comp.lang.idl-pvwave archive: archive » Concatenating arrays across chosen dimension

Home » Public Forums » archive » Concatenating arrays across chosen dimension

Show: Today's Messages :: Show Polls :: Message Navigator
E-mail to friend

Re: Concatenating arrays [message #45366 is a reply to message #31266]

Mon, 05 September 2005 07:08

K. Bowman
Messages: 330
Registered: May 2000

Senior Member

In article <431af10e@quokka.wn.com.au>, "RPF" <RPF@lol.com> wrote:

> Also is there an easy way to
> make an upper triangular matrix i.e. make all entries below the diagonal
> zero ?

IDL> n = 5
IDL> i = REBIN(LINDGEN(n), n, n)
IDL> j = REBIN(TRANSPOSE(LINDGEN(n)), n, n)
IDL> print, i
0 1 2 3 4
0 1 2 3 4
0 1 2 3 4
0 1 2 3 4
0 1 2 3 4
IDL> print, j
0 0 0 0 0
1 1 1 1 1
2 2 2 2 2
3 3 3 3 3
4 4 4 4 4
IDL> a = (i GE j)
IDL> print, a
1 1 1 1 1
0 1 1 1 1
0 0 1 1 1
0 0 0 1 1
0 0 0 0 1

Cheers, Ken Bowman

Report message to a moderator

[Message index]

		Concatenating arrays across chosen dimension By: Dick Jackson on Tue, 25 June 2002 15:05
		Re: Concatenating arrays By: K. Bowman on Mon, 05 September 2005 07:08
		Re: Concatenating arrays By: David Fanning on Sun, 04 September 2005 12:11
		Re: Concatenating arrays By: Wonko[3] on Sun, 04 September 2005 12:06

Previous Topic:	constraining parameters in multi-Gaussian 1D fitting
Next Topic:	Re: constraining parameters in multi-Gaussian 1D fitting

-=] Back to Top [=-

[ Syndicate this forum (XML) ] [

] [

]

Current Time: Mon Oct 27 02:53:55 PDT 2025

Total time taken to generate the page: 3.12054 seconds