How to add a dashed horizontal line at 0 using plot function?
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Anne Nguyen
am 29 Sep. 2019
Kommentiert: shahriar sowad
am 1 Jul. 2021
How I do add a dashed horizontal line on a graph using the plot function?
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Adam Danz
am 29 Sep. 2019
Bearbeitet: Adam Danz
am 2 Okt. 2019
Here are 3 options to add a dashed horizontal line to a plot. The 1st option is recommended if you're using matlab r2018b or later.
% Use yline() to plot a horizontal line at y=0 (requires r2018b or later)
% https://www.mathworks.com/help/matlab/ref/yline.html
% This will automatically adjust if your xlim changes.
yline(0,'k--')
% Plot a line at y=0 that spans from x=0 to x=5
plot([0,5],[0,0], 'k--')
% Plot a line at y=0 that spans the current x-limits of your axes
plot([min(xlim()),max(xlim())],[0,0], 'k--')
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