Loading CSV data table as Vector layer using PyQGIS

Question

This might be a simple problem, but how does one load a simple two-column CSV with no associated geometric data?

I have given a couple of go's via QgsVectorlayer[delimited text, spatialite] types - but none seem to work.

for example:

theMinistryOf = ':\...\sillyWalks.csv'
uri = QgsDataSourceURI()
uri.setDatabase(theMinistryOf)
uri.setDataSource('','','')
notQuiteSillyEnough = QgsVectorLayer(uri.uri(), 'skip_step_slide', 'spatialite')

or:

uri = theMinistryOf+'?delimiter=%s' % (",")
sillyWalks = QgsVectorLayer(uri, 'sillyWalks', "delimitedtext")
QgsMapLayerRegistry.instance().addMapLayer(sillyWalks)

This need is easily fulfilled manually by selecting the load vector layer, but programmatically?

Can a CSV data table be loaded via PyQGIS without geometry?

Answer 1

The following snippet works for me:

uri = "file:///C:/testdata/somecsv.csv?delimiter=%s" % (";")
lyr = QgsVectorLayer(uri, 'New CSV','delimitedtext')
QgsMapLayerRegistry.instance().addMapLayer(lyr)

For reference, if you wanted to add it with geometry:

uri = "file:///C:/testdata/somecsv.csv?delimiter=%s&crs=epsg:4326&xField=%s&yField=%s" % (";", "x", "y")
lyr = QgsVectorLayer(uri, 'New CSV','delimitedtext')
QgsMapLayerRegistry.instance().addMapLayer(lyr)

Most importantly, make sure the correct delimiter has been specified!

• Katalpa: I have to give you points for posting so quick with responses which indeed work. But I have figured out another solution - also posed for others references.

Answer 2

Should not have supposed that 'ogr' wouldn't be able.

someTableLayer = QgsVectorLayer(ministryOf.csv, 'sillyWalks', 'ogr')
QgsMapLayerRegistry.instance().addMapLayer(someTableLayer)