Latest Contributions by DanJensen1

Greetings, I am a forester trying to answer a cartography question A client has asked for a file of their management overlaid with latitude bands in 0.1 degree increments. Their management area is best represented in UTM Zone 11N and what I typically deliver their products in, and I had a colleague generate bands of latitude for me, but they came in WGS 1984. If I project the WGS84 file to Zone 11N then I have a lot of distortion at the midpoints of the latitude bands (this was expected), so I would like to minimize the distortion. Is there a "best option" or a middle ground that I could project these files to that would minimize the latitude distortions and still give me the area calculations I would expect from Zone 11N, or keep them close? Thanks and best regards. Dan ... View more

I have a question regarding use of the combine tool. I have two rasters, one at 3x3 resolution and one at 1x1 resolution. When these rasters are combined using the "Combine" tool in the spatial analyst tool box (not considering arcpy), what method is used to determine the value in the new combined 3x3 raster?  There are no options for choosing an interpolation method for this tool. There is no mention of this in directly in the tool information.  Does this tool work by choosing the value of the pixel closest to the centroid of the larger pixel or is there an average taken from all pixels intersecting the larger pixel. Any insight would be appreciated. Dan ... View more

Greetings, I am trying to retrace some steps.  I was working experimentally and discounted the results and then after further analysis a few weeks later it was something that was useful.  I need to remember what the procedure was, or find another way to get the same answer. Using ArcGIS 10.1 I have a raster layer with a given hydrology values in cm I have a polygon layer with tree canopy classifications (1 for areas with tree canopy cover, 0 for polygons with no canopy cover) I want to get pixel counts for the entire polygon layer for so that I know for each unique hydrology value what the counts of canopy and no canopy pixels are.  The final goal is to build a stacked histogram in excel to show the proportion of canopy and non canopy pixels at various hydrology levels. I think I may have used zonal statistics in some manner, but I would appreciate any opinions. ... View more