Matlab for loop

mechMH · Jun 12, 2019

Hi everyone,
i'm working on a code which has two 5*3 matrices,I want to add each column in say matrix "A" to every column in matrix "B"
so the resultant matrix is 5*9.
I'm doing it with FOR loop but it only returns the final column values. I hope if there are any suggestions!

GregLocock · Jun 12, 2019

There are neater ways of doing this, but using loops is robust

Out_matrix=zeros(5,9);
for jj=0:2
for kk=1:3
Out_matrix

,(jj*3)+kk)=A

,jj+1)+B

,kk);
end
end

Cheers

Greg Locock

New here? Try reading these, they might help FAQ731-376

http://eng-tips.com/market.cfm?

SomptingGuy · Jun 27, 2019

If you are doing loops, bear in mind two things:

1) Pre-allocate your array (Greg's first line). Never grow it.
2) Realise that the neat and satisfying one-liners (vectorized solutions) don't have as much advantage over loops these days.

Steve

IRstuff · Jun 27, 2019

I'm doing it with FOR loop but it only returns the final column values.

This isn't making sense; there are no intermediate values.

TTFN (ta ta for now)
I can do absolutely anything. I'm an expert!

https://www.youtube.com/watch?v=BKorP55Aqvg

faq731-376 forum1529 Entire Forum list

http://www.eng-tips.com/forumlist.cfm

GregLocock · Jun 27, 2019

Incidentally i wrote that on the fly, I think there is a +1 missing in there somewhere.

Cheers

Greg Locock

New here? Try reading these, they might help FAQ731-376

http://eng-tips.com/market.cfm?

Tek-Tips is the largest IT community on the Internet today!

Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!

Matlab for loop

mechMH

Mechanical

GregLocock

Automotive

SomptingGuy

Automotive

IRstuff

Aerospace

GregLocock

Automotive

Similar threads

Part and Inventory Search

Sponsor