How can I mark specific indexes on a plot?
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I have file with the breathing of sick people. These breathing sounds have wheezes in it. I had the plot drawn. I also have the start and end indexes of wheezing. How can I mark these indexes on the plot?
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Answers (2)
KSSV
on 6 Dec 2020
If (x,y) is your data and id1 and id2 are the indices. Use:
plot(x,y,'b')
hold on
id = [id1 id2] ;
plot(x(id),y(id),'*r')
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Steven Lord
on 6 Dec 2020
Edited: Steven Lord
on 6 Dec 2020
You could use the MarkerIndices property of the line object returned by plot or you could use xline depending on how you want those points marked.
x = 0:360;
y = sind(x);
plot(x, y, 'ro-','MarkerIndices', (0:45:360)+1)
figure
plot(x, y, 'r-')
for multiplesOf45 = 0:45:360
xline(multiplesOf45)
end
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