Cannot set marker edge thickness using the Linewidth property smaller than 1pt

122 views (last 30 days)
I would like to set the edge thickness of markers to some smaller values than 1 (0.5 or 0.3 for example). I currently use Matlab 2018b on a Mac and could not yet figure out why markers always appear with an edge width of 1pt. I attached an example where the lines (when exported to an eps file either via the Matlab export function or the export_fig addon) have the correction thickness but the markers seem to remain at a width of 1pt.
Edit: It seems that the Linewidth property affects the edge thickness of markers for values equal to 1 or above. Setting it to values <1 seems not to work though (only for lines, not the markers).
Thanks a lot
testpoints = line([1 2 3 4 5],[4 5 6 7 8],'LineStyle','none','Linewidth', 0.5,'MarkerEdgeColor','k','MarkerFaceColor','w','Marker','s','MarkerSize',4);
testline = line([1 2 3 4 5],[4 5 6 7 8],'LineStyle','-','Linewidth', 0.5,'Marker','none');

Answers (3)

David Broadway
David Broadway on 27 Mar 2020
I am having the same issue.
One not very good solution is to plot the data twice once with just the edge and another with the face. This seems to get the correct effect but it is not an optimal solution.
hold on
plot(XData, YData, ...
'o', ...
'MarkerSize', 1, ...
'MarkerEdgeColor', [31, 119, 180] / 255;
plot(XData, YData, ...
'o', ...
'MarkerSize', 0.8, ...
'MarkerEdgeColor', 'none', ...
'MarkerFaceColor', [174, 199, 232] / 255);
hold off
  1 Comment
Nicolas Pipard
Nicolas Pipard on 22 Apr 2020
This solution is the best!
The undocumented solution might be dangerous in the long run, whereas David's solution will remain valid whatever changes done by Mathworks

Sign in to comment.

jonas on 27 Oct 2018
Edited: jonas on 27 Oct 2018
After digging through the undocumented properties, here's how you change the marker edge thickness:
LineHandle.NodeChildren.LineWidth = 2
The edgethickness does not automatically scale with markersize, so none of your linespec properties affect the edgethickness.
jonas on 28 Oct 2018
Edited: jonas on 28 Oct 2018
Yep you are correct, I had not noticed that the edge of the marker scales with linewidth. The only other answer I can find online is related to resolution, which is not the problem here because the axes ruler is 0.5 pts and is exported just fine. Odd.

Sign in to comment.

JK on 1 Nov 2018
Mathworks support has now confirmed that this is a bug and forwarded it to the development team to be fixed in a future release.


Find more on Graphics Object Properties 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!

Translated by