Abdul - first, you didn't have to delete your previous question and repost. Just edit the existing one.
As for ccdf, are you using this https://www.mathworks.com/matlabcentral/fileexchange/33029-complementary-cumulative-distibution-function) from the File Exchange? I suspect that you are given that I observe the same error with some random input data. The problem is with the line
range=min(x):step:max(x);
in that min and max are returning multi-dimensional arrays rather than the presumably expected scalar values (see min for details on why it is behaving as it does). If you want the minimum or maximum across all elements in x, just replace the above line with
range=min(x(:)):step:max(x(:));
While this will prevent the error from occurring, I can't guarantee that it will provide you with the correct result.
