How can I merge 3 matrices into one and skip some variables?
1 view (last 30 days)
Show older comments
I have 3 matrices(size 178x1) and I want to merge them into 1 matrix BUT I want to skip rows numbered 48 to 59 and 108 to 130. Seems my code isn't doing the work.
for i=1:178
if i==49
i=60
end
if i==108
i=131
end
Wines=[TotalPhelons(:,i), Flavanoids(:,i), NonflavanoidPhenols(:,i)];
end
What I get is a matrix 178x3. And I get this error :
Index exceeds matrix dimensions. Error in ThirdStep (line 15) Wines=[TotalPhelons(:,i), Flavanoids(:,i), NonflavanoidPhenols(:,i)];
EDIT: I want the new matrix to have 3 collumns (each collumn for each matrix)
1 Comment
Stephen23
on 16 Jan 2017
Edited: Stephen23
on 16 Jan 2017
It is not possible to use that syntax to "skip" loop iterations. If you wish to use a for loop and "skip" iterations then you need to specify this as the for loop input:
for k = [1:47,60:107,131:178]
...
end
Note that this will still not give you what you want, because the output matrix will be indexed at the same rows as the input matrix, and so will be the same size (it will fill the intermediate rows with zeros). You could loop over a separate vector of indices... but really the best solution is to forget about ugly loops and learn to write efficient MATLAB code without loops.
Accepted Answer
More Answers (0)
See Also
Categories
Find more on Matrix Indexing 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!