![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/979670/Screenshot_20220427-002644_Samsung%20Internet.jpg)
How to add text to a line in the plot?
157 views (last 30 days)
Show older comments
Hi all,
This code:
load('z_means'); load ('z_diffs'); load ('z_CR_ofmean')
figure ('color','w');
plot(z_means,z_diffs,'sr', 'MarkerSize', 9)
hold on
%Plot lines
plot(z_means,zeros(1,length(z_means)),'r', 'LineWidth', 0.7); %%%plot zero
plot(z_means, ones(1,length(z_means)).*z_CR_ofmean(1),'r--', 'LineWidth', 0.6); %%%plot the upper CR
plot(z_means, ones(1,length(z_means)).*z_CR_ofmean(2),'r--', 'LineWidth', 0.6); %%%plot the lower CR
% Add text
text(z_CR_ofmean, [mynum2str(z_CR_ofmean(1)) ''],'HorizontalAlignment','left','VerticalAlignment','middle','fontsize',6);
text(z_means, [mynum2str(z_means,2) ''],'HorizontalAlignment','left','VerticalAlignment','middle','fontsize',6);
text(z_CR_ofmean, [mynum2str(z_CR_ofmean(2))''],'HorizontalAlignment','left','VerticalAlignment','middle','fontsize',6);
Produces this:
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/979535/image.jpeg)
and the error:
Error using text
First two or three arguments must be numeric doubles.
Wheareas I want:
- Add text to each line correctly (can be any text as an example). Can you help please?
0 Comments
Accepted Answer
Simon Chan
on 26 Apr 2022
By using this function, you can also add the text in the following example.
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/979670/Screenshot_20220427-002644_Samsung%20Internet.jpg)
0 Comments
More Answers (1)
Bjorn Gustavsson
on 26 Apr 2022
With text you specify both the x and y-coordinate of the text. For example:
th = text(14,-0.5,'text-test that will start at x: 14, y: -0.5');
So you just need to specify an/the x-location before the specification of the y-location (z_CR_ofmean).
HTH
0 Comments
See Also
Categories
Find more on Annotations 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!