Ok, I'm new. I have downloaded NED 1/9 arc-second DEM tiles and mosaic'ed a DEM The cell size is 3.0864198e-005, 3.0864198e-005. I am having trouble resampling to a cell size to match other rasters I am using. Also, I need to match the number of rows and columns in each raster. Any ideas?
Your cell sizes are in fractions of a decimal degree. Are you intending to work in a projected coordinate system? If so, then you should project the data to match your other projected data before you proceed.
Hi Xander. I used Project Raster to change the DEM coordinate system to NAD 1983 (2011) StatePlane North Carolina FIPS 3200 (Meters). The cell size, before and after projection, is 3.0864198e-005, 3.0864198e-005. I have a NWI shapefile in this coordinate system that I have to convert to raster, then to ASCII for input into SLAMM model. For the model, the number of rows and columns have to be the same for each files (that's where I'm ultimately going with this). When converting from polygon to raster, it doesn't work to to set the cell size for the output to 3.0864198e-005, 3.0864198e-005. I end up with 300 x 300 (default), which I have resampled down to 10 x 10, but that doesn't get me where i need to be. I apologize for my inexperience, and appreciate any help I can get with this!
3.0864198e-005 is 0.0000308 m ... Unless you are working on a hugely microscopic scale, I venture this is still in decimal degrees.
Can you confirm what the exact coordinate system was prior to projecting?
You did use the Project raster tool and not the Define projection?
Something is still amiss
Well something went wrong since the raster extent and cell size are still in decimal degrees .
When using the Project raster tool, click on the Environments tab on the bottom right of the dialog and go to the raster section and set the desired cell size and other parameters appropriate to your situation, particularly if you are trying to align the rasters to other projected rasters (ie snap raster etc etc). When you have projected the raster, Insert Data Frame and add the newly projected raster to ensure that it hasn't been contaminated by the presence of other data and check the extents and everything again.