Input a set of values in a form of table

I want to create a program that will plot curves based on X and Y values that an user inputs. But I am stuck at the very first step. How to make a program offer you a table with two columns in order to input values for x and y. Thank you in advance!

Answer 1

[Ayush]

Hi,

To create a program that allows users to input values for X and Y in a table format, you can utilize the “uifigure” and “uitable” functions. The “uifigure” function creates a figure window for app design, while the “uitable” function generates a table UI component within this window, allowing users to directly enter their data. Refer to an example code below for a better understanding:

function plotInputData
    % Create a figure window
    fig = uifigure('Name', 'Input X and Y Values', 'Position', [100 100 400 300]);

    % Create a table with two columns for X and Y
    data = cell(10, 2); % Preallocate for 10 rows
    t = uitable(fig, 'Data', data, 'ColumnName', {'X', 'Y'}, ...
                'ColumnEditable', [true true], 'Position', [25 75 350 200]);

    % Create a button to plot the data
    uibutton(fig, 'push', 'Text', 'Plot', ...
             'Position', [150 30 100 30], ...
             'ButtonPushedFcn', @(btn,event) plotData(t));

    % Callback function to plot data
    function plotData(table)
        % Retrieve data from the table
        data = table.Data;
        % Convert cell array to numerical array, ignoring empty cells
        x = cellfun(@(x) str2double(x), data(:,1), 'UniformOutput', false);
        y = cellfun(@(y) str2double(y), data(:,2), 'UniformOutput', false);

        % Remove any NaN values resulting from empty cells
        x = cell2mat(x(~cellfun('isempty', x)));
        y = cell2mat(y(~cellfun('isempty', y)));

        % Plot the data
        figure;
        plot(x, y, '-o');
        xlabel('X');
        ylabel('Y');
        title('User Input Data');
        grid on;
    end
end

For more information on the “uifigure” and “uitable” functions refer to below documentations:

• “uifigure”: https://www.mathworks.com/help/matlab/ref/uifigure.html
• “uitable” : https://www.mathworks.com/help/matlab/ref/uitable.html