How do I add these two variables? i keep on getting an error.

function AddButtonPushed(app, event)
x =app.Input1.Value;
y =app.Input2.Value;
app.Output.Value = addition(x, y);
end

Error Message I receive

Error using matlab.ui.control.EditField/set.Value

'Value' must be a character vector or a string scalar.

Error using EngrMaeFinal/AddButtonPushed

Undefined function 'addition' for input arguments of type 'double'.

Answer 1

[dpb]

We don't know enough to be complete, but assuming the two input values are numeric, then

function AddButtonPushed(app, event)
  x =app.Input1.Value;
  y =app.Input2.Value;
  app.Output.Value = string(x+y);
end

However, it's quite possible (likely?) you'll need to do a str2double() on the two input values that are also going to be char data in the control.

So, guessing, the function probably ought to look more like

function AddButtonPushed(app, event)
  x=str2double(app.Input1.Value);
  y=str2double(app.Input2.Value);
  app.Output.Value = string(x+y);
end

[Abraham]

+++ I tried implenting your code and it doesnt work out either.

My two inputs are numeric. I am trying to add input1 to input2 and have it appear in the Output box. I am having trouble with my third line of where i cannot add my input1 and input2 because i get an error. Ive tried using the sum operator but i get an error message as well. I dont know the proper operator to add my two inputs.

*** I also get value must be a double scalar error

% Button pushed function: AddButton

function AddButtonPushed(app, event)

x=app.Input1.Value;

y=app.Input2.Value;

app.Output= addition(x,y);

end

Error message

Unrecognized function or variable 'addition'.

Error in EngrMaeFinal/AddButtonPushed (line 26)

app.OutputEditField.Value = addition(x,y);

Error in matlab.apps.AppBase>@(source,event)executeCallback(ams,app,callback,requiresEventData,event) (line 62)

newCallback = @(source, event)executeCallback(ams, ...

Error while evaluating Button PrivateButtonPushedFcn.

[Walter Roberson]

addition is not a MATLAB function or a method of any Mathworks-provided class that I can find.

You will need to define your own addition function.