OGR1.6 above python2.4 above 只需要定義fields,roads數(shù)據(jù)調(diào)用serial_shpdata_road()即可一次輸出到shp文件 不適合大批量坐標(biāo)一次生成shp ogr的問題在于python代碼中初始化layer之后傳遞到其他函數(shù)使用將會導(dǎo)致莫名錯誤，應(yīng)該是個bug 1 #bin.zhang@sw2us.com 2 fields=[
3 {'name':'roadname','type':FIELD_STRING,'width':30}
4 ]
5 roads=[
6 {
7 'geom':[(121.1,31.1),(121.101,31.102),(121.101,31.2)],
8 'attrs':('xscott.test',)
9 }
10 ]
11 serial_shpdata_road('d:/temp3/aa.shp',fields,roads)
12 '''
13 def serial_shpdata_road(file,fields,roads):
14 '''
15 fields: [{name,type,width}, ]
16 roads - [{'geom':[(x,y),..],'wkt':'','attrs':[name,type,len,]},..]
17 '''
18 layer = None
19
20 if os.path.exists(file):
21 os.remove(file)
22
23 makePrjFile(file)
24 ds = driver.CreateDataSource(file)
25 layer = ds.CreateLayer("road",geom_type=ogr.wkbMultiLineString)
26 for f in fields:
27 fld = ogr.FieldDefn(f['name'],f['type'])
28
29 if f['type'] == FIELD_STRING :
30 w = 30
31 if f.has_key('width'):
32 w = f['width']
33 fld.SetWidth(w)
34 layer.CreateField(fld)
35 ftrdfn = layer.GetLayerDefn()
36
37 for r in roads:
38 g = None
39 if r.has_key('wkt'):
40 g = ogr.CreateGeometryFromWkt(r['wkt'])
41 if r.has_key('geom'):
42 pts = r['geom']
43 pts = map(lambda pt: '%s %s'%(pt[0],pt[1]),pts)
44 txt = string.join(pts,',')
45 wkt = "MULTILINESTRING((%s))"%txt
46 g = ogr.CreateGeometryFromWkt(wkt)
47
48 ftr = ogr.Feature(ftrdfn)
49 ftr.SetGeometry(g)
50 for n in range(len(r['attrs'])):
51 at = r['attrs'][n]
52 ftr.SetField(n,at)
53 layer.CreateFeature(ftr)
54 layer.SyncToDisk()
55
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