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I want to create a vector layer in the this CRS : USER:100001 but i doesn't work. It always tells me, i need to choose the CRS by myself.

vl = QgsVectorLayer("Point?crs=user:100001", "Project_center", "memory")

But when i try it with ESPG:4326, it works as expected. Can anyone help me?

  • Are you sure that the crs USER:100001 already exists? What QGIS-version? – Mike May 13 '18 at 15:46
  • Yes, it is. QGIS 2.18 – hano hano May 13 '18 at 19:09
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I think your code vl = QgsVectorLayer("Point?crs=user:100001", "Project_center", "memory") only works from QGIS3.0. For 2.xx you can test the following:

from PyQt4.QtCore import QSettings

# save actualy value
crsType = QSettings().value('/Projections/defaultBehaviour') # only 2.x

QSettings().setValue('/Projections/defaultBehaviour','')
target_crs = QgsCoordinateReferenceSystem()
target_crs.createFromId(100001, QgsCoordinateReferenceSystem.InternalCrsId)

vl = QgsVectorLayer("Point", "Project_center", "memory")
vl.setCrs(target_crs)
print vl.crs().authid()

# set saved  value
QSettings().setValue('/Projections/defaultBehaviour',crsType) 

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