Draw lines from both axis to point in plot
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Hello
I imported a .csv file and plotted its values in a (x,y) plot. Now I want to highlight a specific point by drawing both a vertical and a horizontal line from that point to it's value on the x and y axis and also display those values. Has someone an idea how I can achieve this?
Cheers Marc
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Answers (2)
Adam Danz
on 16 Nov 2018
Edited: Adam Danz
on 4 Apr 2020
Draw vertical and horizontal reference lines
First you should set the axis limits, then plot the lines. Here's a demo
figure
point = [0.7, 0.5]; % Here the point that will have the reference lines
axLims = [0 1 -2 2]; %[x-min, x-max, y-min, y-max] axis limits
plot(point(1), point(2), 'o')
xlim(axLims(1:2));
ylim(axLims(3:4));
hold on
plot([point(1), point(1)], [axLims(3), point(2)], 'k-') %vertical line
plot([axLims(1), point(1)], [point(2), point(2)], 'k-') %horizontal line
Display coordinates of point
text(axLims(1), axLims(3), sprintf('point (%.2f, %.2f)', point), 'HorizontalAlignment', 'Left', 'VerticalAlignment', 'Bottom')
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