I am working with the tri.txt (terrain ruggedness index) file from this paper: http://diegopuga.org/data/rugged/
I've uploaded the raster data from the file into ArcMap and now have it as a .tif file. My goal is to use this data and PostGIS to get the ruggedness value for certain cities in the US (I have the lat/lon values for the cities I'm interested in). I'd like to convert the raster data to points, get the lat/lon values of each of those points, and find the closest data point to each city.
- The website I got the raster file from doesn't mention an srid. How do I find out what projection it uses?
- I'm not familiar with scripting in ArcGIS. I've found the arcpy.RasterToPoint_conversion function in Python that I think I can use for this, but I'm not sure what the arguments should be.