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Re: basic soubt with fltarr [message #30212 is a reply to message #30210]

Wed, 10 April 2002 06:01

the_cacc
Messages: 104
Registered: October 2001

Senior Member

Muks Raju <mpraju@umich.edu> wrote in message news:<3CB3F827.312818F9@umich.edu>...
> Hello all...i have a basic doubt with fltarr. I have this fltarr
> Actuator = fltarr(100,4)
>
> now i need to remove the first 3 columns. How do i do this. Also i may
> need to add 3 columns at the beginning and at the end or maybe a column
> of data in the middle. Ive seen about a million websites and help pages.
> None of them seem to be of any help. Could somebody please help me.
>
>
> Thanks in advance.
>
> Mux

You're bound to get some very clever responses to this one. Here's
possibly the least clever way:

Start with A = FLTARR(100,4).

* To remove the first three columns:

new = FLTARR(97,4)
new[*,*] = A[3:*,*]
A = new

* To add 3 more columns at the beginning:

new = FLTARR(103,4)
new[3:*,*] = A
A = new

* To add a column in the middle (at position p):

new = FLTARR(101,4)
new[0:p-1,*] = A[0:p-1,*]
new[p+1:*,*] = A[p:*,*]
A = new

It is possible to avoid using 'new' in most cases but you may prefer
doing it like this until you are comfortable with incomprehensible
array concatenation shennanigans.

Ciao.

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[Message index]

		Re: basic soubt with fltarr By: James Kuyper on Thu, 11 April 2002 07:21
		Re: basic soubt with fltarr By: the_cacc on Thu, 11 April 2002 03:43
		Re: basic soubt with fltarr By: James Kuyper on Wed, 10 April 2002 08:43
		Re: basic soubt with fltarr By: the_cacc on Wed, 10 April 2002 06:01
		Re: basic soubt with fltarr By: Muks Raju on Fri, 12 April 2002 17:43

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