Make the UIO IDL routines visible to IDL - somehow. There are several ways to do that. Three are described below:
NOTE: Before using IDL the environment variables for the
CO5BOLD paths should have been set. Use setarcdeppaths.sh (or .ksh,
.csh) for this purpose. Important is ${UIOPATH} which specifies where to
find the IDL routines for the UIO handling.
We recommend to create an initialisation file (e.g. named start.pro) which should be called after starting IDL
(e.g. @start).
This is necessary to define relevant paths of IDL subroutines and to
provide the UIO package.
Thus, the file should contain the following:
; -- Add user IDL directory to search path --
addpath=expand_path('+$UIOPATH/idl')
addpath=addpath+':'+expand_path('+$HOME/HYDRO/IDL/rhdpro')
if strtrim(addpath,2) ne '' then !path=addpath+':'+!path
delvar, addpath
; -- Initialize uio-routines --
uio_init, progrm='by hand'
Alternatively, one might set the IDL path variable accordingly like
export IDL_PATH="+${UIOPATH}/idl"
for example in the .bashrc file before starting IDL.
Or, you just make a symbolic link from the UIO IDL routines at their original location to a sub-directory of the main IDL directory, which should be in the IDL path anyway.
The initial (single) call of uio_init is necessary in any case.