MATLAB Answers

0

How do I plot outside temperature versus time in Matlab?

Asked by Jessica Poulin on 25 Sep 2019
Latest activity Commented on by KALYAN ACHARJYA on 25 Sep 2019
Hello,
I'm not sure how to graph the following code in Matlab (Temperaure over 24 hour period should look sinusodal):
for t = 1:24
T(t,1) = (((Tmax - Tmin)/2)+((Tmax - Tmin)/2) * sin(((t - 9)/12)*Pi));
Thank you!

  6 Comments

ideally the graph would have the temperatures at every hour directly on it, but it will be used just to demonstrate temperature flucuations during the day and not for mathematical purposes.
Gotcha! See my answer below. If you want to start from midnight instead of mid day, change the +3 to -9.
Where is temperature data to plot across time hours?

Sign in to comment.

2 Answers

Answer by Kevin Phung on 25 Sep 2019
Edited by Kevin Phung on 25 Sep 2019

no for loop needed.
Tmax = 310;
Tmin = 298;
t=(1:24)'; % transposed if you want a column vs row
T = ((Tmax - Tmin)/2) + ((Tmax-Tmin)/2)*sin((t-9)/12*pi)
figure
plot(T)

  0 Comments

Sign in to comment.


Answer by rough93
on 25 Sep 2019
Edited by rough93
on 25 Sep 2019

clc; clear
Tmax = 310; % Maximum daily temperature (3pm)
Tmin = 298; % Minimum daily temperature (3am)
x = 1:24;
Graph = 12*sin(((x+3)*pi)/12);
plot(Graph)
This assumes you start at mid day.

  0 Comments

Sign in to comment.