Using copyobj to copy lines plotted with datetime xdata

10 views (last 30 days)
Matlab returns a warning "Error updating Line. Value must be a vector of numeric type" when I use copyobj to copy a line object in which the XData are datetimes, not numeric. Is there a way to prepare the new axes to receive lines plotted with datetime? Is there a datetime-tolerant version of copyobj?
  1 Comment
Xiaoyi Zhao
Xiaoyi Zhao on 20 Nov 2020
I had similar issue for a longtime, and I was "solving" them by simply plot timeserise with "datenum" (i.e., the MATLAB serieal time) not "datetime". But, the simple/real solution should be this:
For the traget figure
set(gca, 'XAxis',;
Then, you could do the copyobj which the XData are datetime.

Sign in to comment.

Accepted Answer

Walter Roberson
Walter Roberson on 25 Aug 2017
First you have to set the XRuler property of the second axes to be a DateTime ruler, such as
L = ... the line object
ax = ancestor(L, 'axes');
nax = axes();
nax.XRuler = ax.XRuler;
copyobj(L, nax)

More Answers (0)


Find more on Dates and Time 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