Help please. Trying to find slope values for point features

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11-05-2017 07:57 AM
larrysanboeuf
New Contributor

Okay so I have point locations for ash trees, which were uploaded with coordinate measurements.

I have uploaded a DEM for the area and found slope.

My question is how to combine these layers.

I want to basically bin all these trees based on the slope that they are growing on. Can I either add slope to the tree location attribute table or select the certain trees based on their slope? Please let me know what you think.

Thanks

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3 Replies
DanPatterson_Retired
MVP Emeritus

The obvious answer would be Extract Values to Points in the Spatial Analyst toolbox

larrysanboeuf
New Contributor

I tried this several times. The best case scenario I got it to put out a table but the slope values were all listed as "null."  Any advice? Do I have something wrong?

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DanPatterson_Retired
MVP Emeritus

Yes... your two files are not in the same coordinate system, hence they don't overlap even though 'Projection-on-the-fly' in the dataframe would suggest otherwise.  Find the coordinate systems of both and it would be easiest to project the points to match the coordinate system of the raster