Cut a graph ?

Hi everyone !

I hope my problem will be quite clear. I am trying to plot somethings like this (Photo linked to this topic) and I wrote this :

$figure(1)

p2 = plot(0,0,'red');

bolleen = 1;

for i = 1:10

switch bolleen

case 1

bolleen = 0;

B = 1;

case 0

bolleen = 2;

B = 2;

case 2

bolleen = 1;

B = 0;

end

if B ~= 0

p2.XData(i) = i;

p2.YData(i) = B;

hold on;

end

end

I thought that for the values of i when "bolleen" is equal to 0, it won't plot it, and I would have a "cut graphic". But it seems like it takes the value (0,0) and my graphic is a mess. Thanks for your help !

[Mathieu NOE]

hello

why such a complicated code ?

if you need to plot two lines you can simply do this

plot([1  2],[1  2],'b',[4  5],[1  2],'r');
axis([0 6 0 3]);

[dsq dq]

Hello,

thanks for your answer. I forgot to precise that I don't know the lenght of my vectors, and I would like to plot, only one vectors !

Answer 1

[Steven Lord]

If the data to be plotted includes NaN, that point will not be plotted.

x = 1:5;
y = [1 2 NaN 1 2];
plot(x, y)
axis([0 6 0 3]) % Show some border around the plot

[dsq dq]

Oh ok I see. Thanks I did not tihk to that !