CN104375211A - Weather forecast contour map updating method and system - Google Patents
Weather forecast contour map updating method and system Download PDFInfo
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- CN104375211A CN104375211A CN201410323993.6A CN201410323993A CN104375211A CN 104375211 A CN104375211 A CN 104375211A CN 201410323993 A CN201410323993 A CN 201410323993A CN 104375211 A CN104375211 A CN 104375211A
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- 238000000034 method Methods 0.000 title claims abstract description 42
- IYLGZMTXKJYONK-ACLXAEORSA-N (12s,15r)-15-hydroxy-11,16-dioxo-15,20-dihydrosenecionan-12-yl acetate Chemical compound O1C(=O)[C@](CC)(O)C[C@@H](C)[C@](C)(OC(C)=O)C(=O)OCC2=CCN3[C@H]2[C@H]1CC3 IYLGZMTXKJYONK-ACLXAEORSA-N 0.000 claims description 187
- IYLGZMTXKJYONK-UHFFFAOYSA-N ruwenine Natural products O1C(=O)C(CC)(O)CC(C)C(C)(OC(C)=O)C(=O)OCC2=CCN3C2C1CC3 IYLGZMTXKJYONK-UHFFFAOYSA-N 0.000 claims description 186
- 238000001914 filtration Methods 0.000 claims description 45
- 238000012217 deletion Methods 0.000 claims description 9
- 230000037430 deletion Effects 0.000 claims description 9
- 230000000717 retained effect Effects 0.000 claims description 4
- 239000003086 colorant Substances 0.000 abstract 1
- 230000008569 process Effects 0.000 description 10
- 238000010586 diagram Methods 0.000 description 8
- 230000008859 change Effects 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01W—METEOROLOGY
- G01W1/00—Meteorology
- G01W1/10—Devices for predicting weather conditions
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Abstract
The invention belongs to the field of computers and provides a weather forecast contour map updating method and system. The method comprises the following steps that weather numerical forecast data are obtained, and contour lines are drawn according to the weather numerical forecast data; areas defined by the contour lines are filled with colors, and a contour map is generated; a contour map editing command input by a user is received, and the generated contour map is updated according to the contour map editing command. According to the weather forecast contour map updating method and system, the contour map dawn through the weather data generated through numerical weather forecast is updated and corrected, the deviation between the weather information generated according to the numerical weather forecast and actual weather information is lowered, and the generated weather information is made to be closer to the reality.
Description
Technical field
The invention belongs to computer realm, particularly relate to a kind of weather forecast isogram update method and system.
Background technology
Along with the raising of scientific and technological level, China's weather forecast has entered the numerical weather forecast epoch.Numerical weather forecast (Numerical Weather Prediction) refers to according to air actual conditions, under certain initial value and boundary value condition, numerical evaluation is made by mainframe computer, solve the fluid mechanics and thermodynamic (al) system of equations of describing weather modification process, the following certain air motion state of period of prediction and the method for weather phenomenon.This air motion state and weather phenomenon, can represent with isogram.
Isogram is also known as counter map, being represent continuous distribution and a kind of pattern of the quantative attribute gradually changed with the line of equal value point, is represent the profile of subject and the figure of size with curve (i.e. isoline) projection in the plane that the equal each point of numerical value is unified into.
Existing weather forecast, according to the weather data drawing isoline figure that numerical weather prediction model generates, this numerical weather forecast is quantitatively a kind of and objectively forecast, there is relatively large deviation in the weather information that the isogram obtained reflects and Practical Meteorological Requirements information, reduces the accuracy of weather forecast.
Summary of the invention
The embodiment of the present invention provides a kind of weather forecast isogram update method, be intended to solve the weather data generated according to numerical weather forecast, there is relatively large deviation in the weather information that the isogram drawn out reflects and Practical Meteorological Requirements information, reduces the problem of the accuracy of weather forecast.
The embodiment of the present invention is achieved in that a kind of weather forecast isogram update method, and described method comprises the steps:
Obtain meteorological numerical forecasting data, according to described meteorological numerical forecasting Plotting data isoline;
Color filling is carried out to the region that described isoline surrounds, generates isogram;
Receive the isogram edit instruction of user's input, according to described isogram edit instruction, generated isogram is upgraded.
