How can I count number of dates over 100 degree F?

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Nuria Andreu 2021-8-29

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https://ww2.mathworks.cn/matlabcentral/answers/1442619-how-can-i-count-number-of-dates-over-100-degree-f

评论： Nuria Andreu 2021-8-30

Hello! I have a dataset with daily maximum temperatures and daily minimum temperatures from the 1930s to 2020. I have one data file with the dates and another one with the corresponding temperatures. I want to create a loop (or anything that works) to know how many days are above 100F and how many days are below 32F. Any suggestions?

Thank you!!

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Wan Ji 2021-8-29

Can you share your dataset form so as to write code for you

Nuria Andreu 2021-8-29

Yes! I extracted the daily maximum temperatures and daily minimum temperatures from a bigger dataset.

Thank you!

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Answer 1

Wan Ji 2021-8-29

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https://ww2.mathworks.cn/matlabcentral/answers/1442619-how-can-i-count-number-of-dates-over-100-degree-f#answer_776279

编辑：Wan Ji 2021-8-29

在 MATLAB Online 中打开

dates = readtable('your_dates_file');
% assume that your dates fie has only one column
temps = readtable('your_temperature_file');
% assume that your temperature file has two columns, one is minimum T(°F), the
% other is maximum T (°F)
minT = temps{:,1};
maxT = temps{:,2};
p = minT<32; % or <=
q = maxT>100; % or >=
dates_below_32 = dates(p,:)
dates_above_100 = dates(q,:);
num_of_days_below_32 = sum(p);
num_of_days_above_100 = sum(q);