[gradsusr] open grads : user defined extension

[Ousmane Ndiaye]

Hi all,
I want to use user defined extension, I installed opengrads and give it a try but got this message when I test it with "query udct" and "query udft":
===
ousmane-ndiayes-MacBook-Pro:~ ousmane$ grads

              Welcome to the OpenGrADS Bundle Distribution
              --------------------------------------------

For additional information enter "grads -h".

Starting "/Users/ousmane/opengrads/Darwin/Versions/2.0.a9.oga.1/i386/grads   " ...


Grid Analysis and Display System (GrADS) Version 2.0.a9.oga.1
Copyright (c) 1988-2010 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.a9.oga.1 little-endian readline printim grib2 netcdf hdf4-sds hdf5 opendap-grids,stn athena geotiff shapefile
Issue 'q config' command for more detailed configuration information
Loading User Defined Extensions table </Users/ousmane/opengrads/Darwin/Versions/2.0.a9.oga.1/i386/gex/udxt> ... ok.
Landscape mode? ('n' for portrait):  
GX Package Initialization: Size = 11 8.5 
ga-> query udct
Invalid QUERY argument: udct 
ga-> query udft
Warning: User Defined Functions have been disabled in this version of GrADS
ga-> hello
[1] Hello, GrADS v2.0 World! 
    argv[0] = <hello>
ga->  
===