The embodiment of the present invention also provides a kind of weather forecast isogram to upgrade system, and described system comprises:
Isoplethes drawing unit, for obtaining meteorological numerical forecasting data, according to described meteorological numerical forecasting Plotting data isoline;
Isogram generation unit, carries out color filling for the region surrounded described isoline, generates isogram; And
Isogram updating block, for receiving the isogram edit instruction of user's input, upgrades generated isogram according to described isogram edit instruction.
The embodiment of the present invention, the isoline that the weather data generated by logarithm value forecast is drawn, carry out upgrading, revising, reduce the deviation of weather information and the Practical Meteorological Requirements information generated according to numerical weather forecast, and automatic formation zone weather data information, improve the readability of isogram, for weather forecast work brings convenience.
Accompanying drawing explanation
The drafting weather forecast isogram method schematic diagram that Fig. 1 provides for the embodiment of the present invention;
The process flow diagram of the filtration equivalent point that Fig. 2 provides for the embodiment of the present invention;
The process flow diagram of the change equivalent point coordinate that Fig. 3 provides for the embodiment of the present invention;
The process flow diagram of the acquisition isoline that Fig. 4 provides for the embodiment of the present invention;
The process flow diagram of the deletion equivalent point coordinate that Fig. 5 provides for the embodiment of the present invention;
The process flow diagram of the coordinate of all equivalent points on the renewal enclosed region isoline that Fig. 6 provides for the embodiment of the present invention;
The process flow diagram of the deletion isoline that Fig. 7 provides for the embodiment of the present invention;
The process flow diagram in the new isoline region of increase that Fig. 8 provides for the embodiment of the present invention;
The structural drawing of the drafting weather forecast isogram system that Fig. 9 provides for the embodiment of the present invention.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
The embodiment of the present invention, by upgrading the isoline generated according to numerical weather forecast, revising, reduces the deviation of weather information that isoline reflects and Practical Meteorological Requirements information.
In order to technical solutions according to the invention are described, be described below by specific embodiment.
Fig. 1 shows the realization flow of the weather forecast isogram update method that the embodiment of the present invention provides, and details are as follows:
In step S101, obtain meteorological numerical forecasting data, according to meteorological numerical forecasting Plotting data isoline;
In embodiments of the present invention, isoplethes drawing method adopts rectangular node method.
In other embodiments of the invention, isoplethes drawing method can also adopt triangulation.
In step s 102, filter according to the part equivalent point on meteorological numerical forecasting Plotting data isoline, reduce equivalent point quantity;
As one embodiment of the present of invention, in isogram renewal process, need the coordinate changing equivalent point.Because equivalent point quantity is many, change certain equivalent point coordinate, still the not shape of fill area in malleable isogram, therefore need filtration fraction equivalent point.
In step s 103, color filling is carried out in the region that isoline surrounds, and then generates isogram;
As one embodiment of the present of invention, when isoline is closed curve, to the area filling that the equivalent point of this isoline surrounds.
As another embodiment of the present invention, when isoline is non-closed curve, the region of filling is needed to be surrounded by isoline and square boundary.
In embodiments of the present invention, square boundary is in the data of numerical forecasting generation, the region surrounded of maximum longitude, minimum longitude, maximum latitude and minimum latitude.
In embodiments of the present invention, the Fill Color corresponding according to the equivalent point value on isoline, to different isoline regions, fills corresponding color respectively.
In step S104, receive the isogram edit instruction of user's input, according to described isogram edit instruction, generated isogram is upgraded;
In embodiments of the present invention, the step upgraded isogram can be one of following five kinds of steps, or combination in any:
Upgrade equivalent point coordinate, delete equivalent point coordinate, upgrade all equivalent point coordinates on enclosed region isoline, delete isoline, or increase isoline region.
In step S105, according to the isoline after renewal, generate the Word message of isogram and each administrative region weather data.
As one embodiment of the present of invention, calculate the weather data in this region according to the administrative region divided and isogram, as the information such as wind scale of wind-force information.
Circular is: to read in picture all pixels in certain administrative region, mate, output matching result with the color identified in table of grading, and exports this administrative region and have how many kinds of grade, and generates class information.
In embodiments of the present invention, while generating isogram, there is the Word message of each administrative region weather data to export, improve the readability of isogram.
With reference to figure 2, filter the step of the part equivalent point on isoline, specifically comprise following several step:
In step s 201, configuration equivalent point filtration coefficient is variable i, and reads the value in filtration coefficient i;
In embodiments of the present invention, filtration coefficient i can be for user configured systematic parameter, for filtering equivalent points all on isoline, screen.
