Plot legend in a bar graph

Hi all,

Can anyone please tell me how can I plot the average of the bar (values of Y) in the bar graph? It can be a legend, or can be a line parallel to X axis. I just need to show the average, that's all! I am using this simple code.

clear all; close all; clc;

hFig = figure(1);
Month = {'April'; 'May'; 'June'; 'July'; 'August'; 'September'; 'October'; 'November'; 'December';'January'; 'February'; 'March'; 'April'; 'May'; 'June'};
Money_Sent = [0, 0, 568, 0, 0, 15, 1513, 583, 0, 254, 0, 1970, 0, 78, 228];
bar(Money_Sent);
grid on;
xticklabels(Month); ylim([0 2500])
hFig.WindowState = 'maximized';
text(1:length(Money_Sent),Money_Sent,num2str(Money_Sent'),'vert','bottom','horiz','center','FontSize',25); 

all_money = sum(Money_Sent);
Average_HomeMoneySent = all_money/length(Month);

Thank you for your time.

Answer 1

[Star Strider]

hFig = figure(1);
Month = {'April'; 'May'; 'June'; 'July'; 'August'; 'September'; 'October'; 'November'; 'December';'January'; 'February'; 'March'; 'April'; 'May'; 'June'};
Money_Sent = [0, 0, 568, 0, 0, 15, 1513, 583, 0, 254, 0, 1970, 0, 78, 228];
mean_Money_Sent = mean(Money_Sent);
bar(Money_Sent);
yline(mean_Money_Sent, '-r', 'LineWidth',2, 'DisplayName','Mean of Money_Sent')
grid on;
xticklabels(Month); ylim([0 2500])
hFig.WindowState = 'maximized';
text(1:length(Money_Sent),Money_Sent,num2str(Money_Sent'),'vert','bottom','horiz','center','FontSize',25); 

all_money = sum(Money_Sent);
Average_HomeMoneySent = all_money/length(Month);

The yline functionwas introduced in R2018b.

An equivalent approach would be:

hold on

plot(xlim, [1 1]*mean_Money_Sent, '-r', 'LineWidth',2, 'DisplayName','Mean of Money Sent')

hold off

.

[Ashfaq Ahmed]

Hi!

Excellent! I was exactly looking for something like this. But can you please tell me how can I actually show the value of the mean in the figure?

[Star Strider]

As always, my pleasure!

There are at least two options:

Month = {'April'; 'May'; 'June'; 'July'; 'August'; 'September'; 'October'; 'November'; 'December';'January'; 'February'; 'March'; 'April'; 'May'; 'June'};
Money_Sent = [0, 0, 568, 0, 0, 15, 1513, 583, 0, 254, 0, 1970, 0, 78, 228];
mean_Money_Sent = mean(Money_Sent);

hFig = figure(1);
bar(Money_Sent, 'DisplayName','Money Sent');
yline(mean_Money_Sent, '-r', 'LineWidth',2, 'DisplayName',sprintf('Mean of Money\\_Sent = %.2f',mean_Money_Sent))
grid on;
xticklabels(Month); ylim([0 2500])
hFig.WindowState = 'maximized';
text(1:length(Money_Sent),Money_Sent,num2str(Money_Sent'),'vert','bottom','horiz','center','FontSize',25); 
legend('Location','NW')

figure
bar(Money_Sent, 'DisplayName','Money Sent');
yline(mean_Money_Sent, '-r', 'LineWidth',2, 'DisplayName',sprintf('Mean of Money\\_Sent = %.2f',mean_Money_Sent))
grid on;
xticklabels(Month); ylim([0 2500])
hFig.WindowState = 'maximized';

text(1:length(Money_Sent),Money_Sent,num2str(Money_Sent'),'vert','bottom','horiz','center','FontSize',25); 
text(1, mean_Money_Sent, sprintf('\\leftarrow Mean of Money Sent = %.2f',mean_Money_Sent), 'Horiz','left', 'Vert','bottom', 'Rotation',75)

all_money = sum(Money_Sent);
Average_HomeMoneySent = all_money/length(Month);

The first option uses the 'DisplayName' property with the legend, that I augmented to show the value as well in this example.

The second option uses a text object to label the line, and omits the legend call.

.

Answer 2

[Voss]

Month = {'April'; 'May'; 'June'; 'July'; 'August'; 'September'; 'October'; 'November'; 'December';'January'; 'February'; 'March'; 'April'; 'May'; 'June'};
Money_Sent = [0, 0, 568, 0, 0, 15, 1513, 583, 0, 254, 0, 1970, 0, 78, 228];
Average_HomeMoneySent = mean(Money_Sent);

A legend:

hFig = figure;
bar(Money_Sent);
grid on;
xticklabels(Month); ylim([0 2500])
hFig.WindowState = 'maximized';
text(1:length(Money_Sent),Money_Sent,num2str(Money_Sent'),'vert','bottom','horiz','center','FontSize',25); 
legend(line('LineStyle','none'), ...
    sprintf('Avg: %.2f',Average_HomeMoneySent), ...
    'Location','NorthWest', ...
    'FontSize',15);

An annotation:

hFig = figure;
bar(Money_Sent);
grid on;
xticklabels(Month); ylim([0 2500])
hFig.WindowState = 'maximized';
text(1:length(Money_Sent),Money_Sent,num2str(Money_Sent'),'vert','bottom','horiz','center','FontSize',25); 
annotation('textbox',[0.15 0.81 0.2 0.1], ...
    'String',sprintf('Avg: %.2f',Average_HomeMoneySent), ...
    'FitBoxToText','on', ...
    'FontSize',15, ...
    'BackgroundColor','w');

A horizontal line with text:

hFig = figure;
bar(Money_Sent);
grid on;
xticklabels(Month); ylim([0 2500])
hFig.WindowState = 'maximized';
text(1:length(Money_Sent),Money_Sent,num2str(Money_Sent'),'vert','bottom','horiz','center','FontSize',25); 
yline(Average_HomeMoneySent,'r','LineWidth',2);
text(0,Average_HomeMoneySent,sprintf('Avg: %.2f',Average_HomeMoneySent), ...
    'vert','bottom', ...
    'horiz','center', ...
    'FontSize',15, ...
    'BackgroundColor','w', ...
    'Color','r', ...
    'Rotation',55);

[Ashfaq Ahmed]

This is amazing! Thank you so much for such an important help @Voss

[Voss]

You're welcome!