title: Obtaining the first few rows of a dataframe
body: <p>Is there a way to get the first n rows of a dataframe without using the indices. For example, I know if I have a dataframe called <code>df</code> I could get the first 5 rows via <code>df.ix[5:]</code>. But, what if my indices are not ordered and I dont want to order them? This does not seem to work. Hence, I was wondering if there is another way to select the first couple of rows. I apologize if there is already an answer to this. I wasnt able to find one.</p>