[Matlab] Plotting two functions of the same variable against each other


by av8or
Tags: thermodynamics
av8or
av8or is offline
#1
Nov15-12, 05:35 PM
P: 2
I need to make two plots of volume as a function of time vs pressure as a function of time. When plotted the graph will have an enclosed area. I am having trouble on how to have matlab plot these two functions against each other.

My experience with matlab is having a function defined in a script file. I have not been exposed to using a function m file to define a function and reference it in a script.

My functions are as follows where (t) is the only variable, everything else is defined earlier in the file. I need to graph P vs Vc and P vs Ve. The order of magnitudes of Vc and Ve is different by 10^-3 hopefully that won't matter.

Vc =@(t) vc*sin(omega*t);
Ve =@(t) ve*cos(omega*t);
A =@(t) Vc(t)/(R*Tc) + vtl/(R*Ttl) + vr/(R*Tr) + Ve(t)/(R*Te);
P =@(t) M/A(t);
Phys.Org News Partner Science news on Phys.org
Cougars' diverse diet helped them survive the Pleistocene mass extinction
Cyber risks can cause disruption on scale of 2008 crisis, study says
Mantis shrimp stronger than airplanes
Simon Bridge
Simon Bridge is offline
#2
Nov15-12, 06:14 PM
Homework
Sci Advisor
HW Helper
Thanks ∞
PF Gold
Simon Bridge's Avatar
P: 11,070
Quote Quote by av8or View Post
I need to make two plots of volume as a function of time vs pressure as a function of time. When plotted the graph will have an enclosed area. I am having trouble on how to have matlab plot these two functions against each other.
Why not just plot the vectors against each other?
av8or
av8or is offline
#3
Nov16-12, 12:24 AM
P: 2
Quote Quote by Simon Bridge View Post
Why not just plot the vectors against each other?
I actually had that idea shortly after posting this. Thank you for your response.

Simon Bridge
Simon Bridge is offline
#4
Nov16-12, 01:43 AM
Homework
Sci Advisor
HW Helper
Thanks ∞
PF Gold
Simon Bridge's Avatar
P: 11,070

[Matlab] Plotting two functions of the same variable against each other


No worries - sometimes the process of asking a question will produce the answer.


Register to reply

Related Discussions
Plotting Fourier Functions in Matlab - Help? Calculus & Beyond Homework 1
Plotting Bode Diagrams of exponential functions in MatLab(with unknows and a complex) Math & Science Software 0
Numerical Integration of a 2-variable function in Matlab with respect to 1 variable Math & Science Software 1
Plotting FFT in matlab Mechanical Engineering 0
Plotting Transfer Functions Using Matlab Math & Science Software 1