In step S202, obtain isoline medium value point number, count in m stored in equivalence, and to each equivalent point index one sequence number;
In step S203, judge whether m/i is greater than setting value;
In embodiments of the present invention, can arrange m/i and be greater than 5, isoline after filtration residue is counted and is minimumly had 6.For the starting point of non-closed curve and terminal all on border, these two points are set as filtering, and remain 4 points and can carry out upgrading, revising.
In other embodiments of the present invention, m/i can also be set and be greater than other numerical value, setting can be judged according to the equivalent point number on isoline.
If so, enter in step S204, enable equivalent point filtering function, starting point, terminal and the sequence number retained on isoline is the equivalent point of the multiple of i;
When isoline is non-closed curve, Origin And Destination is different.
When isoline is closed curve, Origin And Destination is identical.
If not, enter in step S205, after the value of filtration coefficient i is subtracted 1, proceed in step S203, continue to perform following steps.
Fig. 3 shows the realization flow of the renewal equivalent point coordinate that the embodiment of the present invention provides, and by upgrading equivalent point coordinate, the isogram realized drawing according to weather data upgrades, and details are as follows:
In step S301, obtain the isoline needing to upgrade;
In step s 302, obtain the initial coordinate of equivalent point, be configured to (x
0, y
0), and along with the change of cursor coordinates, be cursor coordinates by the coordinate real-time update of equivalent point;
When carrying out equivalent point coordinate and changing, when cursor coordinates is identical with the equivalent point coordinate needing to upgrade, now cursor icon becomes hand-type.Then single key command is received, with the change of cursor coordinates, by equivalent point coordinate renew.
In step S303, receive isoline update instruction, the region surrounded by isoline upgrades along with the equivalent point coordinate upgraded;
In step s 304, region is surrounded to the isoline after renewal and carry out color filling.
With reference to figure 4, obtain and need the idiographic flow of the isoline upgraded as follows:
In step S401, read equivalent point on isoline, and record the coordinate of each equivalent point;
In step S402, receive user and choose instruction, and record chooses by described user the point coordinate that instruction chooses, the equivalent point coordinate that the point coordinate chosen according to the point coordinate chosen and distance is nearest, calculate the distance between Two coordinate;
In step S403, judge Two coordinate spacing square value whether within the scope of the value of 100* filtration coefficient i;
If so, enter in step S404, read all equivalent points on isoline belonging to this equivalent point, by all equivalent points on this isoline, be labeled as red panels.
If not, proceed in step S402, continue to perform subsequent step.
In embodiments of the present invention, user chooses equivalent point the mode of mouse can be adopted to double-click.
In other embodiments of the invention, user chooses equivalent point the mode such as keyboard or touch-screen can also be adopted to double-click.
Fig. 5 shows the realization flow of the deletion equivalent point coordinate that the embodiment of the present invention provides, and by deleting equivalent point, the isogram realized drawing according to weather data upgrades, and details are as follows:
In step S501, obtain the isoline needing to upgrade;
In step S502, obtain equivalent point to be deleted sequence number on isoline;
In step S503, delete the equivalent point that this sequence number is corresponding.
Fig. 6 shows the realization flow of the coordinate of all equivalent points on renewal enclosed region isoline that the embodiment of the present invention provides, by upgrading the coordinate of all equivalent points on enclosed region isoline, the isogram realized drawing according to weather data upgrades, and details are as follows:
In step s 601, the isoline needing to upgrade is obtained;
In step S602, receive selected isoline local command, obtain cursor initial coordinate, be configured to (x
0, y
0), the real-time coordinates of record cursor variation, is configured to (x
1, y
1);
In step S603, all equivalent point coordinates on the isoline that reading obtains, add (x by X-axis coordinate corresponding for all equivalent points
1-x
0) value, the Y-axis coordinate that all equivalent points are corresponding adds (y
1-y
0) value, obtain the new coordinate of all equivalent points.
In embodiments of the present invention, (x
0, y
0) be respectively the described X-axis of cursor initial coordinate and the value of Y-axis, (x
1, y
1) be respectively the X-axis of coordinate and the value of Y-axis when described cursor changes.
The overall coordinate of this process implementation to closed contour region changes.
