Mercurial > dive4elements > river

annotate flys-backend/contrib/shpimporter/importer.py @ 3654:59ca5dab2782

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Shape importer: use python's OptionParse to read user specific configuration from command line. flys-backend/trunk@5231 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Ingo Weinzierl <ingo.weinzierl@intevation.de>
date Wed, 22 Aug 2012 11:55:55 +0000
parents 998f1a7dcfde
children 8654e4480fc6
rev   line source
2861
b0132e1b9719 Added further shape importers and added the option to reproject shapes during the import process.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 2853
diff changeset
1 import ogr, osr
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bd9e76e0b55d Improved the python shapefile importer.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
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2
bd9e76e0b55d Improved the python shapefile importer.
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3 class Importer:
bd9e76e0b55d Improved the python shapefile importer.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
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4
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59ca5dab2782 Shape importer: use python's OptionParse to read user specific configuration from command line.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 2862
diff changeset
5 def __init__(self, config):
59ca5dab2782 Shape importer: use python's OptionParse to read user specific configuration from command line.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 2862
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6 self.config = config
59ca5dab2782 Shape importer: use python's OptionParse to read user specific configuration from command line.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 2862
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7 self.dbconn = 'OCI:%s/%s@%s' % (config.user, config.password, config.host)
59ca5dab2782 Shape importer: use python's OptionParse to read user specific configuration from command line.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 2862
diff changeset
8 self.river_id = config.river_id
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b0132e1b9719 Added further shape importers and added the option to reproject shapes during the import process.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 2853
diff changeset
9 self.dest_srs = osr.SpatialReference()
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59ca5dab2782 Shape importer: use python's OptionParse to read user specific configuration from command line.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 2862
diff changeset
10 self.dest_srs.ImportFromEPSG(config.target_srs)
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bd9e76e0b55d Improved the python shapefile importer.
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11
bd9e76e0b55d Improved the python shapefile importer.
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12
bd9e76e0b55d Improved the python shapefile importer.
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13 def getKind(self, path):
bd9e76e0b55d Improved the python shapefile importer.
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14 raise NotImplementedError("Importer.getKind is abstract!")
bd9e76e0b55d Improved the python shapefile importer.
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15
bd9e76e0b55d Improved the python shapefile importer.
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16
bd9e76e0b55d Improved the python shapefile importer.
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17 def getPath(self, base):
bd9e76e0b55d Improved the python shapefile importer.
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18 raise NotImplementedError("Importer.getPath is abstract!")
bd9e76e0b55d Improved the python shapefile importer.
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parents:
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19
bd9e76e0b55d Improved the python shapefile importer.
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20
bd9e76e0b55d Improved the python shapefile importer.
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21 def getTablename(self):
bd9e76e0b55d Improved the python shapefile importer.
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22 raise NotImplementedError("Importer.getTablename is abstract!")
bd9e76e0b55d Improved the python shapefile importer.
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23
bd9e76e0b55d Improved the python shapefile importer.
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24
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parents: 2862
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25 def getName(self):
59ca5dab2782 Shape importer: use python's OptionParse to read user specific configuration from command line.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 2862
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26 raise NotImplementedError("Importer.getTablename is abstract!")
59ca5dab2782 Shape importer: use python's OptionParse to read user specific configuration from command line.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 2862
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27
59ca5dab2782 Shape importer: use python's OptionParse to read user specific configuration from command line.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 2862
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28
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bd9e76e0b55d Improved the python shapefile importer.
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29 def IsFieldSet(self, feat, name):
bd9e76e0b55d Improved the python shapefile importer.
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30 try:
bd9e76e0b55d Improved the python shapefile importer.
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31 isset = feat.GetField(name)
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32 return isset is not None
bd9e76e0b55d Improved the python shapefile importer.
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33 except:
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34 return False
bd9e76e0b55d Improved the python shapefile importer.
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35
bd9e76e0b55d Improved the python shapefile importer.
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36
bd9e76e0b55d Improved the python shapefile importer.
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37 def IsDoubleFieldSet(self, feat, name):
bd9e76e0b55d Improved the python shapefile importer.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
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38 try:
bd9e76e0b55d Improved the python shapefile importer.
