Test Disappear from Chart

Hello everyone

Kindly I am facing an Issue with Matlab trying to print a Chart but that one when I write a text in Xlabel as a one line it works fine but if I add new line it Disappear

As you can see in this chart its one line but this line is long so I need to add new line and when I add new Line one of these text diappear as in below

You can see when I added new Line the Text on the left diapeared

I am using this for the one line:

x_labels{cat_indices(max_accuracy_index)} = [cat, ' - Method: ', method{cat_indices(max_accuracy_index)}, ' Accuracy: ', num2str(max_accuracy), ' Time: ', num2str(time_period(cat_indices(max_accuracy_index)))];

when I added new line I used this:

x_labels{cat_indices(max_accuracy_index)} = sprintf('%s - Method: %s\nAccuracy: %.2f Time: %.2f', cat, method{cat_indices(max_accuracy_index)}, max_accuracy, time_period(cat_indices(max_accuracy_index)));

This causing one text disapearing, I tried to change the Figure size but it doesn't work

figure('Position', [100, 100, 1000, 600]);

and I even change it to

figure('Position', [100, 100, 2000, 600]);

but still no change

I hope if someone experienced such thing could help me

Answer 1

[Voss]

Try using '\\newline' instead of '\n' in sprintf:

cat = 'Final Bump Road Obstacle';
method = {'WaveletScattering and SVM Tuned RFE'};
cat_indices = 1;
max_accuracy_index = 1;
max_accuracy = 100;
time_period = 70;

x_labels{cat_indices(max_accuracy_index)} = sprintf('%s - Method: %s\\newlineAccuracy: %.2f Time: %.2f', cat, method{cat_indices(max_accuracy_index)}, max_accuracy, time_period(cat_indices(max_accuracy_index)));

x_labels = 1×1 cell array
    {'Final Bump Road Obstacle - Method: WaveletScattering and SVM Tuned RFE\newlineAccuracy: 100.00 Time: 70.00'}

figure('Position',[10 10 1000 500])
plot(1:10)
xticks(1:2:10)
xticklabels(x_labels(ones(1,numel(xticks())))) % repeating the same label 5 times

Reference: https://www.mathworks.com/matlabcentral/answers/101922-how-do-i-create-a-multi-line-tick-label-for-a-figure-using-matlab-7-10-r2010a#answer_445691

[Yousif Alaraji]

I have tried but it keeps same issue

[Voss]

When you say, "it keeps same issue", same as what? Same as the version with '\n'?

What version of MATLAB are you using? '\\newline' may not work in older versions, although I've tested it in R2017b and R2022a as well as R2023b (i.e., in this forum) and it works in all of those versions.

Here's another demo to show that it works, at least in 2023b.

cat = 'Final Bump Road Obstacle';
method = {'WaveletScattering and SVM Tuned RFE'};
cat_indices = 1;
max_accuracy_index = 1;
max_accuracy = 100;
time_period = 70;

First, let me show your one-line version:

x_labels{cat_indices(max_accuracy_index)} = [cat, ' - Method: ', method{cat_indices(max_accuracy_index)}, ' Accuracy: ', num2str(max_accuracy), ' Time: ', num2str(time_period(cat_indices(max_accuracy_index)))]

x_labels = 1×1 cell array
    {'Final Bump Road Obstacle - Method: WaveletScattering and SVM Tuned RFE Accuracy: 100 Time: 70'}

figure('Position',[10 10 1000 500])
plot(1:10)
xticks(1:2:10)
xticklabels(x_labels(ones(1,numel(xticks())))) % repeating the same label 5 times

And your two-line version with '\n':

x_labels{cat_indices(max_accuracy_index)} = sprintf('%s - Method: %s\nAccuracy: %.2f Time: %.2f', cat, method{cat_indices(max_accuracy_index)}, max_accuracy, time_period(cat_indices(max_accuracy_index)))

x_labels = 1×1 cell array
    {'Final Bump Road Obstacle - Method: WaveletScattering and SVM Tuned RFE↵Accuracy: 100.00 Time: 70.00'}

figure('Position',[10 10 1000 500])
plot(1:10)
xticks(1:2:10)
xticklabels(x_labels(ones(1,numel(xticks())))) % repeating the same label 5 times

You can see that neither of those provide the desired result.

Now, my proposed solution ('\\newline'):

x_labels{cat_indices(max_accuracy_index)} = sprintf('%s - Method: %s\\newlineAccuracy: %.2f Time: %.2f', cat, method{cat_indices(max_accuracy_index)}, max_accuracy, time_period(cat_indices(max_accuracy_index)))

x_labels = 1×1 cell array
    {'Final Bump Road Obstacle - Method: WaveletScattering and SVM Tuned RFE\newlineAccuracy: 100.00 Time: 70.00'}

figure('Position',[10 10 1000 500])
plot(1:10)
xticks(1:2:10)
xticklabels(x_labels(ones(1,numel(xticks())))) % repeating the same label 5 times

Seems to do the correct thing: each x-tick label is split across two lines of text.

