Calculating elevation difference between two surfaces

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02-14-2014 06:47 AM
ErinArgyilan
New Contributor
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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8 Replies
michaelcollins1
Occasional Contributor III
the Cut Fill tool should do what you need
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ErinArgyilan
New Contributor
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?
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TimBarnes
Occasional Contributor III
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.
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ErinArgyilan
New Contributor
I do have spatial analyst.  Is the raster elevation different than the raster created by TIN to RASTER in 3D Analyst?
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ErinArgyilan
New Contributor
Never mind!  That worked and it looks fabulous.  THANK YOU!
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Fadhil_PrasetioRachmadi
New Contributor

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

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AbdullahAnter
Occasional Contributor III

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

You can subtraction two raster to get the difference elevation.  

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TimBarnes
Occasional Contributor III
No problem :0)

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