MeteoInfo脚本教程（五）：标注

MeteoInfo

MeteoInfo是一个GIS软件，矢量图层不仅有图形信息还有属性信息，这些属性信息可以很方便地标注在地图上，增加地图的可读性。气象上最常用的站点的标注，这里给出一个Demo脚本程序将中国省会城市名标注出来。正确运行此脚本需要下载最新的MeteoInfo Java 1.1.7R1版本，主要是为了Jython对中文的支持，详细信息见此贴：http://bbs.06climate.com/forum.php?mod=viewthread&tid=30872&extra=page%3D1。

矢量图层（VectorLayer）有一个属性是LabelSet类，里面有各类标注的设置参数，主要设置要标注的属性字段、字体、颜色、偏移等信息。

为了在脚本编辑器中正确显示中文，需要将其字体设置为中文字体，通过脚本编辑器窗体的“Options -> Set Font”菜单可以设置字体。脚本程序如下：

1. # coding=utf-8#-----------------------------------------------------
   
2. # Author: Yaqiang Wang
   
3. # Date: 2014-11-26
   
4. # Purpose: Label the point layer
   
5. # Note: Sample
   
6. #-----------------------------------------------------
   
7. #---- Import classes
   
8. print 'Import classes...'
   
9. from org.meteoinfo.layout import MapLayout
   
10. from org.meteoinfo.data.mapdata import MapDataManage
    
11. from org.meteoinfo.global import Extent
    
12. import os.path
    
13. from java.awt import Color
    
14. from java.awt import Font
    
15. from java.awt import GraphicsEnvironment
    
16. from javax.swing import JFrame
    
17. 
    
18. #---- Set directories
    
19. print 'Set directories...'
    
20. baseDir = 'D:/MyProgram/Distribution/java/MeteoInfo/MeteoInfo'
    
21. mapDir = os.path.join(baseDir, 'map')
    
22. 
    
23. #---- Create MapLayout object
    
24. mapLayout = MapLayout()
    
25. mapFrame = mapLayout.getActiveMapFrame()
    
26. 
    
27. #---- Load layers
    
28. print 'Load country layer...'
    
29. fn = os.path.join(mapDir, 'country1.shp')
    
30. countryLayer = MapDataManage.loadLayer(fn)
    
31. lb = countryLayer.getLegendScheme().getLegendBreaks().get(0)
    
32. lb.setDrawFill(False)
    
33. lb.setOutlineColor(Color.black)
    
34. mapFrame.addLayer(countryLayer)
    
35. 
    
36. print 'Load river layer...'
    
37. fn = os.path.join(mapDir, 'rivers.shp')
    
38. riverLayer = MapDataManage.loadLayer(fn)
    
39. lb = riverLayer.getLegendScheme().getLegendBreaks().get(0)
    
40. lb.setColor(Color.blue)
    
41. lb.setSize(1.5)
    
42. mapFrame.addLayer(riverLayer)
    
43. 
    
44. print 'Load city layer...'
    
45. cityLayer = MapDataManage.loadLayer(os.path.join(mapDir, 'res1_4m.shp'))
    
46. lb = cityLayer.getLegendScheme().getLegendBreaks().get(0)
    
47. lb.setSize(6)
    
48. lb.setColor(Color.red)
    
49. labset = cityLayer.getLabelSet()
    
50. labset.setFieldName('NAME')
    
51. font = Font(u'楷体', Font.PLAIN, 16)
    
52. labset.setLabelFont(font)
    
53. labset.setYOffset(15)
    
54. cityLayer.addLabels()
    
55. mapFrame.addLayer(cityLayer)
    
56. 
    
57. #---- Add title
    
58. title = mapLayout.addText('MeteoInfo' + u'脚本示例', 350, 30, u'黑体', 16)
    
59. 
    
60. #---- Zoom layout map
    
61. print 'Zoom layout map...'
    
62. mapLayout.getActiveLayoutMap().zoomToExtentLonLatEx(Extent(70, 140, 15, 55))
    
63. 
    
64. #---- Set mapframe
    
65. mapFrame.setGridXDelt(10)
    
66. mapFrame.setGridYDelt(10)
    
67. mapLayout.paintGraphics()
    
68. 
    