Fig. 7 shows the realization flow of the deletion isoline that the embodiment of the present invention provides, and by deleting isoline, the isogram realized drawing according to weather data upgrades, and details are as follows:
In step s 701, the isoline needing to upgrade is obtained;
In step S702, receive and delete isoline instruction, delete this isoline.
Fig. 8 shows the realization flow in the increase isoline region that the embodiment of the present invention provides, and by increasing new region, the isogram realized drawing according to weather data upgrades.
Because of the isogram that weather data is depicted as, lack a kind of hierarchical region of meteorological element.This meteorological element can be wind-force key element, or rainfall amount key element.Then need the isoline increasing this regional value, the realization flow in increase isoline region provided by the invention, details are as follows:
In step S801, read the number of degrees of meteorological element;
In step S802, increase multiple equivalent points that the level value of meteorological element is corresponding, and mark with red boxes;
In step S803, receive and connect equivalent point instruction, the equivalent point increased is connected and generates new isoline, and search corresponding Fill Color according to level value, Fill Color is filled to the region that new isoline surrounds.
In embodiments of the present invention, more comprehensively provide the more New function to isogram, improve the degree of accuracy of the isogram that weather data is drawn out, and automatically generate the weather data Word message of each administrative region, improve the readability of isogram.
Fig. 9 shows the structure of the drafting weather forecast isogram system that the embodiment of the present invention provides, and for convenience of explanation, illustrate only the part relevant to the embodiment of the present invention.
Weather forecast isogram upgrades system and comprises: isoplethes drawing unit 10, isogram generation unit 30, isogram updating block 40.
Isoplethes drawing unit 10 obtains weather data, according to weather data drawing isoline.
In embodiments of the present invention, isoplethes drawing unit 10 adopts rectangular node method to carry out isoplethes drawing; In other embodiments of the invention, isoplethes drawing unit 10 can also adopt triangulation to carry out isoplethes drawing.
After isoplethes drawing unit 10 has drawn isoline, by boundary scan method, color filling is carried out to the region that isoline surrounds by isogram generation unit 30.
As one embodiment of the present of invention, when isoline is closed curve, to the area filling that the equivalent point of this isoline surrounds.
As another embodiment of the present invention, when isoline is non-closed curve, the region of filling is needed to be surrounded by isoline and square boundary.
In embodiments of the present invention, square boundary is in the data of numerical forecasting generation, the region that maximum longitude, minimum longitude, maximum latitude and minimum latitude surround.
In embodiments of the present invention, the Fill Color corresponding according to the equivalent point value on isoline, to different isoline regions, fills corresponding color respectively.
Isogram updating block 40 upgrades the isogram carrying out color filling.
As one embodiment of the present of invention, weather forecast isogram upgrades system and can also comprise: information generating unit 50.
Information generating unit 50, according to the isoline after renewal, generates the Word message of isogram and each administrative region weather data.
As one embodiment of the present of invention, weather forecast isogram upgrades system and can also comprise: equivalent point filter element 20.
The equivalent point on isoline is filtered by equivalent point filter element 20.
In embodiments of the present invention, equivalent point filter element 20 comprises: filtration coefficient storage unit 201, equivalent point number storage unit 202, equivalent point numbered cell 203, filtration control module 204 and equivalent point filter element 205.
Equivalent point filtration coefficient is configured to variable i by filtration coefficient storage unit 201, and reads the value in filtration coefficient i.Equivalent point number storage unit 202 obtains the number of isoline medium value point, counts in m stored in equivalence.All equivalent points on equivalent point numbered cell 203 pairs of isoline carry out sequence number index.
Filter the value that control module 204 transfers i in filtration coefficient storage unit 201, with the value of m in equivalent point number storage unit 202, detect and judge whether m/i is greater than setting value.
If during m/i> setting value, filter control module 204 output filtering instruction to equivalent point filter element 205, equivalent point filter element 205 starting point, terminal and the equivalent point sequence number retained on isoline is the equivalent point of the multiple of i;
If during m/i<=setting value, described filtration control module 204 sends instruction to filtration coefficient storage unit 201, and the value of i in filtration coefficient storage unit 201 is subtracted 1, is then filtering the value judging m/i in control module 204.
In embodiments of the present invention, can arrange m/i and be greater than 5, isoline after filtration residue is counted and is minimumly had 6.For the starting point of non-closed curve and terminal all on border, these two points are set as filtering, and remain 4 points and can carry out upgrading, revising.