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39 isset = feat.GetFieldAsDouble(name)
bd9e76e0b55d Improved the python shapefile importer.
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40 return isset is not None
bd9e76e0b55d Improved the python shapefile importer.
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41 except:
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42 return False
bd9e76e0b55d Improved the python shapefile importer.
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43
bd9e76e0b55d Improved the python shapefile importer.
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44
bd9e76e0b55d Improved the python shapefile importer.
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45 def isShapeRelevant(self, name, path):
bd9e76e0b55d Improved the python shapefile importer.
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46 return True
bd9e76e0b55d Improved the python shapefile importer.
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47
bd9e76e0b55d Improved the python shapefile importer.
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48
bd9e76e0b55d Improved the python shapefile importer.
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49 def walkOverShapes(self, shape):
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998f1a7dcfde New shape importers and schema modifications.
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parents: 2861
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50 print "---"
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bd9e76e0b55d Improved the python shapefile importer.
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51 (name, path) = shape
bd9e76e0b55d Improved the python shapefile importer.
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52 if not self.isShapeRelevant(name, path):
bd9e76e0b55d Improved the python shapefile importer.
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53 print "Skip shapefile '%s'" % name
bd9e76e0b55d Improved the python shapefile importer.
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54 return
bd9e76e0b55d Improved the python shapefile importer.
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55
bd9e76e0b55d Improved the python shapefile importer.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
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56 shp = ogr.Open(shape[1])
bd9e76e0b55d Improved the python shapefile importer.
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57 if shp is None:
bd9e76e0b55d Improved the python shapefile importer.
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58 print "Shapefile '%s' could not be opened!" % path
bd9e76e0b55d Improved the python shapefile importer.
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59 return
bd9e76e0b55d Improved the python shapefile importer.
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60
bd9e76e0b55d Improved the python shapefile importer.
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61 print "Opened shapefile '%s'" % path
bd9e76e0b55d Improved the python shapefile importer.
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62 srcLayer = shp.GetLayerByName(name)
bd9e76e0b55d Improved the python shapefile importer.
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63
bd9e76e0b55d Improved the python shapefile importer.
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64 if srcLayer is None:
bd9e76e0b55d Improved the python shapefile importer.
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65 print "Layer '%s' was not found!" % name
bd9e76e0b55d Improved the python shapefile importer.
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66 return
bd9e76e0b55d Improved the python shapefile importer.
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67
bd9e76e0b55d Improved the python shapefile importer.
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68 return self.shape2Database(srcLayer, name, path)
bd9e76e0b55d Improved the python shapefile importer.
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69
bd9e76e0b55d Improved the python shapefile importer.
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70
2861
b0132e1b9719 Added further shape importers and added the option to reproject shapes during the import process.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 2853
diff changeset
71 def transform(self, feat):
b0132e1b9719 Added further shape importers and added the option to reproject shapes during the import process.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 2853
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72 geometry = feat.GetGeometryRef()
b0132e1b9719 Added further shape importers and added the option to reproject shapes during the import process.
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parents: 2853
diff changeset
73 src_srs = geometry.GetSpatialReference()
b0132e1b9719 Added further shape importers and added the option to reproject shapes during the import process.
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parents: 2853
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74
b0132e1b9719 Added further shape importers and added the option to reproject shapes during the import process.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 2853
diff changeset
75 if src_srs is None:
b0132e1b9719 Added further shape importers and added the option to reproject shapes during the import process.
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parents: 2853
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76 print "Error: No source SRS given! No transformation possible!"
b0132e1b9719 Added further shape importers and added the option to reproject shapes during the import process.
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parents: 2853
diff changeset
77 return feat
b0132e1b9719 Added further shape importers and added the option to reproject shapes during the import process.
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parents: 2853
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78
b0132e1b9719 Added further shape importers and added the option to reproject shapes during the import process.
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parents: 2853
diff changeset
79 transformer = osr.CoordinateTransformation(src_srs, self.dest_srs)
b0132e1b9719 Added further shape importers and added the option to reproject shapes during the import process.
