It has come to my attention that the last 2 parameters listed for the ABI 500m grid are off by 1/2 the width of a pixel, i.e., 250m. The config file lists the following values:
-5434894.885056, 5434894.885056
I believe these values should instead be:
-5434644.885056, 5434644.885056
ABI 500m grid parameters
Re: ABI 500m grid parameters
Thanks for reaching out. Of course we want any provided configurations to be accurate. I assume you modified some calculations from the work we did in your AHI post here (viewtopic.php?t=59552)? Otherwise, I don't see any ABI 500m grids in the Polar2Grid/Geo2Grid "grids.yaml" file that you can find here:
https://github.com/ssec/polar2grid/blob ... grids.yaml
Also note that ABI pixels are not perfectly round integer sizes. So a 1km grid is actually something like 1015.9 meters in height and width. Also, the scaling factor for the x and y coordinate variables in the PUG ABI Level 1b format are 32-bit floats which are insufficient for properly calculating coordinate locations across the entire full disk region.
If you could provide more details on how you came up with your numbers then hopefully I can track down a solution.
https://github.com/ssec/polar2grid/blob ... grids.yaml
Also note that ABI pixels are not perfectly round integer sizes. So a 1km grid is actually something like 1015.9 meters in height and width. Also, the scaling factor for the x and y coordinate variables in the PUG ABI Level 1b format are 32-bit floats which are insufficient for properly calculating coordinate locations across the entire full disk region.
If you could provide more details on how you came up with your numbers then hopefully I can track down a solution.