In other embodiments of the present invention, m/i can also be set and be greater than other numerical value, setting can be judged according to the equivalent point number on isoline.
As one embodiment of the present of invention, isoline updating block 40 according to different functional units, can realize the renewal of different modes.The functional unit of isoline updating block 40 comprises one of following, or combination in any:
On equivalent point coordinate renew unit 402, equivalent point coordinate delete cells 403, enclosed region isoline, all equivalent point coordinate renew unit 404, isoline delete cells 405 and isoline region increase unit 406.
As one embodiment of the present of invention, isoline updating block 40 also comprises isoline acquiring unit 401, obtains the isoline needing to upgrade.
Isoline acquiring unit 401 comprises: equivalent point coordinate storage unit 4011, coordinate record unit 4012, metrics calculation unit 4013 and distance detecting unit 4014.
Equivalent point coordinate storage unit 4011 reads each equivalent point coordinate on the isoline needing renewal.Receive user by coordinate record unit 4012 and choose instruction, choose instruction by user and choose equivalent point and the coordinate recording equivalent point.Read by metrics calculation unit 4013 coordinate figure that equivalent point coordinate storage unit 4011 records with coordinate record unit 4012, and calculate the distance that selected point coordinate and distance double-click the nearest equivalent point coordinate of point.Distance is exported to distance detecting unit 4014, judge this distance square value whether within the scope of the value of 100* filtration coefficient i, if within the scope of it, then read and double-click the nearest isoline belonging to equivalent point of point, and by all equivalent points on isoline, and be labeled as red panels.
In embodiments of the present invention, user chooses equivalent point the mode of mouse can be adopted to double-click.
In other embodiments of the invention, user chooses equivalent point the mode such as keyboard or touch-screen can also be adopted to double-click.
As one embodiment of the present of invention, equivalent point coordinate renew unit 402 comprises: coordinate renew unit 4021 and isoline area update unit 4022.
After isoline acquiring unit 401 obtains isoline to be updated, by the selected equivalent point needing to upgrade of coordinate renew unit 4021, and read the initial coordinate of equivalent point, by the initial coordinate of described equivalent point, real-time update is cursor coordinates.
In embodiments of the present invention, when carrying out equivalent point coordinate and changing, when cursor coordinates is identical with the red panels equivalent point needing to upgrade coordinate, now cursor icon becomes hand-type.Then with the change of cursor coordinates, by equivalent point coordinate renew.
Isoline area update unit 4022 according to the equivalent point coordinate after upgrading, the area update that isoline is surrounded, and color filling is carried out to update area.
As another embodiment of the present invention, after isoline acquiring unit 401 obtains isoline to be updated, obtained the equivalent point sequence number on equivalence to be deleted by equivalent point coordinate delete cells 403, and delete equivalent point corresponding to equivalent point sequence number.
As another embodiment of the present invention, after isoline acquiring unit 401 obtains isoline to be updated, upgraded by equivalent point coordinate renew unit 404 pairs of isoline regions all on enclosed region isoline.
Upgrade all equivalent point coordinate unit 404 on enclosed region isoline to comprise: coordinate renew unit 4041 and enclosed region updating block 4042.
Wherein coordinate renew unit 4041 recording light target initial coordinate is (x
0, y
0), with the variation of cursor, recording light target coordinate is (x again
1, y
1).
Enclosed region updating block 4042 reads all equivalent point coordinates on chosen isoline, and X-axis coordinate corresponding for all equivalent points is added (x
1-x
0) value, the Y-axis coordinate that all equivalent points are corresponding adds (y
1-y
0) value, obtain the new coordinate of all equivalent points.
As another embodiment of the present invention, after isoline acquiring unit 401 obtains isoline to be updated, carry out isoline deletion action by deletion isoline unit 405.
Isoline delete cells 405, according to the instruction of deletion isoline, deletes the isoline needing to upgrade.
As another embodiment of the present invention, because of the isogram that weather data is depicted as, lack a kind of hierarchical region of meteorological element.This meteorological element can be wind-force key element, or rainfall amount key element.Isoline region line increase unit 406 is then needed to increase the isoline of this regional value.
Increase isoline region line unit 406 to comprise: meteorological element number of degrees unit 4061, equivalent point increase unit 4062, line unit 4063 and color filling unit 4064.
