Re: [Qgis-user] Stream to feature problem

2020-02-28 Thread Micha Silver
On 28/02/2020 2:12, 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.

Re: [Qgis-user] Stream to feature problem

2020-02-28 Thread Håvard Tveite
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

Re: [Qgis-user] Stream to feature problem

2020-02-28 Thread Håvard Tveite
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