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about structures [message #86101]

Thu, 03 October 2013 08:54

natha
Messages: 482
Registered: October 2007

Senior Member

Hi guys,

If I create a structure like this:
IDL> a={lolo, a:0, b:''}

Is there a way to change the definition of the defined structure lolo?
What I mean is that, pe, I can do:
IDL> b={lolo}
IDL> help, b, /str
** Structure LOLO, 2 tags, length=24, data length=18:
A INT 0
B STRING ''

But what I cannot do is:
IDL> delvar, a
IDL> delvar, b
IDL> c={lolo, a:intarr(2), b:strarr(2)}
% Conflicting data structures: <INT Array[2]>,LOLO.
% Execution halted at: $MAIN$

I know that the definition of the structure lolo is stored somewhere and apparently it cannot be modified. If you know a way to re-define the contents of a previous created structure, please let me know...

Another thing; I do know that using "anonymous" structures I will not have this kind of problems.
I am just curios to see if this is possible...

Thank you in advance,
nata

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[Message index]

		about structures By: natha on Thu, 03 October 2013 08:54
		Re: about structures By: David Fanning on Thu, 03 October 2013 09:10

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