ucar.nc2.grib.QuasiRegular cubicSpline wraps unconditionally about thredds HOT 3 OPEN

To be honest, I was not aware that this is being used in any other form than global gaussian grids. Can you somehow send an example file?

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This is actually a file used in unit-testing (hence noticing the change). Looking into it a bit more, I'm not sure that we actually still make much use of thinned datasets. So while this is no longer a high priority fix for me, it might be good to sort this out for the purposes of loading archived data and in case anyone else is using non-global thinned datasets.

https://www.dropbox.com/s/p01lhuidbxu539h/HPPI89_KWBC.grb?dl=0
The above file is the grib file used in the unit test. It is from 2010, so a little bit old, but not ancient.

from thredds.

Sorry its taken so long to respond.

Its not clear what a decent algorithm would be for non-global thin grids, if there are no bounds on the edges. in the example file, the first 3 lines, there are 2, 3 and 5 points:

   0: 103697.906250,103697.906250,
  1: 103697.906250,103697.906250,103138.687500
  2:  103697.906250, 103697.906250, 103138.687500, 103200.296875, 103357.07815

and we are supposed to interpolated to 73 (!) for each. how would you do it?

OTOH, I agree that pretending that they wrap around is stupid. The longitude extent is -120 to -30 degrees east, lat -90 to 0 degrees north.

Seems likely they sectioned a global grid?

6 Generating Process Type : (96) Global Forecast System Model T574 - Forecast hours 00-192 T190 - Forecast hours 204 - 384

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