How to select discrete data from continuous time-series data?

Question

Parthu P 2020-5-23

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https://ww2.mathworks.cn/matlabcentral/answers/531378-how-to-select-discrete-data-from-continuous-time-series-data

回答： Ameer Hamza 2020-5-23

I have discrete temperature observations and a continuous rainfall timeseries. I want to select rainfall values from a continuous timeseries corresponding to date of discrete observations. How could I do this in matlab?

Here is example data

Discrete observations Continuous timeseries data

Date Temperature Date Rainfall

11/02/1994 08:40 32 1/02/1994 08:40 10

22/03/1994 08:40 29 - -

20/04/1994 08:50 29 - -

17/05/1994 08:40 25 - -

11/06/1994 08:40 24 - -

27/07/1994 08:50 29 31/07/1994 08:40 21

Thanks in advance for help.

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Answer 1

Ameer Hamza 2020-5-23

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https://ww2.mathworks.cn/matlabcentral/answers/531378-how-to-select-discrete-data-from-continuous-time-series-data#answer_437198

在 MATLAB Online 中打开

Try something like the following code if you have the data in the form of a table.

temp_value = 29; % get all rainfall values for temperature equal to 29
idx = T_temp.Temperature == 29; % T_temp is the table with discrete temperature value
rain_fall = T_rain.Rainfall(idx);