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How do I plot outside temperature versus time in Matlab?

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Jessica Poulin
Jessica Poulin 2019-9-25
评论： KALYAN ACHARJYA 2019-9-25
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!
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rough93
rough93 2019-9-25
Gotcha! See my answer below. If you want to start from midnight instead of mid day, change the +3 to -9.

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回答（2 个）

Kevin Phung
Kevin Phung 2019-9-25
编辑：Kevin Phung 2019-9-25
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)
rough93
rough93 2019-9-25
编辑：rough93 2019-9-25
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.

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