# How to plot section of a vector with a condition

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Amit Pandey el 2 de Mzo. de 2016
Comentada: Amit Pandey el 3 de Mzo. de 2016
Hello,
i am struggling with something. let me explain what exactly i need to plot. Suppose i have 4 vectors i.e Time, speed, torque, and power. say length of each vector is 15000x1. i want to plot time(x) vs speed(y),time(x) vs torque(y),time(x) vs Power(y). In all the three plots i don't want to shows points where power is less than a certain value. say power varies from 0 to 300. then in all the plots i don't want to show sections of plot whenever power is less than 225.
Thank you. -Amit
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Mike Garrity el 2 de Mzo. de 2016
I'm not clear on whether you want to connect across the skipped points, or leave them out. Here's an example that illustrates both:
npts=1000;
x=linspace(0,4*pi,npts);
y1=cos(x);
y2=sin(x);
figure
subplot(2,1,1)
subplot(2,1,2)
figure
subplot(2,1,1)
ytmp=y1;
plot(x,ytmp);
subplot(2,1,2)
ytmp=y2;
plot(x,ytmp);
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Amit Pandey el 3 de Mzo. de 2016
hello ! the above command did not work. as i wanted the power points less than 225 were not "masked" in the speed and torque plots. is there any other way?
thanks -Amit
Amit Pandey el 3 de Mzo. de 2016
Got it corrected. works great now.

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