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Re: Want to get Array(48) instead of Array(1,48) [message #29872 is a reply to message #29871]

Mon, 25 March 2002 18:42

Mark Hadfield
Messages: 783
Registered: May 1995

Senior Member

"chi-kuei" <twcollie@hotmail.com> wrote in message
news:a7om25$8jn$1@news01.cit.cornell.edu...

> ...I notice they are different because when I use curvefit, the
> Array[1,48] will give me error message, the Array[48] will not.
>
> I can make the Array[1,48] become Array[48] without changing the
> value by doing this:
>
> IDL> test_array = test_array(*)
>
> This means extra steps. Am I doing this in the longer way? Is there
> any shortcut of doing this.

No, there is no real shortcut. It is common when using IDL to find
that you have the data you want but the array is not shaped exactly
how you need it. The most versatile and efficient solution is to use
the REFORM function. If it is called with a single argument (the array
to be reshaped) then it will strip out all unit dimensions. Since the
number of elements in the array is not being changed you can use the
OVERWRITE keyword for greater efficiency, thus:

IDL> test_array = reform(test_array, /OVERWRITE)

--

Mark Hadfield
m.hadfield@niwa.co.nz Ka puwaha et tai nei
http://katipo.niwa.co.nz/~hadfield Hoea tatou
National Institute for Water and Atmospheric Research (NIWA)

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[Message index]

		Re: Want to get Array(48) instead of Array(1,48) By: Dominik[1] on Mon, 25 March 2002 23:38
		Re: Want to get Array(48) instead of Array(1,48) By: Mark Hadfield on Mon, 25 March 2002 18:42
		Re: Want to get Array(48) instead of Array(1,48) By: chi-kuei on Tue, 02 April 2002 08:24
		Re: Want to get Array(48) instead of Array(1,48) By: R.Bauer on Mon, 25 March 2002 23:50

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