MATLAB: Plotting letters instead of symbols

lettersplots

Hi I'm really new to MATLAB and I'm generating images which are a set of 9 letters encased in a rectangle. I can do this with symbols (such as +) but I need to use letters in place of the symbols.

How do I replace the symbols with normal letters?

Thanks

Best Answer

You have to use the text function to label your points with letters.

Example:

x = randi(10, 1, 5);                    % Create Data
y = randi(10, 1, 5);
L = strsplit(sprintf('%c\n','A':'E'));  % Letter Labels
figure(1)
plot(x, y, '+r')
text(x, y, L(1:length(x)), 'HorizontalAlignment','center', 'VerticalAlignment','bottom')
axis([-0.5  10.5    -0.5  10.5 ])

Related Solutions

MATLAB: How to plot a number over its assigned value

I am not certain what numbers you want to plot. The left subplot plots both (x,y) values of the coordinate, and the right subplot only the y-values. Change the format descriptors to what you want. I used '%.1f' here.

The Code:

figure(1)
subplot(1,2,1)
x = randi(10, 1, 5);                    % Create Data

y = randi(10, 1, 5);
% L = strsplit(sprintf('%c\n','A':'E'));  % Letter Labels

L = strsplit(sprintf('(%.1f, %.1f)\n', [x(:) y(:)]'), '\n');
figure(1)
plot(x, y, '+r')
text(x, y, L(1:length(x)), 'HorizontalAlignment','center', 'VerticalAlignment','bottom')
axis([-0.5  10.5    -0.5  10.5 ])
subplot(1,2,2)
x = randi(10, 1, 5);                    % Create Data
y = randi(10, 1, 5);
% L = strsplit(sprintf('%c\n','A':'E'));  % Letter Labels
L = strsplit(sprintf('%.1f\n', y(:)), '\n');
figure(1)
plot(x, y, '+r')
text(x, y, L(1:length(x)), 'HorizontalAlignment','center', 'VerticalAlignment','bottom')
axis([-0.5  10.5    -0.5  10.5 ])

The Plot:

MATLAB: How to add blank space using text function

Use the 'HorizontalAlignment' name-value pair option.

This does what you want when I ran it (in R2017a):

text(x, y, {str1; str2}, 'HorizontalAlignment','center')

Best Answer

Related Solutions

MATLAB: How to plot a number over its assigned value

MATLAB: How to add blank space using text function

Related Question