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pointer and structure stuff ... [message #38202]

Tue, 24 February 2004 07:17

Ingo Salzmann
Messages: 10
Registered: December 2002

Junior Member

Hi,
Can anybody please help me with the following banal problem ...

IDL> info = {vectors:Ptr_New(vectors)}
IDL> v1 = Indgen(3,30)
IDL> *info.vectors = {v1:v1}
IDL> help, (*info.vectors).v1
<Expression> INT = Array[3, 30]

IDL> temp = Intarr(3,20)
IDL> (*info.vectors).v1 = temp
IDL> help, (*info.vectors).v1
<Expression> INT = Array[3, 30]

with the first 60 elements zeroed ...
Can I have IDL resize its variable (*info.vectors).v1 easier than by the
following statement:

IDL> v1=Intarr((SIZE(temp))[1],(SIZE(temp))[2])
IDL> *info.vectors = {v1:v1}
IDL> (*info.vectors).v1 = temp
IDL> help, (*info.vectors).v1
<Expression> INT = Array[3, 20]

If dealing with a large ammount of elements stored in the info structure
this doesn't seem handy to me :-(
Thanks for suggestions,
Ingo

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pointer and structure stuff ...

By: Ingo Salzmann on Tue, 24 February 2004 07:17

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