Legend entries all same color in Matlab 2015b
7 views (last 30 days)
Show older comments
I just updated to Matlab 2015b, and the frustration has already begun.
I am making a simple scatter plot with multiple data sets. Each data set has a different color, but the legend shows points all in the same color. Example code showing problem below: (ONLY IN 2015b)
---------------
x = 1:1:100;
y1 = rand(1,100);
y2 = rand(1,100);
y3 = rand(1,100);
figure;
scatter(x,y1);
hold on;
scatter(x,y2,'*');
scatter(x,y3);
legend('random 1','random 2','random 3') ;
---------------
The different symbol choice on 'random 2' illustrates that the problem is only with color, and not with referencing the same handle for each.
Help much appreciated!
Maddie
4 Comments
Talfan Evans
on 4 Jul 2016
Also found this bug. Easy to use the plot command but specify the marker type, i.e:
scatter(x,y,'r')
produces the same output as:
plot(x,y,'or')
The bug doesn't seem to affect the plot command.
joebob
on 16 Feb 2017
Hello, found a way to show the color in the legend by forcing the `MarkerFaceColor` property:
h = scatter(x_data, y_data, area_data, 'green', 'filled', 'MarkerFaceColor', 'green');
Accepted Answer
Mike Garrity
on 15 Sep 2015
2 Comments
lis coffey
on 4 Jul 2016
i guess the problem is only with color, and not with referencing the same handle for each. Thanks \ Qwikfix \
More Answers (4)
Jacob Kamminga
on 28 Jun 2016
From the bugreport, Use this workaround when the points within each scatter plot are different colors:
Call the legend function with two or more output arguments:
s1 = scatter(1:10,1:10,[],1:10);
hold on
s2 = scatter(2:11,1:10,[],26:35);
[h, ~] = legend('show');
1 Comment
Tony L.
on 15 Sep 2015
There must be a cleaner way to do this than the below, but gscatter seems to do the right thing:
x = 1:1:100;
y1 = rand(1,100);
y2 = rand(1,100);
y3 = rand(1,100);
g1 = repmat(1,length(y1),1);
g2 = repmat(2,length(y2),1);
g3 = repmat(3,length(y3),1);
ds = [x', y1', g1; x', y2', g2; x', y3', g3];
figure;
gscatter(ds(:,1), ds(:,2), ds(:,3));
legend('random 1','random 2','random 3') ;
0 Comments
SHR
on 1 Mar 2016
I have a similar issue. My data set is a table with multiple variables over time associated with specific locations. I wanted to graph all variables (y axis) over time on one scatter plot only for one location. Thus I converted the dates to DateNumebers and restricted the variables by location e.g., Y1-Znppm(SiteCat=='location_x'. The legend has the same symbol color. Is there an easier way to circumvent the bug?
1 Comment
See Also
Categories
Find more on Annotations in Help Center and File Exchange
Products
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!