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You get points for persistence! You can find this tool by searching the Desktop help; "point values raster" brought up the two tools you're looking for. Also, here's a more direct way to search for tools: Desktop Help 10.2: A quick tour of finding tools BTW - The lock file is not an image, it's a bookmark used by ArcMap to indicate that the data is open in an ArcMap layer. When you close ArcMap it is deleted. No, this doesn't work. I can't select the Lock or Tif file via spatial analyst --> extract values to points. But I think by transforming it back to point grid and than to voronoi polygons is also a good solution.
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11-19-2013
09:22 AM
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thanks curtvprice! In which toolbox do I find this extract tool? I found a different solution: I can convert the tif/Lock file in "conversion tools" to points ("Raster to points"). Then I have a point grid with the aspect angle. After it i can convert the point raster to voronoi polygons, which didn't worked in ArcMap so i used QGis, which worked perfectly. Now I have a polygon Grid where i can select the aspect.
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11-19-2013
07:58 AM
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Hello! I'm trying to find out, how many trees in a region died referred to the cardinal direction of the slope. Therefore i have a contour map of the elevation of the area and a point shapefile with the location of dead trees. If I convert the the contour map to a TIN file, then i can calculate the aspect and select the dead trees based on the aspect. But I want to do it with a Grid file cause I think it's more correct. unfortunately it's not working. I can convert the contour map to a grid and i can calculate the aspect from the grid, but unfortunately it's a LOCK file or a TIF file and I can't use it to select the cardinal direction to find the amount of dead trees per cardinal direction cause there is no attribute table to open. Can somebody help me out?
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11-16-2013
04:14 AM
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