| using Make_Array in Execute() call [message #4749] |
Fri, 14 July 1995 00:00 |
Martha-Kusterer-S1C
Messages: 2
Registered: July 1995
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Junior Member |
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Has anyone had experience with calling Make_Array inside an execute call? I am
currently forced to use IDL 3.5.1 and need to create a variable containing a
variable number of variable sized arrays for which the sizes are not known
until run time. I decided to create a structure with a variable number of tags,
each of which references a different sized 2-d array. I decided to create the
tags using a string and the execute call. I got the call to work when the
routines are compiled and run normally, but when I create *.sav file of the
compiled routines and try to restore it later, it doesn't work. I will someday
update to IDL 4.0 and I will change the code to use handles but that option is
not yet open to me.
I have included an example program of how I am creating the structure. I get
the feeling that I am doing something illegal in IDL by dynamically creating
variables using execute but I thought by calling Make_Array it would be ok.
pro arr,varname,typearr
varname = 'plt_data'
typearr = ',/float'
ntraces = [14,14,7,3,3]
npts = [100,100,40,40,40]
npanels = 5
ending = strarr(npanels)
ending(*) = '),'
ending(npanels-1) = ')}'
t = 'temp'
arrstr = varname+'={'
for n=0,npanels-1 do begin
num = strtrim(string(n,format="(I2)"),2)
ttra = strtrim(string(ntraces(n),format="(I3)"),2)
tn = strtrim(string(npts(n),format="(I8)"),2)
arrstr = arrstr+'P'+num+':'+'make_array('+ttra+','+tn+typearr+ending( n)
endfor
print,'arrstr',arrstr
status = execute(arrstr)
help,plt_data,/struct
print,plt_data.(1)(0,0)
RETURN
eND
--More--(93%)
--
Martha Bolz Kusterer
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