Re: Constructing arrays

[Martin Helm]

Am Montag, 26. Juli 2010 16:27:02 schrieb Andy Buckle:
> On Mon, Jul 26, 2010 at 3:11 PM, dirac <address@hidden> wrote:
> > That worked brilliantly, can I ask how it works? Also what does the
> > double equals sign mean (==) in matlab? Again probably a really simple
> > explanation if I knew other languages!
> >
> > What do you mean by the PS you left? I think I accidently replied to the
> > email notification I recieved...
> 
> Like in c
> = is the assignment operator
> == is the equality operator
> 
> a==0 gives a matrix with ones at locations where a is 0, and zeros
> everywhere else. find() takes a matrix like this and yeilds a matrix
> of the indices of all nonzero values. If you index the original array
> with that, you can set all these locations to something. In this case
> the empty matrix, which removes them.
> 
> I recommend that you play around with simple examples.
> 
> The PS: If you include previous text in your email please do this
> 
> >> A
> >
> > B
> 
> C
> 
> please do not do this
> 
> C
> 
> > B
> >
> >> A
> 
> (Depending on email client...) the first is easier to follow.
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> 
I am a little bit late now, Andy answered already the remaining questions. 

@dirac: If you want to look into the following link

https://prof.hti.bfh.ch/sha1/Labs/PWF/Documentation/OctaveAtBFH.pdf

you will find a nice tutorial written by Andreas Stahel which is based on many 
examples and is a good companion to the official octave documentation.

- mh