how can i validate in my code if a user inputs non numeric values? how can i limit just for 4 values?

this code request four values separated by comma

for vgauss=1:x
    prompt={'Ingrese los valores del gaussiano separados por comas: '};
    b = inputdlg(prompt,'Gaussiano', [1 50]);
    w=b{1,1};
    EnChar{1,vgauss}=w;
    data{1,vgauss}=str2double(regexp(w,'\d*','match')');
    handles.data=data; %estos son los gaussianos [...]
    handles.CharGauss=EnChar;
end

Answer 1

[Mohammad Abouali]

use validateattributes.

You can check for both type and size.