CODEWITHSUNDEEP
matlab
srk_cb
srk_cb

Reputation: 257

How to access and modify values of variables in matlab workspace?

There are few variables in my matlab workspace, lets say a and b. eg: a = 1:5; b = 1:10;

I used who to get their names.

like listVariables = who;

now listVariables has the variable names a and b, but i dont know how to access their values so that I can do some mathematical operations on them.

Upvotes: 1

Views: 87

Answers (1)

Rotem
Rotem

Reputation: 32084

It looks like evalin is what your are searching for: 

a_val = evalin('base', listVariables{1});
b_val = evalin('base', listVariables{2});

The advantage of evalin is that it can be executed from a function (out of the scope of the workspace).

Example:

In workspace: 

a = 1:5; b = 1:10;

Content of my_fun.m: 

function my_fun()

listVariables = evalin('base', 'who');

a_val = evalin('base', listVariables{1});
b_val = evalin('base', listVariables{2});

display(a_val);
display(b_val);

Result of my_fun() execution: 

a_val =

     1     2     3     4     5


b_val =

     1     2     3     4     5     6     7     8     9    10

Note: there are cases in which evalin is useful, but it's not a good coding practice.

Upvotes: 1

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