Combine multiple data series into a single series
10 views (last 30 days)
Show older comments
Is there a way to combine multiple data series so that they only display as a single series in the Legend?
I have a function that uses 'plot' to plot multiple line segments. It can be thought of as a custom 'marker' shape class. Each data point is drawn using multiple line segments. I plot this (conceptually) single data series on the same plot as multiple other data series.
When I use the 'legend' function, each segment shows up as a separate element. So if I have plotted 2 series using the standard 'plot' function, and one using this custom function, with N data points, the legend thinks that there are N+2 data series. I want to treat this as 3 data series.
0 Comments
Accepted Answer
Adam Danz
on 22 Mar 2019
Edited: Adam Danz
on 19 Aug 2020
Specify a vector of object handles in your call to legend.
Example
hold on
h(1) = plot(x,y);
h(2) = plot(x2,y2);
h(3) = plot(x3,y3);
legend(h(1), 'data')
If you're using the 'DisplayName' property, you can use the legendUnq() FEX submission to represent only unique names in your legend.
Example
hold on
for i = 1:3
h(i) = plot(rand(1,10), rand(1,10, 'o'), 'DisplayName', sprintf('Data_%d',i));
end
legend(legendUnq(gca))
2 Comments
Adam Danz
on 22 Mar 2019
Edited: Adam Danz
on 22 Mar 2019
One simplification I could suggest: if you use the 'DisplayName' property in your call to plot, you don't need to produce the "Legend" cell array.
function[h]=plotCustom(data)
...
temph=plot([(xStart;xEnd],[yStart;yEnd],'color',c, 'DisplayName', sprintf('series %d', i))); % assumes 'i' is available
h(i)=temph(1);
...
legend(h)
end
More Answers (0)
See Also
Categories
Find more on Visual Exploration 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!