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Calculating elevation difference between two surfaces

ErinArgyilan

Hello. This is my first post so thank you in advance for your help. I have two TIN surfaces for a landscape from two separate years. I want to create a map of the ELEVATION change between the two years. I have used the surface difference tool but it only returns erosion(cut) or deposition(fill). The information in the attribute table seems too coarse to create a good map. Does anyone have advice on how to generate a map of the elevation change between the two years?

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AbdullahAnter

Use Raster Calculator tool. Raster Calculator—Help | ArcGIS Desktop

You can subtraction two raster to get the difference elevation.

Fadhil_PrasetioRachmadi

how did you do that? by using cut and fill?

TimBarnes

No problem :0)

(feel free to mark my post as the answer if it solved your problem

)

ErinArgyilan

Never mind! That worked and it looks fabulous. THANK YOU!

ErinArgyilan

I do have spatial analyst. Is the raster elevation different than the raster created by TIN to RASTER in 3D Analyst?

TimBarnes

Do you have spatial analyst? To get actual difference values, I'd look at converting your TINs to elevation rasters and then using some raster math to work out the difference (i.e. higher raster minus lower raster).

I've always found it less than useful that the Cut/Fill tool doesn't also output the actual differences between cells too.

ErinArgyilan

Thanks! It looks as though that will again give me a gain or loss. The map is better then because it is by pixel. But I'm not getting an elevation change like I have seen in AutoCAD. Would you suggest that I then use the attribute table to calculate the elevation change since it returns a table of area and volume cut/fill?

michaelcollins1

the Cut Fill tool should do what you need

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