MATLAB: It is about showing certain x and y axis of image

image processing

My question is about image processing toolbox of MATLAB .. my project is of braille reading demonstration through it .. i wanted to ask how should i show certain x and y axis of image when the user enters the alphabet ?? for example: user enters alphabet "a" then i want to show the x and y coordinates of braille pattern image in which pattern of alphabet "a" are located please help me out ASAP Regards, Ahad Mahmood

Best Answer

After you call imshow, call axis on:

imshow(yourImage, []);
axis on; % Display x and y axes with tickmarks and labels.

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MATLAB: The function that I created won’t be called

From the error message you showed, on line 4 of eegamplitude you're calling relaxed with 0 input arguments and 1 output argument.

Let's look at the definition of relaxed.

%relaxed function
function relaxed

This function is defined to accept a maximum of 0 input arguments and return a maximum of 0 output arguments.

See the section "Syntax for Function Definition" on this documentation page for instructions on how to define a function that returns output arguments. Or, if relaxed is supposed to not return any output arguments, remove the output argument from your call to relaxed on line 4 of eegamplitude.

MATLAB: Help me with Input from keyboard

Here are my number input snippets. Feel free to modify/adapt:

% Ask user for one integer number.
defaultValue = 45;
titleBar = 'Enter a value';
userPrompt = 'Enter the integer';
caUserInput = inputdlg(userPrompt, titleBar, 1, {num2str(defaultValue)});
if isempty(caUserInput),return,end; % Bail out if they clicked Cancel.

% Round to nearest integer in case they entered a floating point number.
integerValue = round(str2double(cell2mat(caUserInput)));
% Check for a valid integer.
if isnan(integerValue)
    % They didn't enter a number.  

    % They clicked Cancel, or entered a character, symbols, or something else not allowed.

    integerValue = defaultValue;
    message = sprintf('I said it had to be an integer.\nI will use %d and continue.', integerValue);
    uiwait(warndlg(message));
end
% Ask user for two floating point numbers.
defaultValue = {'45.67', '78.91'};
titleBar = 'Enter a value';
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 for a valid number.
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.\nI will use %.2f and continue.', usersValue1);
    uiwait(warndlg(message));
end

Best Answer

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MATLAB: The function that I created won’t be called

MATLAB: Help me with Input from keyboard

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