[gradsusr] Ubuntu/debian package and KML lines/polygons

[Julian Scarfe]

The latest available Ubuntu/Debian package for GrADS is 2.0.a9.  I was
using it on some NOMADS GFS data.  It creates beautiful georeferenced TIFF
file, but when I attempt to use the KML line output, it crashes with a
buffer overflow.

If I use the pre-built 2.0.1 from COLA on that SDF, it doesn't seem to work
with the Ubuntu udunits package (which is libudunits2-0, and doesn't seem
to have a udunits.dat, only .xml data files).

If I use 2.0.1 on the example data, it doesn't seem to need udunits, and I
can create beautiful KML polygons (which are very cool!). 2.0.a9 still
crashes on the same data. That leads me to believe that the bug was fixed
between 2.0.a9 and 2.0.1 (makes sense, it was an alpha!).

Unfortunately, building GrADS (with all its dependencies) on Ubuntu is well
beyond my skills.  So is there a 2.0.1 Ubuntu/Debian package out there
please?  Or is there a workaround to get the pre-built 2.0.1 from COLA
working with udunits on Ubuntu?

Thanks

Julian

--- gory details ---

Grid Analysis and Display System (GrADS) Version 2.0.a9
...
Config: v2.0.a9 little-endian readline printim grib2 netcdf hdf4-sds hdf5
opendap-grids geotiff shapefile
...
ga-> sdfopen http://nomads.ncep.noaa.gov:9090/dods/gfs/gfs20120704/gfs_18z
Scanning self-describing file:
http://nomads.ncep.noaa.gov:9090/dods/gfs/gfs20120704/gfs_18z
SDF file http://nomads.ncep.noaa.gov:9090/dods/gfs/gfs20120704/gfs_18z is
open as file 1
LON set to 0 360
LAT set to -90 90
LEV set to 1000 1000
Time values set: 2012:7:4:18 2012:7:4:18
E set to 1 1
ga-> set lat 40 60
LAT set to 40 60
ga-> set lon -10 10
LON set to -10 10
ga-> set gxout contour
ga-> d tmp2m
Contouring: 282 to 302 interval 2
ga-> set gxout kml
ga-> set kml test1
KML output file names:
test1.tif (TIFF image)
test1.kml (KML text file)
KML output type: image
ga-> d tmp2m
Created TIFF image file test1.tif
  and complementary KML file test1.kml
ga-> set kml -ln test2
KML output file name:
test2.kml (KML text file)
KML output type: contour lines
ga-> d tmp2m
Contouring: 282 to 302 interval 2
*** buffer overflow detected ***: grads terminated
======= Backtrace: =========
/lib/i386-linux-gnu/libc.so.6(__fortify_fail+0x45)[0xb6e9bdd5]
/lib/i386-linux-gnu/libc.so.6(+0xfebaa)[0xb6e9abaa]
/lib/i386-linux-gnu/libc.so.6(+0xfe483)[0xb6e9a483]
/lib/i386-linux-gnu/libc.so.6(__snprintf_chk+0x37)[0xb6e9a347]
grads(gxclvert+0x54)[0x805ec74]
grads(gakml+0x5f3)[0x809b7a3]
grads(gaplot+0x4a5)[0x809cf05]
grads(gadspl+0x5b8)[0x80e7558]
grads(gacmd+0x1922)[0x80e5d02]
grads(main+0x5ee)[0x805264e]
/lib/i386-linux-gnu/libc.so.6(__libc_start_main+0xf3)[0xb6db54d3]
grads[0x8052be9]
======= Memory map: ========
08048000-08117000 r-xp 00000000 08:06 395232     /usr/bin/grads
...


Grid Analysis and Display System (GrADS) Version 2.0.1
Copyright (c) 1988-2011 by Brian Doty and the
Institute for Global Environment and Society (IGES)
GrADS comes with ABSOLUTELY NO WARRANTY
See file COPYRIGHT for more information

Config: v2.0.1 little-endian readline printim grib2 netcdf hdf4-sds hdf5
opendap-grids,stn geotiff shapefile
Issue 'q config' command for more detailed configuration information
Landscape mode? ('n' for portrait):
GX Package Initialization: Size = 11 8.5
ga-> sdfopen http://nomads.ncep.noaa.gov:9090/dods/gfs/gfs20120704/gfs_18z
Scanning self-describing file:
http://nomads.ncep.noaa.gov:9090/dods/gfs/gfs20120704/gfs_18z
udunits(3): Couldn't open units database
"/usr/local/lib/grads/udunits.dat": No such file or directory
gadsdf: UDUNITS package initialization failure.
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