MATLAB: Customizing point names in matlab

MATLABnaming pointsplots

Is there a way to rename the point names in matlab plots? I know the following code will label the points from 1 to k.

for i=1:length(k)  
  text(xk(i),yk(i),num2str(i))
  hold on
end

Is there a way to add a label to the points eg. s1,s2…. sk? TIA.

Best Answer

x = rand(5,1) ;
y = rand(5,1) ;
s = repmat('s',5,1) ;
n = [1:5]' ;
str = strcat(s,num2str(n)) ;
plot(x,y,'.r') ;
text(x,y,str)

Related Solutions

MATLAB: How can display points as coordinates

x = rand(10,1) ;
y = rand(10,1) ;
plot(x,y,'.r')
text(x,y,strcat('(',num2str(x),',',num2str(y),')')) ;

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:

Best Answer

Related Solutions

MATLAB: How can display points as coordinates

MATLAB: How to plot a number over its assigned value

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