Re: [Qgis-user] What is the best way to do a simple watershed analysis on a raster grid?

2013-11-24 Thread Alexander Bruy
Hi Rob, you can try to do this with Processing framework. There is at least three different providers that have watershed analysis tools: GRASS, SAGA and TauDEM 2013/11/24 Rob Stewart : > Hi, > What's the best way to do a simple watershed analysis on a raster grid? I'm > wanting to generate rain

[Qgis-user] newbie Q on applying polygon characteristics to intersecting polygons

2013-11-24 Thread Neal Traven
Greetings, QGISers! I don't know whether my subject header really describes what I want to do (that's how much of a newbie I am). But let me try. I have two polygon SHP layers that cover the same total area. Polygons in the "voting unit" layer are smaller than those in the "census tract" lay

Re: [Qgis-user] Issues using Points in polygon with PostGIS layer

2013-11-24 Thread Lee Hachadoorian
On 11/24/2013 04:17 PM, Richard Duivenvoorde wrote: On 24-11-13 21:30, Lee Hachadoorian wrote: I was using `Vector → Analysis Tools → Points in polygon` to count events in a hexgrid (created with MMQGIS). The point data came from a PostGIS layer. The layer has a query restriction and the filter

Re: [Qgis-user] Issues using Points in polygon with PostGIS layer

2013-11-24 Thread Richard Duivenvoorde
On 24-11-13 21:30, Lee Hachadoorian wrote: > I was using `Vector → Analysis Tools → Points in polygon` to count > events in a hexgrid (created with MMQGIS). The point data came from a > PostGIS layer. The layer has a query restriction and the filtered data > set has ~230k points. When I run it, it

[Qgis-user] Issues using Points in polygon with PostGIS layer

2013-11-24 Thread Lee Hachadoorian
I was using `Vector → Analysis Tools → Points in polygon` to count events in a hexgrid (created with MMQGIS). The point data came from a PostGIS layer. The layer has a query restriction and the filtered data set has ~230k points. When I run it, it just crashes (sometimes immediately, sometimes

Re: [Qgis-user] MrSID raster and QGIS in linux

2013-11-24 Thread Eric Goddard
It isn't strictly true that you're crap out of luck--you just have to download the mrsid API and register it with ldconfig. Depending on your system, sometimes there are gdal plugins that you can then install. This is how it is setup on Debian based systems. If there isn't a plugin available, then

Re: [Qgis-user] MrSID raster and QGIS in linux

2013-11-24 Thread Randal Hale
There isn't - Mr Sid and ECW are proprietary image formats. If you are on a windows machine they get a separate library/file/gdal type plugin and if you are on a linux machine your just crap outta luck. I've actually been playing around with building sid support into gdal (which is another long

[Qgis-user] MrSID raster and QGIS in linux

2013-11-24 Thread john polo
Hello, I am using Fedora 19 on a 32 bit machine. I had installed QGIS 1.8 and the GDAL packages, but was not able to use .sid rasters from the geospatial gateway that the feds run. I was getting an error message saying that it was not a supported raster source when I tried to load the file. Is

[Qgis-user] What is the best way to do a simple watershed analysis on a raster grid?

2013-11-24 Thread Rob Stewart
Hi, What's the best way to do a simple watershed analysis on a raster grid? I'm wanting to generate rainfall/runoff sub-catchment polygons. Rob ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user

Re: [Qgis-user] Qgis/Postgis : impossible to open a project

2013-11-24 Thread Micha Silver
On 22/11/2013 18:48, image wrote: @ Alex: Thank you for your help. I succeed in loading without any problem my qgis project through qgis from my station hosting the postgrsql server. But, as you say, i can't do it from another station. From other station, the error mess