[Qgis-user] Spatial Query on Cross Section

[Nicolas Cadieux]

Hi,

I believe Interpolated RST is the interpolated raster file you are 
looking for.  The extract by location will work on vector files.  I 
believe Zonal Statistics or the Point Sampling tool plugin is what you 
are looking for.

Nicolas

On 2019-12-12 3:08 a.m., Dave Gardiner wrote:
> I have used the GRASS plugin v.surf.rst to convert vector contours to what I
> assumed was a DEM raster file. Instead it created a bunch of layers thus:
>
> Slope
> Tangential Curvature
> Quadtree Segmentation
> Mean Curvature
> Aspect
> Deviations
> Interpolated RST
> Profile Curvature
>
> I want to perform a spatial query to extract a subset of data that
> intersects a buffered cross section polygon that traverses the raster
> layers. To do this I am using Processing>Toolbox>Vector Selection>Extract by
> Location. This asks for "Extract Features From" which includes only
> Deviations and Quadtree Segmentation options from the list above. Running a
> query on both these options against the buffered polygon cannot populate any
> data in an output file. What I am hoping to achieve is data to input to the
> qProf plugin which generates height and slope profiles from DEm.
>
> Is there anybody that can help me with this please. Its the Interpolated RST
> layer that holds the elevation information, is that what I need to see in
> the  "Extract Features From" options and if so, how do I get it listed
> there?
>
> Kind Regards
> Dave
>
>
>
> --
> Sent from: http://osgeo-org.1560.x6.nabble.com/QGIS-User-f4125267.html
> _______________________________________________
> Qgis-user mailing list
> Qgis-user at lists.osgeo.org
> List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
> Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user