Read a data set and bin it to different groups.

2004017     2004018     2004018   2006019     2004019   2004017    2004018     2004018     2005019     2004019   2004017     2004018   2004018    2008019     2004019

The first four numbers of each data give the year. I want to bin the data according to their years. How should I do that? if the year is 2004 assign it to an array T1. if the year is 2005 assign it to an array T2. So on.

Answer 1

[Rick Rosson]

   A = [   List of numbers    ];
   x = floor(A/1000);

   T1 = A( x == 2004 );
   T2 = ...
   ...

[anton fernando]

Thank you very much. Similarly how can I do that for the last 3 digits in the numbers. I want to read last 3 digits and bin them to intervals. If last 3 digits in between 0-5, 5-10, 10-15 so on.

Answer 2

[Azzi Abdelmalek]

a=[2004017 2004018 2004018 2006019 2004019 2004017 2004018 2004018 2005019 2004019 2004017     2004018 2004018 20084019 2004019]
b=arrayfun(@num2str,a,'un',0)
c=cellfun(@(x) str2num(x(1:4)),b)
[ii,jj,kk]=unique(c)
idx=arrayfun(@(x) find(ismember(c,x)),ii,'un',0)
out=cellfun(@(x) a(x),idx,'un',0)
celldisp(out)

[anton fernando]

Thank you. It worked.