plot by skipping some points
154 views (last 30 days)
Show older comments
Hi all,
I want to plot by skipping some points (4,31), (8, 71) and so on in my data . Is there any straight forward way of doing it?
Thank you
x=[1:1:20];
y=[1:10:200];
%x=c(:,1)
plot (x,y,'o');
%ismembertol(
Accepted Answer
Adam Danz
on 1 Feb 2021
Edited: Adam Danz
on 2 Feb 2021
Several methods to plot a subset of values within an array.
- Indexing. If you want to eliminate a list of (x,y) values, use functions like ismember, ismembertol, or == to create an index of matches, idx. Then use ~idx to select all other values when plotting plot(x(~idx), y(~idx)).
- Nan-replacement. After finding the values you want to ignore using indexing, replace those values with NaN. x(idx)=NaN; y(idx)=NaN; plot(x,y)
- Remove unwanted values. After finding the values you want to ignore using indexing, remove them using x(idx)=[]; y(idx)=[]; plot(x,y)
- To plot every n'th value: plot(x(1:n:end), y(1:n:end));
- To remove every n'th value: x(1:n:end)=[]; y(1:n:end)=[]; plot(x,y)
- To plot the n'th, m'th, and p'th values: idx=[n,m,p]; plot(x(idx),y(idx));
- To eliminate the n'th, m'th, and p'th values: idx=[n,m,p]; x(idx)=[]; y(idx)=[]; plot(x,y)
If you need additional help implementing any of those ideas, show us what you've tried where you're stuck.
More Answers (0)
See Also
Categories
Find more on Graphics Object Programming in Help Center and File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!