HOW TO PLOT X VS Y AT DIFFERENT Z

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Abdulrahman Mohamed
回答： Mathieu NOE 2022-6-14
I want to plot the density vs pressure at different Temprature
How can i make this plot as the density function of pressure at fixed temprature
for example
P=200:10000;%the pressure range
T=100:600, % temprature range
p= (x*P+T) % density equation it is not real one it is example
I wnat to tell the matlab calculate density at P from 200:1000 at fixedTemp 1 then move to at fixed temp and at the end I want to plot all the data in same graph

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回答（1 个）

Mathieu NOE
Mathieu NOE 2022-6-14
hello
maybe this ?
NB : I used large steps for pressure and temperature to avoid creating very large arrays - adapt to your needs
clearvars
P=200:1000:10000;%the pressure range (NB : pressure steps = 1000)
T=100:100:600; % temperature range (NB : temperature steps = 100)
figure(1)
hold on
for ci = 1:numel(T)
d = (0.3*P+T(ci)); % density equation it is not real one it is example
str_leg{ci} = ['Temp. = ' num2str(T(ci)) , ' deg C'];
plot(P,d);
end
legend(str_leg);

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