# How to create a loop on matrix

1 view (last 30 days)
Vincent Ogonda on 13 Aug 2020
Commented: hosein Javan on 13 Aug 2020
Assuming you have a 4x10 matrix. How do you create a loop from the 2nd column of the matrix to the 10th column.

hosein Javan on 13 Aug 2020
Edited: hosein Javan on 13 Aug 2020
for example suppose we want to multiply each column by its coulmn number:
A =[
92 99 1 8 15 67 74 51 58 40
98 80 7 14 16 73 55 57 64 41
4 81 88 20 22 54 56 63 70 47
85 87 19 21 3 60 62 69 71 28
]
for it=2:10
A(:,it) = A(:,it)*it;
end
A
A =
92 198 3 32 75 402 518 408 522 400
98 160 21 56 80 438 385 456 576 410
4 162 264 80 110 324 392 504 630 470
85 174 57 84 15 360 434 552 639 280
##### 2 CommentsShowHide 1 older comment
hosein Javan on 13 Aug 2020
if I understant correctly.
C=1; B=2;
X = [380 250 220 200]
Y = C*X+B
plot(X,Y)

### Categories

Find more on Spreadsheets in Help Center and File Exchange

### Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!