Hi Azzurra,
Are you sure that you aren't using Offset Curve (ST_OffsetCurve) operation,
instead of Singe Side Buffer (ST_SingleSidedBuffer) operation?
By the way, Offset Curve operation is broken in QGIS 2.18.x. If you want,
you can overwrite
../python/plugins/processing/algs/gdal/ogr2ogronesideb
Thanks Nyall.
I dont know why but GDAL SINGLE SIDED BUFFER it doesnt work really well.
The result of this buffer is a line and not a polygone (the line is the
same of the input file!!)
I just put my input file and 150 m for the distance buffer for the left
side.
Thanks,
A.L.
2016-12-19 20:19