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negative indices, am I missing something here? [message #81991]

Fri, 02 November 2012 12:51

d.rowenhorst@gmail.co is currently offline

d.rowenhorst@gmail.co
Messages: 10
Registered: August 2008

Junior Member

IDL 8 brought negative indices for arrays. Great, love them. However, I am getting strange results.

IDL> a = indgen(3,5)
IDL> print, a[*,-1]
12 13 14

Good, that is what I thought I should get.

IDL> print, a[*, [3,1,4]]
9 10 11
3 4 5
12 13 14

Also, this looks right to me.

So why doesn't this work?
IDL> print, a[*, [3,1,-1]]
9 10 11
3 4 5
0 1 2

Is this the expected behavior? Or a bug?

Mac 10.8.2 IDL 8.2.1

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negative indices, am I missing something here?

By: d.rowenhorst@gmail.co on Fri, 02 November 2012 12:51

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