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a dropdown converter in matlab appdesign

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PA
PA on 4 Jul 2022
Commented: Image Analyst on 1 Sep 2022
How to create a drop down converter in appdesign
  10 Comments
PA
PA on 6 Jul 2022
thanks, i did but i have to adopt the strings on the same space and it get overwritten.
Image Analyst
Image Analyst on 1 Sep 2022
@AP - not sure what that means. What does it mean to "adopt" the strings? How does it get overwritten? Are you just reassigning the string to some static text label? Or do you have some other control on your figure that is covering up your string label?

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Answers (1)

Image Analyst
Image Analyst on 4 Jul 2022
Why not use App Designer? Why are you creating yoru GUI the hard way by creating some or all of your components programmatically in code?
Here's a snippet asking the user for two inputs (numbers) that you may want to adapt, like don't convert the second one to a number and leave it as a string.
% Ask user for two floating point numbers.
defaultValue = {'45.67', '78.91'};
titleBar = 'Enter values';
userPrompt = {'Enter floating point number 1 : ', 'Enter floating point number 2: '};
caUserInput = inputdlg(userPrompt, titleBar, 1, defaultValue);
if isempty(caUserInput),return,end % Bail out if they clicked Cancel.
% Convert to floating point from string.
usersValue1 = str2double(caUserInput{1})
usersValue2 = str2double(caUserInput{2})
% Check usersValue1 for validity.
if isnan(usersValue1)
% They didn't enter a number.
% They clicked Cancel, or entered a character, symbols, or something else not allowed.
% Convert the default from a string and stick that into usersValue1.
usersValue1 = str2double(defaultValue{1});
message = sprintf('I said it had to be a number.\nTry replacing the user.\nI will use %.2f and continue.', usersValue1);
uiwait(warndlg(message));
end
% Do the same for usersValue2
% Check usersValue2 for validity.
if isnan(usersValue2)
% They didn't enter a number.
% They clicked Cancel, or entered a character, symbols, or something else not allowed.
% Convert the default from a string and stick that into usersValue2.
usersValue2 = str2double(defaultValue{2});
message = sprintf('I said it had to be a number.\nTry replacing the user.\nI will use %.2f and continue.', usersValue2);
uiwait(warndlg(message));
end

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