[Qgis-user] QGis/Grass - slow Vector export

[Saber Razmjooei]

Save as... is extremely fast compared with v.out.ogr

On Mon, 2011-03-21 at 18:16 +0100, Paolo Cavallini wrote:
> Il giorno lun, 21/03/2011 alle 11.33 +0100, Thomas Wahlmüller ha
> scritto:
> 
> > I am exporting vector features with v.out.ogr. I tried with QGIS via
> > Plugin and with GRASS. My Dataset is a point-feature with more than 1
> > million points with height attribute.
> > 
> > Exporting to shape is realy slow - 1 day ~ 30% exported
> > 
> > I also tried to export with v.out.ascii. In this case export also slow
> > with output of heigt-attribute. Output was fast without attribute
> > information. So it seems to me - accessing attribute data in grass slows
> > down the process...
> 
> Have you tried by simply "Save as.."?
> 
> > By the way: I needed to convert a Raster to Point, because I had
> > Artefacts (stripes of lower height-value) after reprojection with GDAL.
> > Are there any other solutions?
> 
> r.resamp?
> 
> All the best.