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Re: Matrices [message #82886 is a reply to message #42151]

Mon, 21 January 2013 07:20

Matthew Argall
Messages: 286
Registered: October 2011

Senior Member

> I want to create an N by 4 (Nx4)matrix and an N by 1 (Nx1)matrix with my own elements. Does anyone know how to do it?

Helder's first example is good, but also, look into

Look into the lonarr(), intarr(), fltarr(), dblarr(), etc. functions in addition to make_array(). If you want a floating point array

N = 10
myNbyFour = fltarr(N, 4)
myNbyOne = fltarr(N, 1)

Then you can assign values to each element like

myNbyFour[0,0] = 5

or

myNbyFour [:,0] = [1, 2, 3, 4]

etc

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[Message index]

		matrices with different size By: ikverveelmijdood on Thu, 13 January 2005 08:21
		Re: matrices with different size By: Chris Lee on Thu, 13 January 2005 14:30
		Re: Matrices By: Jeremy Bailin on Mon, 21 January 2013 12:06
		Re: Matrices By: fd_luni on Mon, 21 January 2013 09:55
		Re: Matrices By: fd_luni on Mon, 21 January 2013 09:39
		Re: Matrices By: Matthew Argall on Mon, 21 January 2013 07:21
		Re: Matrices By: Matthew Argall on Mon, 21 January 2013 07:20
		Re: Matrices By: Helder Marchetto on Mon, 21 January 2013 06:48

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