[gradsusr] Build GrADS 2.20 from Source, Errors with GRIB2 and gribmap

[William Daniel Scheftic]

Hi Jennifer,

I'm not sure why I didn't receive your reply since I'm subscribed to the 
list, but I pulled your response off the gradsusr Archives.

Thanks for your help! My responses are below.

 >> On Jan 30, 2018, at 4:01 PM, William Daniel Scheftic <scheftic at 
email.arizona.edu> wrote:
 >>
 >> Hi,
 >>
 >> I have built GrADS-2.2.0 from source for OpenSuse Leap 42.3 on the 
Windows Subsystem for Linux.
 >Bravo!
 >
 >>
 >> I have tested reading netcdf and GRIB1 files and they work fine. 
However, I am not able to read GRIB2 files. I get the following error if 
I try to open a GRIB2 file that already had a .idx file produced:
 >>
 >> GRIB2 I/O Error: Predefined bitmap applies (ibmap=47244640267)
 >I belive this is related to a setting for CFLAGS in the grib2c 
library’s makefile. Try it without the “-D__64BIT__” .

Great!  This worked well, I reran gribmap got all matches and it works 
in GrADS now.

 >
 >You could also try digging out the g2clib binary from the tarball of 
my SUSE supplibs builds:
 > 
ftp://cola.gmu.edu/grads/Supplibs/2.2/builds/supplibs-suse12.1-x86_64.tar.gz
 >and see if that changes anything.
 >
 >> If I rerun the built gribmap on the file to produce a new .idx file 
I get a different error:
 >> Cannot contour grid - all undefined values
 >You should always look at the verbose output from gribmap to make sure 
you’ve matched the variables in your descriptor the variables in the 
data file
 >
 >>
 >> This file worked fine with the SUSE-12.1 binaries using the gribmap 
in that distribution.
 >
 >> I should point out that the built gribmap gives a segmentation fault 
on verbose (-v) mode.
 >Your gribmap or mine?
 >I can’t reproduce a seg fault with the -v option on my SUSE server. 
What is the source for the grib2 file you’re using?
 >
 >
 >>  I had a different issue with the binaries regarding gxprint that is 
working now that I've built from source.
 >What was wrong with gxprint?

When trying to output a .png image I got the following warning with a 
blank image output.  Since I was linking the GrADS binaries with 
packages installed through zypper, perhaps it was a versioning problem.
libpng warning: Application built with libpng-1.6.8 but running with 1.5.12

 >
 >>
 >>
 >> After some struggles I got all the libraries to build.
 >Heh. Yeah. The struggles are real.
 >I think all those errors can be safely ignored, especially since you 
got this:
 >
 >>
 >>   |  - GUI disabled               |
 >>   |  + READLINE enabled           |
 >>   |  + GEOTIFF enabled            |
 >>   |  + SHAPEFILE enabled          |
 >>   |  + GD enabled                 |
 >>   |  + CAIRO enabled              |
 >>   |  + GRIB2 enabled              |
 >>   |  + HDF4 enabled               |
 >>   |  + HDF5 enabled               |
 >>   |  + NETCDF4 enabled            |
 >>   |  + OPeNDAP enabled            |
 >>   |     for grids and stn data    |
 >
 >--
 >Jennifer Miletta Adams
 >Center for Ocean-Land-Atmosphere Studies (COLA)
 >George Mason University