Wherein, meteorological element number of degrees unit 4061 stores each meteorological element number of degrees information.Equivalent point increases the value that unit 4062 reads meteorological element number of degrees in meteorological element number of degrees unit 4061, and the equivalent point that the value increasing meteorological element number of degrees is corresponding, and identify with red boxes.By line unit 4063, the equivalent point of increase is connected into new isoline, by color filling unit 4064, search corresponding Fill Color according to level value, Fill Color is filled to the region that new isoline surrounds.
In embodiments of the present invention, more comprehensively provide the more New function to isogram, improve the degree of accuracy of the isogram that weather data is drawn out.
As one embodiment of the present of invention, information generating unit 50 calculates the weather data in this region according to the administrative region divided and isogram, as the information such as wind scale of wind-force information, exports weather forecast Word message.
Information generating unit 50 comprises: pixel reading unit 501, pixel reading unit 502 and information output unit 503.
Pixel reading unit 501 to read in contour chart all pixels in a certain administrative region.By color-match unit 502, the pixel of reading is mated with the color identified in table of grading, obtain matching result.By information output unit 503 according to matching result, generate this administrative region level categories, and export the Word message of weather data according to level categories.
The embodiment of the present invention, the isoline that the weather data generated by logarithm value forecast is drawn, upgrade, reduce the deviation of weather information that isoline reflects and Practical Meteorological Requirements information, and automatic formation zone weather data information, improve the readability of isogram, for weather forecast work brings convenience.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (24)
1. a weather forecast isogram update method, is characterized in that, described method comprises the steps:
Obtain meteorological numerical forecasting data, according to described meteorological numerical forecasting Plotting data isoline;
Color filling is carried out to the region that described isoline surrounds, generates isogram;
Receive the isogram edit instruction of user's input, according to described isogram edit instruction, generated isogram is upgraded.
2. weather forecast isogram update method as claimed in claim 1, it is characterized in that, after the described step to upgrading according to the isoline of described meteorological numerical forecasting Plotting data, described method is further comprising the steps of:
According to the isoline after described renewal, generate the Word message of isogram and each administrative region weather data.
3. weather forecast isogram update method as claimed in claim 1 or 2, it is characterized in that, after the described step according to described meteorological numerical forecasting Plotting data isoline, described method is further comprising the steps of:
Filter the equivalent point on described isoline.
4. weather forecast isogram update method as claimed in claim 3, it is characterized in that, the step of the equivalent point on the described isoline of described filtration specifically comprises:
Configuration equivalent point filtration coefficient is variable i, and reads the value in described filtration coefficient i;
Obtain described isoline medium value point number, count in m stored in equivalence;
To all equivalent point index sequence numbers on described isoline;
Judge whether the value of m/i is greater than setting value;
If during m/i> setting value, starting point, terminal and the described equivalent point sequence number retained on isoline is the equivalent point of the multiple of i;
During m/i<=setting value, after the value of described filtration coefficient i is subtracted 1, then carry out judging whether described m/i is greater than setting value;
Wherein, i is the filtration coefficient filtering equivalent point on isoline, and m is the equivalent point number on isoline.
5. weather forecast isogram update method as claimed in claim 1 or 2, is characterized in that, described to carry out step of updating to isogram be one of following steps, or combination in any:
Upgrade equivalent point coordinate;
Delete equivalent point coordinate;
Upgrade all equivalent point coordinates on enclosed region isoline;
Delete isoline;
Increase isoline region.
6. weather forecast isogram update method as claimed in claim 5, it is characterized in that, the step of described renewal equivalent point coordinate is specially:
Obtain the isoline needing to upgrade;
Receive the equivalent point instruction on the selected described isoline needing to upgrade, read the initial coordinate of described equivalent point;
Receive the instruction of equivalent point coordinate renew, by the initial coordinate of described equivalent point, real-time update is cursor coordinates;
Receive isoline update instruction, the region surrounded by described isoline upgrades along with the equivalent point coordinate after described renewal;
Region is surrounded to the isoline after described renewal and carries out color filling.
