Add Percentage to the Bars in Tornado Plot

How to add the percentage of how much each value decrease and increase in the bars in Tornado plot like in this picture?

here is my code:

% Input data

Data = [

0.983 0.955 0.935;

1.006 0.955 0.920;

0.897 0.955 1.014;

1.026 0.955 0.906;

0.892 0.955 1.038;

1.058 0.955 0.888;

1.059 0.955 0.887

];

% Calculate the differences between low, base, and high values

diff_low = Data(:, 1) - Data(:, 2);

diff_high = Data(:, 3) - Data(:, 2);

% Plot tornado plot

figure;

barh([diff_low, diff_high], 'stacked');

set(gca, 'YTickLabel', {'', '1', '2', '3', '4', '5', '6' , '7'});

xlabel('% Change to LCOW from Base Case (0.955 $/m^{3})');

%ylabel('Data Point');

title('Sensitivity Analysis of CSP-RO');

legend('Decrease Cost', 'Increase Cost');

% Display grid

grid on;

% Customize axis labels

set(gca, 'YTick', 1:7);

yticklabels({'DNI, W/m² (-20%, 755, +20%)', 'Membrane lifetime, yr (-20%, 5, +20%)', 'IRR, % (-20%, 5, +20%)', 'Operating hours, hr/day (-20%, 6, +20%)', 'Seawater salinity, g/m³ (-20%, 45, +20%)', 'Plant lifetime, yr (-20%, 20, +20%)', 'Plant capacity, m³/dy (-20%, 3500, +20%)'});

Answer 1

[atharva]

Hey Nassar,

I understand that you want to add percentage labels to the bars in tornado plot in MATLAB.

Try the following code-

% Input data
Data = [
    0.983 0.955 0.935;
    1.006 0.955 0.920;
    0.897 0.955 1.014;
    1.026 0.955 0.906;
    0.892 0.955 1.038;
    1.058 0.955 0.888;
    1.059 0.955 0.887
];

% Calculate the differences between low, base, and high values
diff_low = Data(:, 1) - Data(:, 2);
diff_high = Data(:, 3) - Data(:, 2);

% Calculate the percentage change for each value
percent_change_low = (diff_low ./ Data(:, 2)) * 100;
percent_change_high = (diff_high ./ Data(:, 2)) * 100;

% Plot tornado plot
figure;
h = barh([diff_low, diff_high], 'stacked');
set(gca, 'YTickLabel', {'', '1', '2', '3', '4', '5', '6', '7'});
xlabel('% Change to LCOW from Base Case (0.955 $/m^{3})');
title('Sensitivity Analysis of CSP-RO');
legend('Decrease Cost', 'Increase Cost');
grid on;

% Customize axis labels
set(gca, 'YTick', 1:7);
yticklabels({'DNI, W/m² (-20%, 755, +20%)', 'Membrane lifetime, yr (-20%, 5, +20%)', 'IRR, % (-20%, 5, +20%)', 'Operating hours, hr/day (-20%, 6, +20%)', 'Seawater salinity, g/m³ (-20%, 45, +20%)', 'Plant lifetime, yr (-20%, 20, +20%)', 'Plant capacity, m³/dy (-20%, 3500, +20%)'});

% Add percentage labels to both sides of the bars
xpos = [diff_low, diff_high];
ypos = 1:7;
labels = arrayfun(@(value) sprintf('%.2f%%', value), [percent_change_low], 'UniformOutput', false);

for i = 1:7
    text(xpos(i), ypos(i), labels{i}, 'HorizontalAlignment', 'center', 'VerticalAlignment', 'bottom', 'Color', 'k');
end

xpos = [diff_high, diff_low];
ypos = 1:7;
labels = arrayfun(@(value) sprintf('%.2f%%', value), [percent_change_high], 'UniformOutput', false);

for i = 1:7
    text(xpos(i), ypos(i), labels{i}, 'HorizontalAlignment', 'center', 'VerticalAlignment', 'bottom', 'Color', 'k');
end

I hope this helps!

[Nassar AlMarry]

Thank you so much atharva