| newbie seeks to debug "% Syntax error." [message #61169] |
Fri, 04 July 2008 14:05 |
Tom Roche
Messages: 11
Registered: July 2008
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Junior Member |
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I'm very new to IDL (though not to coding), so I wanna make sure I
understand the following problem correctly before I go up my food
chain for help:
My advisor just dumped got a big bucket o' IDL (of which he is not the
author) in my lap. I copy/modified the top-level .pro file
$ pushd ~/jjw/IDL
$ cp regrid_mozt42_yyf.pro regrid_mozt42_tlr.pro
$ chmod a-w regrid_mozt42_yyf.pro
and am editing my copy. After reading some introductions to IDL I can
run it and do some printf-style debugging. The problem I'm having is
IDL> regrid_mozt42_tlr
> % Compiled module: REGRID_MOZT42_TLR.
> resfield = regrid(var,oldgrid=oldgrid, newgrid=newgrid, /use_grids, $
> ^
> % Syntax error.
> At: /home/tlr/jjw/IDL/ncregrid.pro, Line 180
> resfield = regrid(var[*,*,*,0],oldgrid=oldgrid, newgrid=newgrid, /use_grids, $
> ^
> % Syntax error.
> At: /home/tlr/jjw/IDL/ncregrid.pro, Line 195
> thisfield = regrid(var[*,*,*,j],oldgrid=oldgrid, newgrid=newgrid, /use_grids, $
> ^
> % Syntax error.
> At: /home/tlr/jjw/IDL/ncregrid.pro, Line 200
> % Compiled module: NCREGRID.
> % Attempt to call undefined procedure/function: 'NCREGRID'.
> % Execution halted at: REGRID_MOZT42_TLR 21 /home/tlr/jjw/IDL/regrid_mozt42_tlr.pro
If I understand correctly (and please correct me if I don't!) IDL
tries to evaluate "regrid(...)"
0 as a function or procedure on $IDL_PATH
1 as an array
I'm guessing the etiology here is that IDL fails to find the
definition, then gets the syntax error at the '=', which is illegal in
an array.
In my .bash_profile I have
$ fgrep -e 'IDL' ~/.bash_profile
> # for IDL
> export IDL_DIR="/usr/local/rsi/idl"
> export IDL_LIB="${IDL_DIR}/lib"
> if [[ -z "${IDL_PATH}" ]] ; then
> IDL_PATH="~/jjw/IDL:${IDL_LIB}"
~/jjw/IDL is the bucket o' IDL
else
> IDL_PATH="~/jjw/IDL:${IDL_LIB}:${IDL_PATH}"
fi
> export IDL_PATH
and the scriptlet
for DIR in ${IDL_PATH//:/ } ; do
for CMD in \
"find ${DIR} -type f -name '*.pro' | xargs grep -nie 'pro\|
function' | fgrep -e 'regrid' | fgrep -ve ';'" \
; do
echo -e "${CMD}"
eval "${CMD}"
done
done
produces
> find ~/jjw/IDL -type f -name '*.pro' | xargs grep -nie 'pro\|function' | fgrep -e 'regrid' | fgrep -ve ';'
> /home/tlr/jjw/IDL/mozem_regrid.pro:71:FUNCTION RegridSliceAW, data, newgrid=newgrid, oldgrid=oldgrid, $
> /home/tlr/jjw/IDL/mozem_regrid.pro:210: grid->GetProperty, nlon=nlon, nlat=nlat, wlat=wlatn
> /home/tlr/jjw/IDL/mozem_regrid.pro:211: oldgrid->GetProperty, wlat=wlato
> /home/tlr/jjw/IDL/mozem_regrid.pro:340: oldgrid->GetProperty, wlat=wlato
> /home/tlr/jjw/IDL/mozem_regrid.pro:341: grid->GetProperty, wlat=wlatn
> /home/tlr/jjw/IDL/ncregrid.pro:73:pro ncregrid, filename, oldgridname, newgridname, oshiftlon=oshiftlon, $
> /home/tlr/jjw/IDL/regrid_mozt42_tlr.pro:3:PRO regrid_mozt42_tlr
> find /usr/local/rsi/idl/lib -type f -name '*.pro' | xargs grep -nie 'pro\|function' | fgrep -e 'regrid' | fgrep -ve ';'
(I also looked at the lines with comments, but there were no
results of interest. I'm guessing IDL does not do end-of-line
comments? like this java fragment
return false; // TODO: throw exception
) So I'm guessing I need to find out who supplied this code, and find
out from them where 'regrid' is defined. Am I missing something?
TIA, Tom Roche <Tom_Roche@pobox.com>
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