7. weather forecast isogram update method as claimed in claim 6, is characterized in that, described acquisition needs the step of the isoline upgraded to be specially:
Read each equivalent point coordinate on the described isoline needing to upgrade;
Receive user and choose instruction, and record chooses by described user the point coordinate that instruction chooses;
The equivalent point coordinate that the point coordinate chosen according to the described point coordinate chosen and distance is nearest, calculates the distance between Two coordinate;
Judge that the square value of described distance is whether within the scope of the value of filtration coefficient i described in 100*;
When the square value of described Two coordinate spacing is in described scope, read the isoline belonging to equivalent point that point coordinate that described distance chooses is nearest;
All equivalent points on described isoline are made a mark.
8. weather forecast isogram update method as claimed in claim 5, it is characterized in that, the step of described deletion equivalent point coordinate is specially:
Obtain the isoline needing to upgrade;
Obtain equivalent point to be deleted equivalent point sequence number on isoline;
Delete the equivalent point that described equivalent point sequence number is corresponding.
9. weather forecast isogram update method as claimed in claim 5, it is characterized in that, on described renewal enclosed region isoline, the step of all equivalent point coordinates is specially:
Obtain the isoline needing to upgrade;
Record cursor initial coordinate, is configured to (x
0, y
0), and coordinate when recording cursor variation, be configured to (x
1, y
1);
All equivalent point coordinates on the isoline reading described acquisition, add (x by X-axis coordinate corresponding for described all equivalent points
1-x
0) value, the Y-axis coordinate that described all equivalent points are corresponding adds (y
1-y
0) value, obtain the renewal coordinate of described all equivalent points;
Wherein, (x
0, y
0) be respectively the described X-axis of cursor initial coordinate and the value of Y-axis, (x
1, y
1) be respectively the X-axis of coordinate and the value of Y-axis when described cursor changes.
10. weather forecast isogram update method as claimed in claim 5, it is characterized in that, the step of described deletion isoline is specially:
Obtain the isoline needing to upgrade;
Receive and delete isoline instruction, delete described isoline.
11. weather forecast isogram update methods as claimed in claim 5, is characterized in that, the step in described increase isoline region is specially:
Read the level value of meteorological element;
Increase multiple equivalent points that the level value of described meteorological element is corresponding;
Receive the equivalent point instruction connecting described increase, the equivalent point of described increase is connected and generates new isoline;
Search corresponding Fill Color according to level value, described Fill Color is filled to the region that described new isoline surrounds.
12. weather forecast isogram update methods as claimed in claim 2, is characterized in that, described according to the isoline after described renewal, and the step generating the Word message of isogram and each administrative region weather data is specially:
To read in the isogram of described generation all pixels in an administrative region;
The described pixel read is mated with the color identified in table of grading, output matching result;
According to described matching result, generate the level categories of administrative region;
According to the level categories of described administrative region, export the Word message of described weather data.
13. 1 kinds of weather forecast isograms upgrade system, and it is characterized in that, described system comprises:
Isoplethes drawing unit, for obtaining meteorological numerical forecasting data, according to described meteorological numerical forecasting Plotting data isoline;
Isogram generation unit, carries out color filling for the region surrounded described isoline, generates isogram; And
Isogram updating block, for receiving the isogram edit instruction of user's input, upgrades generated isogram according to described isogram edit instruction.
14. weather forecast isograms as claimed in claim 13 upgrade system, and it is characterized in that, described system also comprises:
Information generating unit, for according to the isoline after described renewal, generates the Word message of isogram and each administrative region weather data.
15. weather forecast isograms as described in claim 13 or 14 upgrade system, and it is characterized in that, described system also comprises: equivalent point filter element, for filtering the equivalent point on described isoline.
16. weather forecast isograms as claimed in claim 15 upgrade system, and it is characterized in that, described equivalent point filter element comprises:
Filtration coefficient storage unit is variable i for configuring equivalent point filtration coefficient, and reads the value in described filtration coefficient i;
Equivalent point number storage unit, for obtaining described isoline medium value point number, counts in m stored in equivalence;
Equivalent point numbered cell, for all equivalent point index sequence numbers on described isoline;
Filter control module, for judging whether the value of m/i is greater than setting value;
If during m/i> setting value, described filtration control module output filtering instruction is to equivalent point filter element, and described equivalent point filter element is the equivalent point of the multiple of i for starting point, terminal and the described equivalent point sequence number retained on isoline;
If during m/i<=setting value, described filtration control module sends to filtration coefficient storage unit and the value of i in filtration coefficient storage unit is subtracted the instruction of 1, then judges whether the value of m/i is greater than described setting value by filtering control module;
Wherein, i is the filtration coefficient filtering equivalent point on isoline, and m is the equivalent point number on isoline.
