Draw lines from both axis to point in plot

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

Answer 1

[Adam Danz]

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')

[Yash Runwal]

This is an accurate solution. Thanks!

Answer 2

[Mehmet Cem TOKER]

worked for me. thank you^^