fn=['D:/code name of dataset/A' num2str(n) '_' num2str(m) '_' num2str(q) '.bmp']; In this command error shows that is unexpected Matlab expression so how remove this error?

fn=['D:/code name of dataset/A' num2str(n) '_' num2str(m) '_' num2str(q) '.bmp'];

[Ced]

Assuming you have defined n,m, and q, there is nothing wrong with this line of code.

Just copy paste this in your command window:

n = 1; m = 1; q = 1;
fn=['D:/my_dataset/A' num2str(n) '_' num2str(m) '_' num2str(q) '.bmp'];

You might want to use sprintf though, i.e.

fn = sprintf('D:/%s/A%i_%i_%i.bmp', datasetname, n, m, q);

where datasetname is a string, and n,m,q are integers

Answer 1

[Azzi Abdelmalek]

n=5
m=4
q=1
out=['D:/code name of dataset/A' num2str(n) '_' num2str(m) '_' num2str(q) '.bmp']

The code works fine, you probably missed a space like :

out=['D:/code name of dataset/A'num2str(n) '_' num2str(m) '_' num2str(q) '.bmp']