How to get integer data using inputdlg,, or using any other way?

Hi Everyone, I am using the following command to get data using dialog box.

prompt={'Enter Lowest Energy'};

dlg_title='Input';

lowest_energy1=inputdlg(prompt,dlg_title);

disp(lowest_energy1);

In this I am giving the decimal value as an input. but i can't use it as a decimal value. the value of lowest_energy1= '1'(if i write 1 in the dialogue box).

that can not be used as decimal value. Kindly help me in this regard. Thanks in anticipation :)

Answer 1

[Image Analyst]

Here's a way to force the user to enter an integer:

% Ask user for a 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

[Talha Khan]

Thanks a lot dear :)

[Talha Khan]

And what if i want to force the user to enter a floating value?

[Image Analyst]

Here's my snippet for that. Adapt as needed:

% 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

[Talha Khan]

Thanks a lot #image Analyst