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Invalid indices? [message #68416]

Tue, 27 October 2009 10:19

Y.T.
Messages: 25
Registered: December 2004

Junior Member

So I'm kinda living under a rock:
IDL Version 6.3, Microsoft Windows (Win32 x86 m32)

so I'm curious whether this is intended/expected behaviour or a bug or
what (and whether it has change in recent years):

IDL> t = lindgen(7)
IDL> print,t
0 1 2 3 4
5 6

IDL> n=5*indgen(5)
IDL> print,n
0 5 10 15 20

IDL> t[n] = 100
IDL> print,t
100 1 2 3 4
100 100

So element number 0 got set to 100 (OK), element number 5 got set to
100 and ... element number 6 also got set to 100?

Why is that? I understand that I'm specifying elements "out of
range" (number 10 and 15 etc) - is that the reason? Is this
documented? It took me by surprise...

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