MATLAB Answers

how to call the vector from the work space

2 views (last 30 days)
RAVI
RAVI on 25 Aug 2019
Commented: RAVI on 26 Aug 2019
suppose, data = [15 2 7 16 16]; and there are 16 different files in the workspace how to call it according to the 'data' vector in bunch of five(as sequence shown in data vector)

  2 Comments

Walter Roberson
Walter Roberson on 25 Aug 2019
"and there are 16 different files in the workspace"
Please expand on that. Files can be on disk, but only variables can be in a workspace.
RAVI
RAVI on 25 Aug 2019
files is on the workspace named M1,M2,M3,M4.......upto...M16.....i have to call it according to 'data' vector.

Sign in to comment.

Accepted Answer

Walter Roberson
Walter Roberson on 25 Aug 2019
MS = {M1, M2, M3, M4, M5, M6, M7, M8, M9, M10, M11, M12, M13, M14, M15, M16};
MS(data)
The result will be a 1 x 5 cell array that you would typically use {} indexing to access the contents of.
This code does not assume that the M variables are the same size or are the same data type.
In the case that the M variables are the same size and are a numeric data type, then there are other possibilities, such as
nd = ndims(M1);
MS = cat(nd+1, M1, M2, M3, M4, M5, M6, M7, M8, M9, M10, M11, M12, M13, M14, M15, M16);
idx = [repmat({':'}, 1, nd), {data}];
MS(idx{:})
This would in this special case give you a numeric array that is one dimension higher than your original arrays, with the extra dimension corresponding to the entries in data. For example if your M variables are all 1024 x 768 x 3 RGB images, then MS would be 1024 x 768 x 3 x 16 and the indexed version would be 1024 x 768 x 3 x 5

  1 Comment

RAVI
RAVI on 26 Aug 2019
thanks a lot....it's really helps....god bless you

Sign in to comment.

More Answers (0)

Tags


Translated by