Latest Contributions by ShannonShy

Hi there, I'm working on calculating tree heights (canopy height) for our school's research forest. All was going well until I processed Raw comprehensive lidar data into terrain data then back into raster for a DSM. When I ran the bare earth lidar data I didn't receive any complications but for the final DSM output there are these extremely high data cells that seem to run North/South through the data. I would say that these are power lines but power lines do not run 2133.24 meters above ground also I know the area and there aren't power lines there. I've included images of both the DEM and DSM raster. Above is the DSM raster, notice the HIGH elevation value relative to the DEM's HIGH elevation value. This is not a natural feature. Above is the DEM raster, extremely smooth and normal. No problems. So all in all, is there a way to fix this weird issue? I've tried to exclude the high value in the symbology tab under the properties but that won't help when it comes time to crunch some numbers. I'm going to subtract the DEM from the DSM to get canopy heights, then overlay that onto stem mapping data, but first I need to fix the issue. here are the links I followed to help me with DEM and DSM processing: Creating raster DEMs and DSMs from large lidar point collections—Help | ArcGIS for Desktop Importing terrain dataset source measurements—Help | ArcGIS for Desktop Estimating forest canopy density and height—Help | ArcGIS for Desktop ... View more

     Some background, so I work for and go to school at West Virginia University and I have been subcontracted to work with the DEP on stream management and analysis for the entire state. My most recent project has been to create buffers around streams leading to surface water intakes in order to help monitor chemical spills and also regulate tanks used by oil and gas companies.      My problem is that when creating the buffers around the streams I failed to include elevation and slope when calculating the distance of the buffers from the stream center (left and right banks for major rivers). My idea is to take the buffers I have (~160 of them) and make them flexible to reflect the topography because 1000 ft linearly looks a lot different than when that same 1000 ft would "decay" because of the topography and slope. I imagine my buffers being able to snap to contour lines to limit the planar length and reflect the topography.      I'm also wondering if using any tools in the 3D analyst would be of use, tools such as 3D length...I'm just not sure.      I'm aware that this could be solved by re delineating these buffers by working out of grid and also using cost-path but I would like to save myself the trouble of having to do these again since the entire project took about 6 months due to tedious calculations and attributions. Thanks! I am using Arc Map 10.3 and surrounding software. ... View more

I've been working on a distribution model of about 40 different species that encompass one specific location.  Each species' range/distribution has been made into a layer, so i have about 40 layers. I want to make a map book that contains a page for each layer, this is different than making a map book of data driven pages because that shows an entire area at different extents.  How do I automate the map book process without having to make a different map for each individual layer?   Thank you, and any solution will help. ... View more