2

I would need to know the GSD or grid size (resolution), in meters, of a raster created when working in a Geographic coordinate system in ArcGIS. Is is possible?

Even better, can I set the Cell size of the raster in meters (not in degree units) when I perform the raster creation if I am working in a Geographic coordinate system?

1 Answer 1

2

If you want an exact value, this is simply not possible. Indeed, the size of a degree varies with the location, so you can't tell exactly the size of your pixel in meter based on a grid in degree. If you convert to a projected coordinate sytem, this grid will be distorted and you will need some kind of resampling.

For a quick estimate, you can consider that 1 degree of latitude = 111.3 km and one degree of longitude = 111.3 km* cos(latitude). See here for more details

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.