MATLAB: GUI (static text display question)

drawnowguistatic text

    percentage_complete=(1-(mxn-i)/mxn)*100;
    if percentage_complete > 0 && percentage_complete < 25
        set(handles.sonar_sali ent_percentage,'string','0')
    elseif percentage_complete> 25 && percentage_complete < 50 
        set(handles.sonar_salient_percentage,'string','25')
    elseif percentage_complete > 50 && percentage_complete < 75
        set(handles.sonar_salient_percentage,'string','50')
    elseif percentage_complete > 75 && percentage_complete < 100
        set(handles.sonar_salient_percentage, 'string','75')
    else 
        set(handles.sonar_salient_percentage,'string','100')
    end

_________

Sorry not familiar with matlab coding.

I am trying to use static text in matlab GUI. i changed the tag to sonar_salient_percentage

and I want the static text to change in the GUI once a condition is met.

Right now the static text is not even updating? any idea what to do.

I am trying to display the percentage of completeness so i know when the code will finish running.

Best Answer

You have a space in this line:

set(handles.sonar_sali ent_percentage,'string','0')

but the main problem is that this is in a loop where things are probably changing so fast that the GUI doesn't get a chance to update/repaint/refresh. To force it to do that, put this line after your if block:

drawnow;

That will force it to change the static text immediately. If it were me, I'd do this:

percentage_complete = (1-(mxn-i)/mxn)*100;
caption = sprintf('Percent done = %.1f %%', percentage_complete);
set(handles.sonar_salient_percentage, 'String', caption);
drawnow;

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Siti - in your PB_M_Callback callback (which presumably converts the alphanumeric text to morse code), the code is

% --- Executes on button press in PB_M.

function PB_M_Callback(hObject, eventdata, handles)
% hObject    handle to PB_M (see GCBO)

% eventdata  reserved - to be defined in a future version of MATLAB

% handles    structure with handles and user data (see GUIDATA)

Letter=handles.Letter
morse={'.----','..---','...--','....-','.....','-....','--...','---..','----.','-----','.-','-...','-.-.','-..','.','..-.','--.','....','..','.---','-.-','.-..','--','-.','---','.--.','--.-','.-.','...','-','..-','...-','.--','-..-','-.--','--..','/'}; 
NumberOrLetter={'1','2','3','4','5','6','7','8','9','0','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',' '};
for i=1:length(Letter);
    [~, index] = ismember(Letter(i), NumberOrLetter);
    if index > 0
        set(handle.Morse,sprintf,'string');             
    end     
end

I suspect that the handles.Letter is the handle to the edit text control that the user types the alphanumeric string into. Is this the case? If true, and you want to get the string you (may) need to get the string value as handles.Letter is a handle). Once found, you will want to iterate over each character in the string and convert it to the morse code equivalent. The code

set(handle.Morse,sprintf,'string');

is incorrect - you need to specify the 'String' property before the value you want to assign to it, and sprintf is a built-in MATLAB function so I'm not sure what your intent is here.

I think you could do something like

% --- Executes on button press in PB_M.
function PB_M_Callback(hObject, eventdata, handles)
% hObject    handle to PB_M (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'));
wordToMorseCode = '';
morse={'.----','..---','...--','....-','.....','-....','--...','---..','----.','-----','.-','-...','-.-.','-..','.','..-.','--.','....','..','.---','-.-','.-..','--','-.','---','.--.','--.-','.-.','...','-','..-','...-','.--','-..-','-.--','--..','/'}; 
NumberOrLetter={'1','2','3','4','5','6','7','8','9','0','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',' '};
for k=1:length(word);
    character = word(k);
    [~, idx] = ismember(character, NumberOrLetter)
    if ~isempty(idx)
        wordToMorseCode = [wordToMorseCode ' ' morse(idx)];
    end
end
set(handle.Morse, 'String', wordToMorseCode);

I've haven't tested the above but i think that you get the idea. I am assuming that word can be an array of one or more characters...if it is only one character, then the code should still work. I'm also assuming that there is a 1-1 mapping in the NumberOrLetter array to morse array. So we iterate over each character in the word and check to see if it is a member of NumberOrLetter. If it is, then we append the morse code equivalent to the wordToMorseCode string. Once we have iterasted over each character, then we set this string to the handle.Morse control.

The code will be similar when converting from morse code to the alphanumeric characters...but you will need to be a bit more aware that there are multiple characters in a single morse code that needs to get mapped to a single alphanumeric character.

Best Answer

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