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I have a raster of 0.25 degrees resolution. What's the right equation to determine how is the resolution in meters?

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  • There isn't one. The true distance varies by pixel in both dimensions.
    – Vince
    Feb 3 at 3:42
  • so actually what I did is that the raster spatial reference is GCS-WGS-1984 and I projected it to WGS 1984 UTM Zone 11N spatial reference, this converted the cell size to meters but I don't know if this approach is right.
    – Omab
    Feb 3 at 4:07
  • Okay, but there still isn't a 1:1 correspondence between degrees and UTM pixels. The interpolation is a factor in whether it's "right" (more specifically, how not right it is), but you have nowhere near enough information in the Question to determine that.
    – Vince
    Feb 3 at 4:21
  • Okay, got it thank you. How about if the resolution is in arc seconds, is it the same?
    – Omab
    Feb 3 at 4:31
  • There are lat/lon legth calculators in the web, for example csgnetwork.com/degreelenllavcalc.html.
    – user30184
    Feb 3 at 13:12

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