plot several X=const

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Maxime
Maxime le 17 Sep 2014
Commenté : Image Analyst le 17 Sep 2014
Hello,
I have a vector G (with 120 values).
I'd like to plot a vertical line for each value of this vector in a graph having an other curve. How can I do this?
thank you

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Image Analyst
Image Analyst le 17 Sep 2014
Perhaps the stem() function?
g = rand(1, 10);
plot(g, 'ro-', 'LineWidth', 2);
hold on;
stem(g);
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Image Analyst
Image Analyst le 17 Sep 2014
Modifié(e) : Image Analyst le 17 Sep 2014
How about this:
Y = [2.5, 34, 65, -12]
G = [12.5, 5.789, 4.6102, 21.09]
plot(Y, 'ro-', 'LineWidth', 4);
grid on;
hold on;
stem(G, max(Y)*ones(1, length(G)), 'Marker', 'none', 'LineWidth', 4);
Note: Y and G don't have to have the same number of elements. ALso, you have not defined an X for the Y values so I'm just assuming X is the index number. For the "G" lines, I'm having them go just from 0 up to the max Y value since you gave no indication of where the lines start or stop.
Image Analyst
Image Analyst le 17 Sep 2014
Another option to go the full height of the graph is to use line() function:
Y = [2.5, 34, 65, -12]
G = [12.5, 5.789, 4.6102, 21.09]
plot(Y, 'ro-', 'LineWidth', 4);
grid on;
hold on;
yl = ylim();
for k = 1 : length(G)
x = G(k);
line([x, x], yl, 'Marker', 'none', 'LineWidth', 4);
end

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