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Hi! I am trying to use ArcMap 10.4 scatterplot matrix to show the correlation between tornado strength and elevation. I have a 10m DEM (32-bit floating point) for the state, along with survey points. I'm having trouble converting the DEM raster values to

Question asked by whitneyh777 on Oct 23, 2016
Latest reply on Oct 27, 2017 by Dan_Patterson

Hi! I am trying to use ArcMap 10.4 scatterplot matrix to show the correlation between tornado strength and elevation. I have a 10m DEM (32-bit floating point) for the state, along with survey points. I'm having trouble converting the DEM raster values to point values, in order to graph them on the scatterplot. When I use Spatial Analyst's "Extract Values by Points" tool, and it keeps giving me -9999 placeholders for the elevation column. I checked and both of my spatial references are NAD83 UTM, so it's not a spatial/projection issue. I can't figure it out. HELP!

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