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Re: Structure of Structure [message #11330 is a reply to message #11312]

Tue, 24 March 1998 00:00

Thomas A. McGlynn
Messages: 23
Registered: March 1996

Junior Member

Stephan Oerder wrote:
>
> Thanks a lot !!!
> I tried it already on a PC-IDL-System !!!!
> But we need it on a VAX-VMS-System !!!
> Do you (or somebody else) have the PRO-File of "Create_Struct(...)" ???
> Stephan
>
> Theo Brauers wrote:
>> You may try:
>>
>> m1 = create_struct('a', 0, 'b', bytarr(12))
>> m2 = create_struct(name='m2_str', 'a', 0, 'c', fltarr(12))
>> ; array of structures
>> m3 = replicate(m2, 3)
>>
>> m = create_struct('a1', m1)
>> m = create_struct(m, 'a2' , m2)
>> m = create_struct(m, 'a3' , m3)
>>
>> Best, Theo
>> ----------------------------------------------
>> Dr. Theo Brauers
>> Institut fuer Atmosphaerische Chemie (ICG-3)
>> Forschungszentrum Juelich
>> 52425 JUELICH, Germany
>> Tel. +49-2461-61-6646 Fax. +49-2461-61-5346

You might also want to look at a function I wrote a few years
ago called MRD_STRUCT. It takes two string array arguments. The
first gives the names of the structure columns and the second gives
a prototype for what the column should look like.

E.g., A call would might look like:

names = ["name_for_col1", "name_for_col2",...]
vals = ["dblarr(10,10)", "0L", "intarr(3,2,4), ...]

str = mrd_struct(names, vals)

with additional optional arguments to create an array of
structures or to define the structure type. If you request a
structure of more than 128 elements, then the routine automatically
creates substructures, putting the first 64 elements in the
top level structure, the next 64 in a structure as the 65th element
and so forth. I believe this has run successfully on VAXes
for versions of IDL > 3.6.

It's available in the IDL Astronomy library at:

http://idlastro.gsfc.nasa.gov/ftp/pro/structure/mrd_struct.p ro

Good luck,

Tom McGlynn
tam@silk.gsfc.nasa.gov

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[Message index]

		Re: Structure of Structure By: alpha on Wed, 25 March 1998 00:00
		Re: Structure of Structure By: Thomas A. McGlynn on Tue, 24 March 1998 00:00
		Re: Structure of Structure By: David Foster on Mon, 23 March 1998 00:00
		Re: Structure of Structure By: Stephan Oerder on Mon, 23 March 1998 00:00
		Re: Structure of Structure By: thompson on Fri, 20 March 1998 00:00
		Re: Structure of Structure By: Theo Brauers on Fri, 20 March 1998 00:00
		Re: Re: Structure of Structure By: Stephan Oerder on Fri, 20 March 1998 00:00
		Re: Structure of Structure By: Theo Brauers on Fri, 20 March 1998 00:00

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