Overwrite data in figure but keep axis labels, title, and legend

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Dylan Finley
Dylan Finley 2011-7-15
编辑： John Kelly 2022-10-31
Hi,
I would like to overwrite only the data presented in a figure while keeping the labels and legends the same. I do not want to waste space and time on re-labeling the figures. 'hold on' holds the plot but does not overwrite the existing data and only adds to it.
Thank you for your help.

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采纳的回答

Fangjun Jiang
Fangjun Jiang 2011-7-15
h=plot(rand(1,100));
title('random signal');
legend('blue signal');
set(h,'XData',1:10,'YData',1:10);

更多回答（2 个）

Jack LeBien
Jack LeBien 2016-8-6
Hi, you can use
hold on
cla
plot(newData)
cla (clear all) will remove the plotted data but not other formatting.
  7 个评论
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MechtEngineer
MechtEngineer 2014-4-8
编辑：John Kelly 2022-10-31
I don't see how the previous answer keeps the axis labels, title and legend when plotting some new data on the same axis.
The code that worked for the author (and for me) was:
title('Some Title','HandleVisibility','off');
ylabel('Some ylabel','HandleVisibility','off');
xlabel('Some xlabel','HandleVisibility','off');
set(gca,'NextPlot','replacechildren') ;
Any subsequent plots on this axes keeps the existing axes properties (including title, axis labels and legend), while replacing child objects (e.g. data)
  2 个评论
jinsong mao
jinsong mao 2017-9-5
this method proves to be good, which can solve my problem, i want to keep the label in matlab gui while ploting in callback functions. thanks guys

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