[Yousif Alaraji]

Hello Dear ,

Kindly i mean it kept same. means still the final bump diappearing...

I will provide you with the full code and the data in the attached so you could know what i went throw ,, my Matlab version is 2023b

Below is my code and the attached is my data

% Read the Excel file into a table

data = readtable('firsttest.xlsx');

% Access the data from the table

accuracy = str2double(data.Accuracy);

time_period = str2double(data.TimePeriod);

method = data.Method;

category = data.Category;

% Define categories

categories = unique(category);

% Create a grouped bar chart with a larger figure size

figure('Position', [10, 10, 1000, 500]);

% Define the width of the bars

barWidth = 0.4;

% Create a vector of indices for x-coordinates

x = 1:length(accuracy);

% Initialize custom labels for x-axis

x_labels = cell(1, length(x));

% Define custom colors for highlighting

highlight_color = [0, 0, 0]; % Black color for Accuracy highlight

highlight_color_yellow = [1, 1, 0]; % Yellow color for Time period highlight

% Create a cell array to store the highlighted data points

highlighted_data = cell(1, length(categories));

% Initialize legend entries with custom labels and colors

for i = 1:length(categories)

cat = categories{i}; % Get the current category as a string

cat_indices = find(strcmp(category, cat));

% Find the indices of points with the highest Accuracy for this category

max_accuracy = max(accuracy(cat_indices));

max_accuracy_indices = find(accuracy(cat_indices) == max_accuracy);

% Find the lowest Time period within the highest Accuracy group

if length(max_accuracy_indices) > 1

min_time_period = min(time_period(cat_indices(max_accuracy_indices)));

min_time_period_indices = find(time_period(cat_indices(max_accuracy_indices)) == min_time_period);

max_accuracy_index = max_accuracy_indices(min_time_period_indices);

else

max_accuracy_index = max_accuracy_indices;

end

% Create bars for Accuracy (in blue) for all data points in the category

bar(x(cat_indices), accuracy(cat_indices), barWidth, 'b', 'DisplayName', ['Accuracy: ' num2str(max_accuracy)]);

hold on;

% Create bars for Time period (in red) for all data points in the category with an offset

bar(x(cat_indices) + barWidth, time_period(cat_indices), barWidth, 'r', 'DisplayName', ['Time: ' num2str(time_period(cat_indices(max_accuracy_index)))]);

% Highlight the corresponding bars for all categories by changing their color

bar(x(cat_indices(max_accuracy_index)), accuracy(cat_indices(max_accuracy_index)), barWidth, 'FaceColor', highlight_color);

bar(x(cat_indices(max_accuracy_index)) + barWidth, time_period(cat_indices(max_accuracy_index)), barWidth, 'FaceColor', highlight_color_yellow);

% Create a custom label with HTML formatting for the whole sentence

x_labels{cat_indices(max_accuracy_index)} = [cat, ' - Method: ', method{cat_indices(max_accuracy_index)}, ' Accuracy: ', num2str(max_accuracy), ' Time: ', num2str(time_period(cat_indices(max_accuracy_index)))];

% Store the highlighted data points for this category

highlighted_data{i} = x_labels{cat_indices(max_accuracy_index)};

end

% Set x-tick locations

xticks(x);

% Rotate the x-axis labels to avoid overlap

xtickangle(45);

% Add the custom labels to the x-axis

ax = gca;

ax.XTickLabel = x_labels;

% Set axis labels and title

xlabel('Category - Method, Accuracy, Time Period');

ylabel('Value');

title('Comparison of Accuracy and Time Period for Different Methods in Categories');

% Customize the plot appearance

grid on;

% ...

% Create the legend with custom entries and colors

lgd = legend('Accuracy', 'Time Period', 'Accuracy (Best Method)', 'Time Period (Best Method)');

set(lgd, 'TextColor', 'black');

legend_colors = [0, 0, 1; 1, 0, 0; 0, 0, 0; 1, 1, 0]; % Blue, Red, Black, Yellow

legend_colors(legend_colors == 0) = 1;

set(lgd, 'Location', 'Best', 'AutoUpdate', 'off');

% Print the highlighted data points

for i = 1:numel(categories)

fprintf('Category %s: %s\n', categories{i}, highlighted_data{i});

end

% Optionally, save the chart as an image file

% saveas(gcf, 'grouped_bar_chart.png');

% Hold off to end the plotting

hold off;

[Voss]

Thank you for the data and code. The \\newline solution appears to work in this case as well: each xticklabel has text on two lines. Is this not the desired result?

% Read the Excel file into a table
data = readtable('firsttest.xlsx');

Warning: Column headers from the file were modified to make them valid MATLAB identifiers before creating variable names for the table. The original column headers are saved in the VariableDescriptions property.
Set 'VariableNamingRule' to 'preserve' to use the original column headers as table variable names.

