convert alphabets to morse code

I have a GUI with a input text box for alphabets and a push button for the alphabets to convert into morse codes. I tried but it shows errors and the result wont show up in the output text box, can someone help me?

[Walter Roberson]

What error message shows up? ... for which code?

Answer 1

[Walter Roberson]

letter=get(hObject,'string');
handles.letter=letter;

You are not storing the handle in handles.letter you are storing the string.

word = char(get(handles.Letter, 'String'));

but here you expect it to be a handle not a string.

Also be careful on Letter compared to letter . MATLAB is case sensitive for this purpose.

[Pablo Le]

So what should I do now?

[Pablo Le]

Sorry cuz I’m not really good in Matlab still learning😅

[Walter Roberson]

word = char(handles.letter)

[Pablo Le]

alright i changed that, now it shows these error:

The class handle has no Constant property or Static method named 'letter'.

Error in MORSE>pushbutton1_Callback (line 117)

set(handle.letter, 'String', wordtomorse);

Error in gui_mainfcn (line 95)

feval(varargin{:});

Error in MORSE (line 42)

gui_mainfcn(gui_State, varargin{:});

Error in matlab.graphics.internal.figfile.FigFile/read>@(hObject,eventdata)MORSE('pushbutton1_Callback',hObject,eventdata,guidata(hObject))

Error while evaluating UIControl Callback.

[Walter Roberson]

Okay... but I recommend you think more about the user interaction. What you are asking for is that the user types in something in English into an edit field, and that when they push the button, that the English is converted into Morse code, and that the Morse code is output over top of what they typed in English -- the input and output are the same field. I recommend that you separate the input and output fields.

% Begin initialization code - DO NOT EDIT
gui_Singleton = 1;
gui_State = struct('gui_Name',       mfilename, ...
                   'gui_Singleton',  gui_Singleton, ...
                   'gui_OpeningFcn', @MORSE_OpeningFcn, ...
                   'gui_OutputFcn',  @MORSE_OutputFcn, ...
                   'gui_LayoutFcn',  [] , ...
                   'gui_Callback',   []);
if nargin && ischar(varargin{1})
    gui_State.gui_Callback = str2func(varargin{1});
end

if nargout
    [varargout{1:nargout}] = gui_mainfcn(gui_State, varargin{:});
else
    gui_mainfcn(gui_State, varargin{:});
end
% End initialization code - DO NOT EDIT


% --- Executes just before MORSE is made visible.
function MORSE_OpeningFcn(hObject, eventdata, handles, varargin)
% This function has no output args, see OutputFcn.
% hObject    handle to figure
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
% varargin   command line arguments to MORSE (see VARARGIN)

% Choose default command line output for MORSE
handles.output = hObject;

% Update handles structure
guidata(hObject, handles);

% UIWAIT makes MORSE wait for user response (see UIRESUME)
% uiwait(handles.figure1);


% --- Outputs from this function are returned to the command line.
function varargout = MORSE_OutputFcn(hObject, eventdata, handles) 
% varargout  cell array for returning output args (see VARARGOUT);
% hObject    handle to figure
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

% Get default command line output from handles structure
varargout{1} = handles.output;



function input_english_Callback(hObject, eventdata, handles)
% hObject    handle to input_english (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

% Hints: get(hObject,'String') returns contents of input_english as text
%        str2double(get(hObject,'String')) returns contents of input_english as a double
handles.letter = hObject;
guidata(hObject,handles);

% --- Executes during object creation, after setting all properties.
function input_english_CreateFcn(hObject, eventdata, handles)
% hObject    handle to input_english (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    empty - handles not created until after all CreateFcns called

% Hint: edit controls usually have a white background on Windows.
%       See ISPC and COMPUTER.
if ispc && isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor'))
    set(hObject,'BackgroundColor','white');
end


% --- Executes on button press in pushbutton1.
function pushbutton1_Callback(hObject, eventdata, handles)
% hObject    handle to pushbutton1 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
word = char(get(handles.letter, 'String'));
wordtomorse = ' ';
morse={'.-','-...','-.-.','-..','.','..-.','--.','....','..','.---','-.-','.-..','--','-.','---','.--.','--.-','.-.','...','-','..-','...-','.--','-..-','-.--','--..','.-.-.-'}; 
letter={'A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P','Q','R','S','T','U','V','W','X','Y','Z','Stop'};
for k=1:length(word)
    character = word(k);
    [~, idx] = ismember(character, letter);
    if ~isempty(idx)
        wordtomorse = [wordtomorse ' ' morse(idx)];
    end
end
set(handle.letter, 'String', wordtomorse);


function output_morse_Callback(hObject, eventdata, handles)
% hObject    handle to output_morse (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

% Hints: get(hObject,'String') returns contents of output_morse as text
%        str2double(get(hObject,'String')) returns contents of output_morse as a double



% --- Executes during object creation, after setting all properties.
function output_morse_CreateFcn(hObject, eventdata, handles)
% hObject    handle to output_morse (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    empty - handles not created until after all CreateFcns called

% Hint: edit controls usually have a white background on Windows.
%       See ISPC and COMPUTER.
if ispc && isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor'))
    set(hObject,'BackgroundColor','white');
end

[Pablo Le]

Yes i manage to convert the english word to morse but what you said is correct, the output is showing in the same textbox as the input. thanks for all the help