group data every 10 days(decade)?

i have 1 year of temperature data, I have 3 arrays - Latitude, Longitude, Temperature, times (daily)

i want to group or extract it based on date for each month

D1 = [1,2,3,4,5,6,7,8,9,10];

D2 = [11,12,13,14,15,15,17,18,19,20];

D3 = [21,22,23,24,25,26,27,28,29,30,31];

how to do that? thank

[Arif Hoq]

please attach your data.

i have 1 year of temperature data, I have 3 arrays - Latitude, Longitude, Temperature, times (daily)

i guess you have 4 columns ( Latitude, Longitude, Temperature and times)

Answer 1

[KSSV]

Convert your dates into datetime or datevec. From this you can get the year, month, day etc.....from day data array, use ismember with D1, D2, D3 to get the indices and then use this indexing to extract the data.

So read about datetime / datevec, and ismember.