I already have a row matrix, how to change it's dimensions to 5x5 for example?
1 view (last 30 days)
Show older comments
Francisco Boudagh
on 26 Apr 2021
Commented: Francisco Boudagh
on 26 Apr 2021
So this is how it is right now. My matrix A = num(idx) is a row matrix. How can I change it's dimensions to 5x5?
2 Comments
Accepted Answer
Walter Roberson
on 26 Apr 2021
It looks like you are not being asked to draw the primes between 1 and 100; it looks like you are asked to draw the first 100 primes.
num = 1:600;
idx = isprime(num);
A = num(idx);
if length(A) > 100; A = A(1:100); end
A = reshape(A, 10, 10);
imagesc(A)
colorbar
axis equal tight;
A(end)
However, there is a completely different possibility:
num = reshape(1 : 100, 10, 10);
idx = isprime(num);
imagesc(idx)
More Answers (0)
See Also
Categories
Find more on 2-D and 3-D Plots 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!