display a single (x, y)

Hi everyone.

Does anyone knows how to display a single point (x, y), for instance (2.899, -3.677), on a curve plot?

It´s possible to display points on plotting curves using getCursorInf( ) method but I prefer using other approashs.

Answer 1

[Star Strider]

I would simply do:

figure
plot(curve_x, curve_y, '-b')
hold on
plot(2.899, -3.677, 'r+')
hold off
grid

That would plot the curve with a solid blue line, and the single point with a red plus sign.

[Rafael Espírito Santo]

Thanks Star Strider

Instead of plotting a red plus sign on x = 2.899 and y = -3.677, I would like to plot (2.899, -3.677) on x = 2.899 and y = -3.677.

[Star Strider]

Try this:

figure
plot(curve_x, curve_y, '-b')
point = [2.899, -3.677];
text(point(1), point(2), sprintf('(%.3f,%.3f)', point))
grid

See the documentation for the text (link) function for details.

[Rafael Espírito Santo]

It´s work Star Strider.

Thank you very much indeed.

[Star Strider]

My pleasure.

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