69. frame = JFrame('MeteoInfo Script Sample', size = (800, 600))
    
70. frame.add(mapLayout)
    
71. frame.visible = True
    
72. print 'Finished!'

# coding=utf-8#-----------------------------------------------------<br /> # Author: Yaqiang Wang<br /> # Date: 2014-11-26<br /> # Purpose: Label the point layer<br /> # Note: Sample<br /> #-----------------------------------------------------<br /> #---- Import classes<br /> print 'Import classes...'<br /> from org.meteoinfo.layout import MapLayout<br /> from org.meteoinfo.data.mapdata import MapDataManage<br /> from org.meteoinfo.global import Extent<br /> import os.path<br /> from java.awt import Color<br /> from java.awt import Font<br /> from java.awt import GraphicsEnvironment<br /> from javax.swing import JFrame<br /> <br /> #---- Set directories<br /> print 'Set directories...'<br /> baseDir = 'D:/MyProgram/Distribution/java/MeteoInfo/MeteoInfo'<br /> mapDir = os.path.join(baseDir, 'map')<br /> <br /> #---- Create MapLayout object<br /> mapLayout = MapLayout()<br /> mapFrame = mapLayout.getActiveMapFrame()<br /> <br /> #---- Load layers<br /> print 'Load country layer...'<br /> fn = os.path.join(mapDir, 'country1.shp')<br /> countryLayer = MapDataManage.loadLayer(fn)<br /> lb = countryLayer.getLegendScheme().getLegendBreaks().get(0)<br /> lb.setDrawFill(False)<br /> lb.setOutlineColor(Color.black)<br /> mapFrame.addLayer(countryLayer)<br /> <br /> print 'Load river layer...'<br /> fn = os.path.join(mapDir, 'rivers.shp')<br /> riverLayer = MapDataManage.loadLayer(fn)<br /> lb = riverLayer.getLegendScheme().getLegendBreaks().get(0)<br /> lb.setColor(Color.blue)<br /> lb.setSize(1.5)<br /> mapFrame.addLayer(riverLayer)<br /> <br /> print 'Load city layer...'<br /> cityLayer = MapDataManage.loadLayer(os.path.join(mapDir, 'res1_4m.shp'))<br /> lb = cityLayer.getLegendScheme().getLegendBreaks().get(0)<br /> lb.setSize(6)<br /> lb.setColor(Color.red)<br /> labset = cityLayer.getLabelSet()<br /> labset.setFieldName('NAME')<br /> font = Font(u'楷体', Font.PLAIN, 16)<br /> labset.setLabelFont(font)<br /> labset.setYOffset(15)<br /> cityLayer.addLabels()<br /> mapFrame.addLayer(cityLayer)<br /> <br /> #---- Add title<br /> title = mapLayout.addText('MeteoInfo' + u'脚本示例', 350, 30, u'黑体', 16)<br /> <br /> #---- Zoom layout map<br /> print 'Zoom layout map...'<br /> mapLayout.getActiveLayoutMap().zoomToExtentLonLatEx(Extent(70, 140, 15, 55))<br /> <br /> #---- Set mapframe<br /> mapFrame.setGridXDelt(10)<br /> mapFrame.setGridYDelt(10)<br /> mapLayout.paintGraphics()<br /> <br /> frame = JFrame('MeteoInfo Script Sample', size = (800, 600))<br /> frame.add(mapLayout)<br /> frame.visible = True<br /> print 'Finished!'

运行结果如下：

rceclx

继续跟，学习

当未来

王老师，我运行这个脚本显示“  File "<string>", line None  SyntaxError: Non-ASCII character in file '<iostream>', but no encoding declared; see http://www.python.org/peps/pep-0263.html for details”
我只改了路径，别的没动——MI版本1.2.8R9
不知道这是什么原因

MeteoInfo

当未来 发表于 2015-10-24 17:52
王老师，我运行这个脚本显示“  File "", line None  SyntaxError: Non-ASCII character in file '', but n ...

在Python程序里用到非ASCII字符时需要声明编码，所以下面这一行不能去掉。
# coding=utf-8

当未来

MeteoInfo 发表于 2015-10-24 23:56
在Python程序里用到非ASCII字符时需要声明编码，所以下面这一行不能去掉。
# coding=utf-8

好了，多谢王老师

sxnsq8888

感谢楼主分享

正能量