volumetric measurements in Arc?     Isis Support Center Forum Index » GIS Applications » volumetric measurements in Arc? View previous topic :: View next topic   Author Message Planetary Researcher Ra (Power Member) Joined: 02 Mar 2005 Posts: 130   Posted: Thu Mar 03, 2005 12:14 pm    Post subject: volumetric measurements in Arc? Do you have a write-up/cookbook or similar info on how volumetric measurements are made using topo data with ArcView?  Back to top » thare GIS Support Team Joined: 22 Mar 2004 Posts: 663 Location: USGS Astrogeology Research Program, Flagstaff, AZ   Posted: Thu Mar 03, 2005 12:15 pm    Post subject: Here is basically a cookbook by Nathan Bryant, doing some Valles Marineris calculations. http://www.geo.utexas.edu/courses/371c/project/2001/Bryant/Marineris.htm Summary: If the feature can be has a flat top or bottom like a water body then you don't have to do anything special. You should be able to use the Cut/Fill function found in 3D Analyst. Otherwise, you can just calculate the volume using the "raster calculator" after the area has been clipped or extracted out. For a small volcanic feature with a flat bottom (not on a slope) and assuming you have the topo you can do the same. If the feature you wish to measure is on a sloped surface then you need to estimate a top or bottom surface to subtract the original surface from. For example, let's take a channel. This can be done by digitizing around the channel feature on the rim and cut away the area you wish to calculate the volume of (channel interior). Then using a neighborhood calculation (boxfilter) you can fill in from the surrounding rim. For large holes it is easier to create a TIN (triangulated irregular network) to fill over the large hole and then convert back to a raster. Either way, you now have an approximated top surface to subtract the original DEM from. Here is an abstract by Eric Noreen on Valles also: http://www.lpi.usra.edu/meetings/lpsc2002/pdf/1919.pdf  Back to top » Display posts from previous: All Posts1 Day7 Days2 Weeks1 Month3 Months6 Months1 Year Oldest FirstNewest First  Isis Support Center Forum Index » GIS Applications » volumetric measurements in Arc?     All times are GMT - 7 Hours Page 1 of 1   Jump to: Select a forum The Isis Support Center----------------Policies & Announcements Isis 3----------------Isis 3 SupportInstallation Support for Isis 3Tips & Tricks for Using Isis 3Bug Reports for Isis 3Chat about Isis 3 Isis 2----------------Isis 2 SupportTips & Tricks for Isis 2Installation Support for Isis 2Bug Reports for Isis 2Chat about Isis 2 Planetary GIS Discussions----------------GIS ApplicationsGIS and IsisPlanetary GIS Datasets - MarsPlanetary GIS Datasets - Other Other Topics----------------Isis Web: Comments & Questions  You cannot post new topics in this forum You cannot reply to topics in this forum You cannot edit your posts in this forum You cannot delete your posts in this forum You cannot vote in polls in this forum You cannot attach files in this forum You cannot download files in this forum

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