How can I transfer data from an UItable to de app code? in order to use that data for another calculus

Hi, I created an UI table on the app I'm coding but I'm having multiple issues. I want to plot that data, also use it for another calculus and I want to launch warning messages when wrong data is given by the user, but when I run the app it shows no errors but does nothing with the data I gave it, I'm suspecting I need tu use the "catch" command but I'm not sure, and I a don't know how to use it either. I'll attatch code and picture. Thx.

global tabla
            tabla=app.UITable.Data;
            h=cell2mat(tabla(:,1))
            tP=cell2mat(tabla(:,2))
            tT=cell2mat(tabla(:,3))

            Knob=app.Knob.Value;
            switch Knob
                case 'Q vs t (parciales)'
                plot(app.UIAxes,h,tP) 
            end
            
switch true
                case tabla < 0
                f=warndlg('Tanto las alturas (cm) como los tiempos (s) deben ser mayores a 0')
end 

Answer 1

[Amal Raj]

Hi Giulia

global tabla
tabla = app.UITable.Data;
h = cell2mat(tabla(:,1));
tP = cell2mat(tabla(:,2));
tT = cell2mat(tabla(:,3));

if any(tabla < 0)
    f = warndlg('Tanto las alturas (cm) como los tiempos (s) deben ser mayores a 0');
end

if strcmp(app.Knob.Value, 'Q vs t (parciales)')
    plot(app.UIAxes, h, tP);
end

I replaced the switch statement with an if statement that checks if the 'Knob' variable equals a specific value. I also used the 'any' function to check if any element of 'tabla' is less than zero in the second switch statement.

[Giulia Di Giorgio]

thank you!