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parents: 2853
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80 geometry.Transform(transformer)
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parents: 2853
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81
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parents: 2853
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82 return feat
b0132e1b9719 Added further shape importers and added the option to reproject shapes during the import process.
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parents: 2853
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83
b0132e1b9719 Added further shape importers and added the option to reproject shapes during the import process.
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parents: 2853
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84
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parents:
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85 def shape2Database(self, srcLayer, name, path):
bd9e76e0b55d Improved the python shapefile importer.
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parents:
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86 table = ogr.Open(self.dbconn)
bd9e76e0b55d Improved the python shapefile importer.
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parents:
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87 destLayer = table.GetLayerByName(self.getTablename())
bd9e76e0b55d Improved the python shapefile importer.
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88
bd9e76e0b55d Improved the python shapefile importer.
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89 if srcLayer is None:
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90 print "Shapefile is None!"
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91 return -1
bd9e76e0b55d Improved the python shapefile importer.
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92
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93 if destLayer is None:
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94 print "No destination layer given!"
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95 return -1
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96
bd9e76e0b55d Improved the python shapefile importer.
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97 count = srcLayer.GetFeatureCount()
bd9e76e0b55d Improved the python shapefile importer.
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parents:
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98 print "Try to add %i features to database." % count
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99
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100 srcLayer.ResetReading()
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101
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102 geomType = -1
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103 success = 0
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104 unsupported = 0
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b0132e1b9719 Added further shape importers and added the option to reproject shapes during the import process.
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parents: 2853
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105 creationFailed = 0
2853
bd9e76e0b55d Improved the python shapefile importer.
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106 featureDef = destLayer.GetLayerDefn()
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107
bd9e76e0b55d Improved the python shapefile importer.
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108 for feat in srcLayer:
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109 geom = feat.GetGeometryRef()
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parents: 2853
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110
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parents: 2853
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111 if geom is None:
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parents: 2853
diff changeset
112 continue
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parents: 2853
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113
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114 geomType = geom.GetGeometryType()
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115
bd9e76e0b55d Improved the python shapefile importer.
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116 if self.isGeometryValid(geomType):
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parents:
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117 newFeat = self.createNewFeature(featureDef,
bd9e76e0b55d Improved the python shapefile importer.
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118 feat,
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119 name=name,
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120 path=path)
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121
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122 if newFeat is not None:
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parents: 2853
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123 newFeat = self.transform(newFeat)
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124 res = destLayer.CreateFeature(newFeat)
bd9e76e0b55d Improved the python shapefile importer.
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parents:
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125 if res is None or res > 0:
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parents:
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126 print "Error while inserting feature: %r" % res
bd9e76e0b55d Improved the python shapefile importer.
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127 else:
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128 success = success + 1
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parents: 2853
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129 else:
b0132e1b9719 Added further shape importers and added the option to reproject shapes during the import process.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 2853
diff changeset
130 creationFailed = creationFailed + 1
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parents:
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131 else:
bd9e76e0b55d Improved the python shapefile importer.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
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132 unsupported = unsupported + 1
bd9e76e0b55d Improved the python shapefile importer.
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parents:
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133
bd9e76e0b55d Improved the python shapefile importer.
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parents:
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134 print "Inserted %i features" % success
2861
b0132e1b9719 Added further shape importers and added the option to reproject shapes during the import process.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 2853
diff changeset
135 print "Failed to create %i features" % creationFailed
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bd9e76e0b55d Improved the python shapefile importer.
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parents:
diff changeset
136 print "Found %i unsupported features" % unsupported
bd9e76e0b55d Improved the python shapefile importer.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
137
bd9e76e0b55d Improved the python shapefile importer.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
138 try:
bd9e76e0b55d Improved the python shapefile importer.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
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139 destLayer.CommitTransaction()
bd9e76e0b55d Improved the python shapefile importer.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
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140 except e:
bd9e76e0b55d Improved the python shapefile importer.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
141 print "Exception while committing transaction."
bd9e76e0b55d Improved the python shapefile importer.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
142
bd9e76e0b55d Improved the python shapefile importer.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
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143 return geomType
bd9e76e0b55d Improved the python shapefile importer.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
144
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