how to filter particular set of dates from a column?

how to filter particular set of dates from a column?

eg

if we have a column like this

19790914

19791219

19800310

19800622

....

20001231

how to remove/filter dates from 19800310 to 19901214. after this in this output how to add one date before 19800310?

Answer 1

[KSSV]

Convert the dates to datenum and use logical indexing i.e. use inequalitties.

[Suresh R]

how to add one date in beginninng?

[KSSV]

DEfine the date and append.

A = rand(1,3) ;
A = [rand A]

[Suresh R]

thank you!!

Answer 2

[Walter Roberson]

idx = find(19800310 <= column & column <= 19901214);

At this point you can select corresponding values by

selected_data = YourData(idx,:);

and you can reject corresponding values by

other_data = YourData; other_data(idx,:) = [];

If you are selecting and you want to add an entry before 19800310 then

selected_plus = [Additional_data; selected_data];

If you are rejecting and you want to add an entry where 19800310 would have been then

other_plus = [other_data(1:idx(1)-1, :); Additional_Data; other_data(idx(1):end,:)];