Bug in 1.9b4

[Bernat Codina]

The 1.9b4 version of GrADS has a problem when handling the intrinsic
2-dimensional LAT and LON variables with projected data:

ga-> display cos(LAT)
Notice:  Automatic Grid Interpolation Taking Place
Cannot contour grid - all undefined values

For this reason, some of my scripts doesn't work properly.
Fortunately, the version 1.8SL11 works fine. I hope that GrADS
developers will take this into account in a future release.

Bernat Codina
Dept. of Meteorology
University of Barcelona