% Access the data from the table
accuracy = str2double(data.Accuracy);
time_period = str2double(data.TimePeriod);
method = data.Method;
category = data.Category;
% Define categories
categories = unique(category);
% Create a grouped bar chart with a larger figure size
figure('Position', [10, 10, 1000, 500]);
% Define the width of the bars
barWidth = 0.4;
% Create a vector of indices for x-coordinates
x = 1:length(accuracy);
% Initialize custom labels for x-axis
x_labels = cell(1, length(x));
% Define custom colors for highlighting
highlight_color = [0, 0, 0]; % Black color for Accuracy highlight
highlight_color_yellow = [1, 1, 0]; % Yellow color for Time period highlight
% Create a cell array to store the highlighted data points
highlighted_data = cell(1, length(categories));
% Initialize legend entries with custom labels and colors
for i = 1:length(categories)
    cat = categories{i}; % Get the current category as a string
    cat_indices = find(strcmp(category, cat));
    % Find the indices of points with the highest Accuracy for this category
    max_accuracy = max(accuracy(cat_indices));
    max_accuracy_indices = find(accuracy(cat_indices) == max_accuracy);
    % Find the lowest Time period within the highest Accuracy group
    if length(max_accuracy_indices) > 1
        min_time_period = min(time_period(cat_indices(max_accuracy_indices)));
        min_time_period_indices = find(time_period(cat_indices(max_accuracy_indices)) == min_time_period);
        max_accuracy_index = max_accuracy_indices(min_time_period_indices);
    else
        max_accuracy_index = max_accuracy_indices;
    end
    % Create bars for Accuracy (in blue) for all data points in the category
    bar(x(cat_indices), accuracy(cat_indices), barWidth, 'b', 'DisplayName', ['Accuracy: ' num2str(max_accuracy)]);
    hold on;
    % Create bars for Time period (in red) for all data points in the category with an offset
    bar(x(cat_indices) + barWidth, time_period(cat_indices), barWidth, 'r', 'DisplayName', ['Time: ' num2str(time_period(cat_indices(max_accuracy_index)))]);
    % Highlight the corresponding bars for all categories by changing their color
    bar(x(cat_indices(max_accuracy_index)), accuracy(cat_indices(max_accuracy_index)), barWidth, 'FaceColor', highlight_color);
    bar(x(cat_indices(max_accuracy_index)) + barWidth, time_period(cat_indices(max_accuracy_index)), barWidth, 'FaceColor', highlight_color_yellow);
    
    
    % Create a custom label with HTML formatting for the whole sentence
    % x_labels{cat_indices(max_accuracy_index)} = [cat, ' - Method: ', method{cat_indices(max_accuracy_index)}, ' Accuracy: ', num2str(max_accuracy), ' Time: ', num2str(time_period(cat_indices(max_accuracy_index)))];
    x_labels{cat_indices(max_accuracy_index)} = sprintf('%s - Method: %s\\newlineAccuracy: %.2f Time: %.2f', cat, method{cat_indices(max_accuracy_index)}, max_accuracy, time_period(cat_indices(max_accuracy_index)));

    
    % Store the highlighted data points for this category
    highlighted_data{i} = x_labels{cat_indices(max_accuracy_index)};
end
% Set x-tick locations
xticks(x);
% Rotate the x-axis labels to avoid overlap
xtickangle(45);
% Add the custom labels to the x-axis
ax = gca;
ax.XTickLabel = x_labels;
% Set axis labels and title
xlabel('Category - Method, Accuracy, Time Period');
ylabel('Value');
title('Comparison of Accuracy and Time Period for Different Methods in Categories');
% Customize the plot appearance
grid on;
% ...
% Create the legend with custom entries and colors
lgd = legend('Accuracy', 'Time Period', 'Accuracy (Best Method)', 'Time Period (Best Method)');
set(lgd, 'TextColor', 'black');
legend_colors = [0, 0, 1; 1, 0, 0; 0, 0, 0; 1, 1, 0]; % Blue, Red, Black, Yellow
legend_colors(legend_colors == 0) = 1;
set(lgd, 'Location', 'Best', 'AutoUpdate', 'off');
% Print the highlighted data points
for i = 1:numel(categories)
    fprintf('Category %s: %s\n', categories{i}, highlighted_data{i});
end

Category Bump Obstacle: Bump Obstacle - Method: Wavelet SVM Tuned (RFE)\newlineAccuracy: 100.00 Time: 79.13
Category Grid Obstacle: Grid Obstacle - Method: Wavelet SVM Tuned (RFE)\newlineAccuracy: 100.00 Time: 72.46
Category Pothole Obstacle: Pothole Obstacle - Method: Wavelet SVM Tuned (RFE)\newlineAccuracy: 100.00 Time: 66.54
Category Sinewave Obstacle: Sinewave Obstacle - Method: Wavelet SVM Tuned (RFE)\newlineAccuracy: 100.00 Time: 69.48

% Optionally, save the chart as an image file
% saveas(gcf, 'grouped_bar_chart.png');
% Hold off to end the plotting
hold off;

[Yousif Alaraji]

Yes dear this is working now

Thank you so much

[Voss]

You're welcome! Any questions, let me know. Otherwise, please "Accept" this answer. Thanks!