MATLAB: Accessing and editing workspace values in matlab code

Question

I need to search a variable in workspace and edit its value at some specific index. How do i access, edit that variable and save new value back to workspace. Thanks,

Answer 1

You code looks correct so far (little typo in the assignin command, it must be array instead of arraya). But I think this should be faster since you have to copy one value only:

function test(mystruct)
for i=1:1
    assignin('base','tmp',mystruct(i).value)
    cmd_string = [mystruct(i).name,'(',num2str(mystruct(i).rowIndex),',',num2str(mystruct(i).colIndex),')=tmp;clear tmp'];
    evalin('base',cmd_string)
end
end

I tested it with:

    a = [1 2 3 4]
    mystruct.name = 'a'
    mystruct.rowIndex = 1;
    mystruct.colIndex = 1;
    mystruct.value = 14;
    test(mystruct)