Fishnet Grid cell sizes not uniform

cskari

Hi All

I created a 0.01 degree grid (fishnet) in ArcGIS Pro for NSW, Australia. I used GDA2020 coordinate system.

I calculated some statistics inside grids. It seems like grid cell areas are slightly different. Can somebody explain this to me?

Thanks

danretired

If you used geographic coordinates to specify the cell dimensions then projected it or used a projected area to get its planar dimensions, then the cell sizes will be different because of the fact that that the EW extent of a cell decreases as you head poleward becoming a point at the poles

Geographic coordinate system - Wikipedia