17. weather forecast isograms as described in claim 13 or 14 upgrade system, it is characterized in that, described isogram updating block comprises one of following, or combination in any:
Equivalent point coordinate renew unit;
Equivalent point coordinate delete cells;
All equivalent point coordinate renew unit on enclosed region isoline;
Isoline delete cells;
Isoline region increases unit.
18. weather forecast isograms as claimed in claim 17 upgrade system, and it is characterized in that, described equivalent point coordinate renew unit comprises:
Isoline acquiring unit, for obtaining the isoline needing to upgrade;
Coordinate renew unit, for the selected equivalent point needing to upgrade, and read the initial coordinate of described equivalent point, by the initial coordinate of described equivalent point, real-time update is cursor coordinates;
Isoline area update unit, for receiving isoline update instruction, the region surrounded by described isoline upgrades along with the equivalent point coordinate after described renewal, and surrounds region to the isoline after described renewal and carry out color filling.
19. weather forecast isograms as claimed in claim 18 upgrade system, and it is characterized in that, described isoline acquiring unit comprises:
Equivalent point coordinate storage unit, reads each equivalent point coordinate on the described isoline needing to upgrade;
Coordinate record unit, receives user and choose instruction, and record chooses by described user the point coordinate that instruction chooses;
Metrics calculation unit, the equivalent point coordinate that the point coordinate for choosing described in the point coordinate chosen described in basis and distance is nearest, calculates the distance between Two coordinate;
Distance detecting unit, for judge described distance square value whether within the scope of the value of filtration coefficient i described in 100* time, read the isoline belonging to equivalent point that point coordinate that described distance chooses is nearest, and all equivalent points on described isoline are made a mark.
20. weather forecast isograms as claimed in claim 17 upgrade system, and it is characterized in that, described equivalent point coordinate delete cells comprises:
Isoline acquiring unit, for obtaining the isoline needing to upgrade;
Equivalent point delete cells, for obtaining the equivalent point sequence number on equivalence to be deleted, and deletes equivalent point corresponding to described equivalent point sequence number.
21. weather forecast isograms as claimed in claim 17 upgrade system, and it is characterized in that, on described renewal enclosed region isoline, all equivalent point coordinate unit comprise:
Isoline acquiring unit, for obtaining the isoline needing to upgrade;
Coordinate renew unit, for recording cursor initial coordinate, is configured to (x
0, y
0), and coordinate when recording cursor variation, be configured to (x
1, y
1);
Enclosed region updating block, on the isoline reading described acquisition, all equivalent point coordinates, add (x by X-axis coordinate corresponding for described all equivalent points
1-x
0) value, the Y-axis coordinate that described all equivalent points are corresponding adds (y
1-y
0) value, obtain the renewal coordinate of described all equivalent points;
Wherein, (x
0, y
0) be respectively the described X-axis of cursor initial coordinate and the value of Y-axis, (x
1, y
1) be respectively the X-axis of coordinate and the value of Y-axis when described cursor changes.
22. weather forecast isograms as claimed in claim 17 upgrade system, and it is characterized in that, described isoline delete cells comprises:
Isoline acquiring unit, for obtaining the isoline needing to upgrade;
Delete cells, deletes isoline instruction for starting, and deletes the described isoline needing to upgrade.
23. weather forecast isograms as claimed in claim 17 upgrade system, it is characterized in that, described isoline region increases unit and comprises:
Meteorological element number of degrees unit, for storing each meteorological element number of degrees information;
Equivalent point increases unit, for reading the level value of described meteorological element, and the equivalent point that the level value increasing described meteorological element is corresponding;
Line unit, for receiving the equivalent point instruction connecting described increase, connecting the equivalent point of described increase and generating new isoline;
Color filling unit, for searching corresponding Fill Color according to level value, is filled to the region that described new isoline surrounds by described Fill Color.
24. weather forecast isograms as claimed in claim 14 upgrade system, and it is characterized in that, described information generating unit comprises:
Pixel reading unit, for read described generation isogram in all pixels in an administrative region;
Color-match unit, for the described pixel read is mated with the color identified in table of grading, output matching result;
Information output unit, for according to described matching result, generates the level categories of administrative region, and exports the Word message of weather data according to described level categories.
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