Sorry, this message got messed up - trying again... Hi Ming,
There is a place where your raster "line" is two pixels wide, and this is also where the "errors" occurs. I guess that the raster "line" needs to be properly thinned (to a one pixel wide skeleton) before running this algorithm. Håvard On 28.02.2020 09:09, Håvard Tveite wrote: > Hi Ming, > > The errors occur where raster "line" is two pixels wide, and > that is also where you find the "errors". > (to a one pixel wide skeleton) before running this algorithm. > > Håvard > > On 28.02.2020 01:13, ming han wrote: >> Hi all >> Is qgis has a function like "stream link" in Arcgis which can >> convert the stream raster to feature. >> I tried with raster to vector function in grass and qgis. it has >> following errors. >> >> Cheers >> Ming >> >> image.png > _______________________________________________ Qgis-user mailing list Qgis-user@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user