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Re: Behaviour of REFORM() changed in IDL 5.5? [message #29241]

Fri, 08 February 2002 10:15

Robert Stockwell
Messages: 74
Registered: October 2001

Member

Georg Wiora wrote:

> Hi everybody!
>
> I just found out that the behaviour of the REFORM() function
> seems to be changed in IDL 5.5. With IDL 5.4 I was able to
> reform a one dimensional array to a two dimensional with a
> trailing dimension of size one. With idl 5.5 these dimension
> is removed automaticaly. But from the documentation the
> automatic reduction of dimensions should only happen if no
> dimensions are specified. This change is not documented in
> the (windows) help file.
>
> Here is my example:
> array = INDGEN(100)
> image = REFORM(100,1)
>
> In IDl 5.4 the result was: image[100,1]
> In IDl 5.5 the result is: image[100]
>
> Is there anything known about a bug fix for that?
>
>
> Thanks,
>
> Georg
>
>

Hi Georg,

What os are you? A Windows one? Unfortunately my win2000
laptop is in the shop (BTW arg!) so I can't check behaviour there.

Here is my result, it seems ok at least under linux.

IDL> r = indgen(100)
IDL> help,r
R INT = Array[100]
IDL> help,reform(r,100,1)
<Expression> INT = Array[100, 1]

So as to do exactly as suggested above:

IDL> help,r
R INT = Array[100]
IDL> image = reform(r,100,1)
IDL> help,image
IMAGE INT = Array[100, 1]

And to try a leading dimension:

IDL> help,reform(r,1,100)
<Expression> INT = Array[1, 100]

Version info
IDL> help,!version,/st
** Structure !VERSION, 8 tags, length=76, data length=76:
ARCH STRING 'x86'
OS STRING 'linux'
OS_FAMILY STRING 'unix'
OS_NAME STRING 'linux'
RELEASE STRING '5.5'
BUILD_DATE STRING 'Aug 28 2001'
MEMORY_BITS INT 32
FILE_OFFSET_BITS
INT 32

Cheers,
bob

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[Message index]

		Re: Behaviour of REFORM() changed in IDL 5.5? By: Robert Stockwell on Fri, 08 February 2002 10:15
		Re: Behaviour of REFORM() changed in IDL 5.5? By: R.Bauer on Fri, 08 February 2002 08:57
		Re: Behaviour of REFORM() changed in IDL 5.5? By: thompson on Fri, 08 February 2002 08:42
		Re: Behaviour of REFORM() changed in IDL 5.5? By: David Fanning on Fri, 08 February 2002 08:04
		Re: Behaviour of REFORM() changed in IDL 5.5? By: Georg Wiora on Mon, 11 February 2002 01:01

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