How do I plot outside temperature versus time in Matlab?

2019 9 25
2 个回答
更新时间：2019 9 25
7 次查看（30 天）

0 个投票

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 个评论
显示 4更早的评论 隐藏 4更早的评论

rough93
rough93 2019-9-25
Do you already have the temperature numbers in MATLAB? Or do you have to pull those numbers within the program.
Jessica Poulin
Jessica Poulin 2019-9-25
This is what I have associated to it:
Tmax = 310; %Maximum Temperature Occurring at 3pm (K)
Tmin = 298; %Minimum Temperature Occurring at 3am (K)
and t is time from 1 to 24 hours
rough93
rough93 2019-9-25
And you want to graph a sin wave between 1 and 24 with these max and min values? just an even sin wave without any data provided for the hours in between?
Jessica Poulin
Jessica Poulin 2019-9-25
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.
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.
KALYAN ACHARJYA
KALYAN ACHARJYA 2019-9-25
Where is temperature data to plot across time hours?

请先登录，再进行评论。

请先登录，再回答此问题。

回答（2 个）

Kevin Phung
Kevin Phung 2019-9-25
编辑：Kevin Phung 2019-9-25

0 个投票

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

0 个投票

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.

类别

在 帮助中心 和 File Exchange 中查找有关 Programming 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by