title: Pandas resample options
body: <p>I looked up the documentation for the <a href="http://pandas.pydata.org/pandas-docs/version/0.17.0/generated/pandas.DataFrame.resample.html" rel="nofollow">pandas resample module</a>. While it does describe the parameters available in the function, It doesn't tell me the possible options of these parameters. For ex. the <code>how</code> parameter takes a value of <code>'sum'</code> (as shown in example), but what other values are possible, and what do these do? Similarly for <code>fill</code> parameter. Can anybody tell me/provide a link to available values of these parameters??</p>