Advanced Matrices addition help
1 vue (au cours des 30 derniers jours)
Afficher commentaires plus anciens
Im trying to figure out how I can create a function that will take a row vector, say 3-x-n, and figure out how to add each element of its immediate neighbor,find the average and replace create a new matrix.
so if A=[ 1 2 0 1]
[]=avg#(A)
ans= 1.5 1 1 .5
can you help
1 commentaire
Image Analyst
le 11 Avr 2014
Duplicate version of question at : http://www.mathworks.com/matlabcentral/answers/125396-matrix-addition-and-means
Réponses (2)
John D'Errico
le 10 Avr 2014
(I'm not sure how a 3xn matrix is a row vector, by the way.)
Anyway, what have you tried? Surely this is trivial with a loop. If you really want to be efficient, then why not try conv? That is usually the trick to all of these problems. Take a shot at it.
3 commentaires
Image Analyst
le 11 Avr 2014
Joseph's "Answers" moved here since they're not answers to his original question, butt comments to John's answer:
yes, sorry, should have reread my question a 3xn is not a row vector, I meant to say I want the function file to work for a row vector as well as a 3xn. Ill try conv.
Thank you,
I dont think thats what I am looking for, I now I need a loop but Im not sure how to start. If i have a 2 x 2 like
a=[2 4 2 3]
the function needs to take (r1+(r1,c1)+(r2,c1)+(r2,c2)) the average them.
Image Analyst
le 11 Avr 2014
I gave your answer in the duplicate question:
sum_Of_a = conv2(a, ones(3), 'same')
count_in_window = conv2(ones(size(a)), ones(3), 'same')
theMean = sum_Of_a ./ count_in_window % Same as "output"
Voir également
Catégories
En savoir plus sur Logical dans Help Center et File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!