http://www.amanita-photolibrary.co.uk/Untitled-2.png humm, there does not seem to be any data there
-----Original Message----- From: Micha Silver [mailto:[email protected]] Sent: 15 April 2010 12:05 To: M.E.Dodd Cc: '[email protected]' Subject: Re: [Qgis-user] averaging raster grid What I was hoping to see was something like this: http://www.surfaces.co.il/wp-content/uploads/2010/04/GrassToolbox.png Here we can determine how many features, what spatial extent.... Maybe that will give a hint why you're not seeing anything. Seeing this table for one of the rasters and the empty vector might be of help. -- Micha On 15/04/2010 12:57, M.E.Dodd wrote: > http://www.amanita-photolibrary.co.uk/Untitled-1.jpg > > I've stuck a screenshot at the above location on my personal website, I will > delete it eventually to stop things getting cluttered up, is there a more > suitable place for these screenshots? > > Anyway, it shows the grass versions of the raster files, these are the ones > that worked ok, also the vector shapefile just in qgis (all of these should > be in same CRS). Then it shows the dialogue box when I am trying to add the > grass version of this shapefile that I had created earlier from the qgis > version. It is giving the error message 'no layers available in this map'. > As I mentioned this is the first time I have tried this and I think I > followed the manual correctly but have now got stuck. I suspect its > something quite straightforward that I am missing here but can't see what it > is. > > -----Original Message----- > From: Micha Silver [mailto:[email protected]] > Sent: 14 April 2010 20:45 > To: M.E.Dodd; qgis-user > Subject: Re: [Qgis-user] averaging raster grid > > M.E.Dodd wrote: > > >> Am still trying this. Seems I might be nearly there but for some reason >> can't create a grass vector layer so can't use the v.rast.stats command. >> I have created the grass raster layers from the raster layers that are open >> in qgis and they seem fine but when I try to create the grass vector layer >> it says its worked but then won't visualise it. to summarise this part I >> have an open vector layer in qgis, also saved as a shapefile, when I run the >> command to convert this layer to a grass vector layer there are not errors >> but it won't visualise when the command completes and I can't add it as a >> new grass layer even though it says it recognises the filename. >> >> >> > Hi Mike: > (I'm assuming that the vector and raster are projected in the same CRS, > and they overlap.) > Can you open the GRASS toolbox and switch to the Browser tab. Then open > the vector section, and click on this imported vector. On the right you > should see a table similar to below. > Please either post a screen shot on the web somewhere, or you can > copy/paste the text into a mail message. Send this to the qgis-user > maillist and we can try to understand what is wrong. > While you're at it, grab the same table of info for the raster, and post > that as well... > > Vector > > > > veg > > Points > > > > 0 > > Lines > > > > 0 > > Boundaries > > > > 5732 > > Centroids > > > > 835 > > Areas > > > > 4293 > > Islands > > > > 3516 > > North > > > > 55:51:56.766357N > > South > > > > 39:35:35.604858N > > East > > > > 30E > > West > > > > 12:35:51.329041E > > 3D > > > > no > > History > COMMAND: v.in.ogr -o > dsn="/home/micha/geodata/Training/Geodata/vector/VMAP0/veg_cropland.shp" > output="veg" min_area=0.0001 snap=-1 > GISDBASE: /home/micha/geodata/grass > LOCATION: WGS84 MAPSET: PERMANENT USER: micha DATE: Wed Apr 14 22:21:18 2010 > > ------------------------------------------------------------------------ > > 802 input polygonsTotal area: 1.053955e+12 (4293 areas)Overlapping area: > 7.020819e+09 (53 areas)Area without category: 1.341091e+11 (3458 areas) > > > -- Micha Silver http://www.surfaces.co.il/ Arava Development Co. +972-52-3665918 -- The Open University is incorporated by Royal Charter (RC 000391), an exempt charity in England & Wales and a charity registered in Scotland (SC 038302). _______________________________________________ Qgis-user mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/qgis-user
