Timeseries data in Matlab

2019 11 19
1 个回答
更新时间：2019 12 8
6 次查看（30 天）

0 个投票

Hi,
I have textfile .txt for temperature data over the past 50 years (attached as pic).
I want to plot it as timeseries data.
How can I do this?
What function should I use?
Thank you.
(Here is snippet of data. It goes on like this until year 2017).
(Smallest time unit is hour in 3 hour intervals)
(Temp is the dependent variable).

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回答（1 个）

0 个投票

try it:
[filename,folder]=uigetfile('*.txt','please select your txt file');
a=readtable(fullfile(folder,filename));
time=datetime([a{:,2:5} zeros(size(a,1),2)]);
temp=a{:,6};
figure;
plot(time,temp)

3 个评论
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Sarah Yun
Sarah Yun 2019-11-19
编辑：Sarah Yun 2019-11-19
Hello. It works but what is reason for this part? What does it do? Thank you.
...zeros(size(a,1),2)]);
JESUS DAVID ARIZA ROYETH
编辑：JESUS DAVID ARIZA ROYETH 2019-12-8
these zeros are the minutes and seconds that are set to 0 by default, please formally accept my answer.
Sarah Yun
Sarah Yun 2019-11-19
编辑：Sarah Yun 2019-11-19
Hello. Please, one more question, then I will accept your answer.
I loaded this .txt file into Matlab.
Now I want to do the same for this - make timeseries.
(Var6 = Temp)
Smallest unit of time is 1 hour.
Can you suggest correct function?
Thank you.

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