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I'm trying to create new vector layer based on existing. Suddenly long attribute names are truncated. Here is my code:

@staticmethod
def CreateNewEmptyLayer(sourceLayer, newLayerFileName):
    provider = sourceLayer.dataProvider()
    writer = QgsVectorFileWriter(newLayerFileName,provider.encoding(), provider.fields(), sourceLayer.wkbType(), provider.crs(),"ESRI Shapefile")
    if writer.hasError() != QgsVectorFileWriter.NoError:
        print("Error when creating shapefile: ", writer.errorMessage())
        return False;

    del writer;
    return True;

Source layer is MapInfo TAB file.


Added code to print info for source layers:

for field in provider.fields():
        print field.name(), field.typeName()

and result is ->source layer atrtribute names are NOT truncated to 11 symbols. So interesting is why QgsVectorFileWriter is truncating them?

  • 2
    Please edit the question to specify the source datatype. If it isn't shapefile, then attribute name truncation for names beyond the dBase limit of 11 characters (bytes) would be expected. – Vince Nov 28 '17 at 13:08
2

It is a limitation with dbase the .dbf file type of a shapefile. It does not support field names greater than 10 characters.

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