The pandas DataFrame object has a sort method but pandas DataMatrix object does not. What is the best way to sort this DataMatrix object by index (the date column) in ascending order? >>> dm compound_ret 2/16/2011 0:00 0.006275682 2/15/2011 0:00 0.003098208 2/14/2011 0:00 0.0055039 2/13/2011 0:00 0.011471506 2/12/2011 0:00 0.011853712 2/11/2011 0:00 0.009558739 2/10/2011 0:00 0.014127912 2/9/2011 0:00 0.02042923 2/8/2011 0:00 0.023308062 The result should be the DataMatrix with 2/8/2011 as the first entry and 2/16/2011 as the last entry. The entries in the compound_ret column should follow their date in the sort. So the result should look something like this: >>>dm_sorted compound_ret 2/8/2011 0:00 0.023308062 2/9/2011 0:00 0.02042923 2/10/2011 0:00 0.014127912 2/11/2011 0:00 0.009558739 2/12/2011 0:00 0.011853712 2/13/2011 0:00 0.011471506 2/14/2011 0:00 0.0055039 2/15/2011 0:00 0.003098208 2/16/2011 0:00 0.006275682 Continue reading...
