How can I tag or label each plotted data point with its sequence number?
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I would like to tag or label each plotted data point, in each line, with its sequence number.
Accepted Answer
MathWorks Support Team
on 25 Aug 2010
The following code illustrates how this might be done:
% Create random data
m1 = rand(10,2);
m2 = rand(10,2);
% Calculate label displacement
lbl_dwn = .03*max([m1(:,2) m2(:,2)]);
% Plot data
f = figure;
hold on
plot(m1(:,1), m1(:,2), 'b.-')
plot(m2(:,1), m2(:,2), 'g.-')
% Create an array of sequence numbers (you can use other tags)
s = size(m1);
sequence = 1:s(1);
sequence = num2cell(sequence);
data_labels = cellfun(@num2str, sequence, 'UniformOutput', false);
% Display text
text(m1(:,1), m1(:,2)+lbl_dwn(1), data_labels,...
'Color', 'b',...
'HorizontalAlignment', 'Left')
text(m2(:,1), m2(:,2)+lbl_dwn(2), data_labels,...
'Color', 'g',...
'HorizontalAlignment', 'Left')
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