How can I fill an array with varying input dimensions and data type change?

Hello,

So I'm getting an input as an array of numbers:

Generator = [3111 3112 3112 3112].'

The last number of each row is asociated to a different number of variables with different names:

mod1 = {'\Delta \omega' '\Delta \delta'} % for 1
mod2 = {'\Delta\psi_g' '\Delta v_2' '\Delta G_t'} % for 2

I want to create a vector/ matrix which contains the set of variables, so i.e. 1 2 2 2:

v = ['\Delta \omega' '\Delta \delta' '\Delta\psi_g' '\Delta v_2' '\Delta G_t' '\Delta\psi_g' '\Delta v_2' '\Delta G_t' '\Delta\psi_g' '\Delta v_2' '\Delta G_t']

to then use them as indexing of the x-axis of a bar-plot.

The input from the generator might change, for each itteration I want to add more variables to my vector. How do I do this?

statevar = [].'
for i=1:length(Generator)
    k= num2str(Generator(i))
    j = str2num(k(4))
    switch j
        case 1
           statevar(i) = 1 % =mod1 : how can I directly insert my variables names?
        case 2
            statevar(i) = 2 % =mod2  : how can I directly insert my variables names?
    end
  
end

Answer 1

[Shubham Gupta]

Try this:

last_digit_vec = mod(Generator,10);
v = {};
for i = 1:length(Generator)
    v = [v,eval(['mod',num2str(last_digit_vec(i))])];
end

Hope it helps !

[Shubham Gupta]

There is one more efficient way that doesn't involve for loop :

master_mod = {mod1,mod2};
last_digit_vec = mod(Generator,10);
v = [master_mod{last_digit_vec}];

Both should give the same result.

[Salome Hohl]

Thanks a lot! Both a working perfectly!