Opposite column order

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Opposite column order

Unread postby Esteban » Thu Jun 20, 2019 3:58 pm

Hellow,

Is there a way in which you could change, the column order to exactly the opposite.

What I mean is, I want this:

[1,0,2,1,0]

To become this:

[0,1,2,0,1]

I will be useful if it works for both the columns and the rows of a matrix.

Regards,
Esteban
 
Posts: 10
Joined: Tue May 14, 2019 12:13 pm

Re: Opposite column order

Unread postby TomDoan » Thu Jun 20, 2019 10:19 pm

dec rect b(%rows(a),%cols(a))
ewise b(i,j)=a(%rows(a)+1-i,j)

will make B a copy of A with the rows reversed. You can do the analogous operation with the columns. (You can also do the rows and columns together).
TomDoan
 
Posts: 7147
Joined: Wed Nov 01, 2006 5:36 pm


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