How can I use index numbers as markers in SCATTER?

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feng
feng am 8 Mär. 2011
Kommentiert: Adam Danz am 20 Aug. 2020
When I used scatter to plot my data, it gave markers in different shapes, but the sample indexes are important in my case and I want to put sample indexes as markers, can I do it in matlab? Thanks
  1 Kommentar
Andreas Goser
Andreas Goser am 8 Mär. 2011
You can increase the chances of getting a response by providing example code or a screenshot.

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Antworten (1)

Andreas Goser
Andreas Goser am 8 Mär. 2011
The user provided details. The question is about whether you can use numbers (in this case an index) instead of a marker. I suggest using TEXT instead of SCATTER. Here I have an example code
x=[1 1 2 2 3 3 4 4];
y=[2 3 1 2 3 4 3 2];
figure(1)
scatter(x,y)
figure(2)
axis([min(x)-1, max(x)+1, min(y)-1, max(y)+1])
for k=1:length(x)
text(x(k),y(k),num2str(k))
end
  3 Kommentare
Andreas Goser
Andreas Goser am 8 Mär. 2011
Yeah, I know - old school still using EVAL and loops...
Adam Danz
Adam Danz am 20 Aug. 2020
If you're using text as markers, it probably important to center the text on the coordinate. To do that,
text(___, 'HorizontalAlignment', 'Center', 'VerticalAlignment', 'Middle')

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