use the same result in different callback in matlab app desinger

hello,

I am problem that i solved using the app desiner in two step calculation but the second calculation depend on the first one each of them in edit field numeric

so how can I callback the first numeric field value to the calculation of second nuemric field

for example

a=5

b=6

c=5

x1=a*b; % this is in the first nuemricafield.value

then in second numerical field

x2=x1^c in second nuemric field

so how can i express the x1 value of first numerica field in app desinger

Thank u

Answer 1

[Voss]

Let's say the first NumericEditField is called EditField1 and the second one is called EditField2, and their ValueChangedFcns are called ValueChangedFcn_EditField1 and ValueChangedFcn_EditField2, respectively.

In general, you can get or set any NumericEditField's value wherever you need to by referring to app.EditField1.Value or app.EditField2.Value (or whatever they are called in your app).

So, in this situation, in the second NumericEditField's ValueChangedFcn, you can get the value of the first NumericEditField:

function ValueChangedFcn_EditField2(app,evt)
    x1 = app.EditField1.Value;
    % now do whatever you need to do with x1
end

And you also might update EditField2's Value whenever EditField1's Value changes:

function ValueChangedFcn_EditField1(app,evt)
    x1 = app.EditField1.Value;
    c = 5;
    x2 = x1^c;
    % set EditField2's Value to x2:
    app.EditField2.Value = x2;
end

[Abdulrahman Mohamed]

i tried that but did not work

[Voss]

How did it not work? Did you get an error message? Did the app just not appear to update?

[Abdulrahman Mohamed]

the app doesnot change the numeric value of second editfield

it is still zero

[Abdulrahman Mohamed]

also both of editfield value depends on 2 scroll down

[Abdulrahman Mohamed]

it is working now thank u very much

[Voss]

Take a look at the attached .mlapp file. In that app, when EditField1 changes, EditField2's Value is set to the fifth power of EditField1's Value; when EditField2's Value changes, nothing else changes.

Try to compare the relevant parts of your app wth this app and see if there is anything different between the two that might explain why your app doesn't seem to update when it should.

If that doesn't work, can you attach your .mlapp file (and I'll take a look at it)?