I wish to calculate the mean values of temperature over the latxlon grid and only for 12GMT for all the 65 months using matlab code.

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Devendra 2023-6-29

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https://ww2.mathworks.cn/matlabcentral/answers/1989663-i-wish-to-calculate-the-mean-values-of-temperature-over-the-latxlon-grid-and-only-for-12gmt-for-all

回答： Cris LaPierre 2023-7-20

I have a data with dimension (lat,lon,time,months) as (5,5,2,65)

number of latitude =5

number of longitude =5

time = 1 for 00 GMT and 2 for 12 GMT

number of months 65

I wish to calculate the mean values of temperature over the latxlon grid and only for 12GMT for all the 65 months using matlab code.

Any suggestions would be highly appreciated.

regards,

Devendra

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Sathvik 2023-6-29

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在 MATLAB Online 中打开

You can take the mean of the data as such

latxlon = randi([20 40],5,5,2,65);
meanTemp = mean(latxlon(:,:,2,:));

If you want to take the mean over all 65 months, you can take the mean along the 4th dimension.

meanTemp = mean(latxlon(:,:,2,:),4)
meanTemp = 5×5
7692   30.6923   29.1538   30.1231   29.3538
8923   31.0308   30.4000   28.9077   28.4154
9538   31.0308   30.4462   30.4308   30.8154
7077   29.6462   30.3077   30.2769   29.5692
4308   30.8154   29.6154   29.0769   29.9846

Here is a link to the documentation

https://www.mathworks.com/help/matlab/ref/mean.html

Hope this helps!

I have attached the netcdf matlab code to read the data and netcdf input file. I want to calculate the mean values of nine varaibles over lat x lon x time x 6961 (4,4,2,6961) for each variable. I request you to kindly modify the code to get the required data. Thanks a lot for your help.

Sanchit

Sanchit 2023-7-18