Find the date for extracted values

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SBinary 2013-9-24

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https://ww2.mathworks.cn/matlabcentral/answers/88119-find-the-date-for-extracted-values

I have a file - 1 row and 10 956 columns, with precipitation measurements and have managed to extract the times the precipitations is higher than 20mm for more or equal to 2 days in a row and has stored those values in different matrices for each time it has happened - eg. [21, 37, 27], [23, 38] each in different columns. In another file I have the dates (for 1961-1990) - [year, month, day, and then three more columns, which are not used, filled with 0s] and I would like to see which dates correspond to the extracted precipitation values above. Does anyone know how to do this?

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Azzi Abdelmalek 2013-9-24

You can make your question more clear with a short numeric example

SBinary 2013-9-24

在 MATLAB Online 中打开

Thank you for your answer, I will try.

I have precipitation values [1, 0, 0, 23, 1, 21, 37, 27, 2, 23, 38] and a date file [ 1960, 01, 01; 1960, 01, 02; 1960, 01...; 1960, 01, 11].

What I have done so far is by using the following code,

i=diff([0 data>=20 0]);
i1=find(i==1);
i9=find(i==-1);
l=(i9-i1);
b=l>=2;
i1=i1(b);
i9=i9(b)-1;
c=arrayfun(@(i1,i9) data(i1:i9), i1, i9, 'unif', 0);
c{:}

extract and store, in separate matrices, the values for consecutive days with more or equal to 20mm precipitation - i.e. [21, 37, 27], [23, 38]. What I would like to do now is to connect these extracted values to dates. Does this make it more clear?

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