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python Programming Glossary: df.ixHow to slice by columns in pandas http://stackoverflow.com/questions/10665889/how-to-slice-by-columns-in-pandas want df DataFrame np.random.rand 4 5 columns list 'abcde' df.ix 'b' b c d e 0 0.418762 0.042369 0.869203 0.972314 1 0.991058..
http://stackoverflow.com/questions/11881165/slice-pandas-dataframe-by-row 2 df.C 6 df.D 0 Out 39 A B C D b 6 1 5 2 d 9 3 2 2 In 40 df.ix rows Out 40 A B C D a 0 2 6 0 c 0 2 6 0 In 41 df df.A 0 df.B..
Modifying a subset of rows in a pandas dataframe http://stackoverflow.com/questions/12307099/modifying-a-subset-of-rows-in-a-pandas-dataframe
http://stackoverflow.com/questions/12343271/scipy-instead-of-gnu-octave
Benefits of panda's multiindex? http://stackoverflow.com/questions/13226029/benefits-of-pandas-multiindex since we now have a hierarchal index. For example. In 44 df.ix one Out 44 A B 1 0.732470 0.313871 2 0.031109 2.068794 3 1.520652.. narrow down our data selection further by doing this In 45 df.ix one .ix 1 Out 45 A 0.732470 B 0.313871 Name 1 And of course.. course if we want a specific value here's an example In 46 df.ix one .ix 1 A Out 46 0.73247029752040727 So if we have even more..
Understanding pandas dataframe indexing http://stackoverflow.com/questions/14192741/understanding-pandas-dataframe-indexing a copy. With single label scalar indexing and slicing e.g. df.ix 3 6 or df.ix 'A' a view will be returned. In df df.key 1 'D'.. single label scalar indexing and slicing e.g. df.ix 3 6 or df.ix 'A' a view will be returned. In df df.key 1 'D' you first do..
Pandas sort by group aggregate and column http://stackoverflow.com/questions/14941366/pandas-sort-by-group-aggregate-and-column by True False so that it ultimately looks like this In 30 df.ix 5 2 1 4 3 0 Out 30 A B C 5 baz 2.301539 True 2 baz 0.528172.. A values by the aggregate sum of the B values In 2 sort1 df.ix grp 'B' .transform sum .sort 'B' .index In 3 sort1 Out 3 A B..
make matplotlib draw() only show new point http://stackoverflow.com/questions/16447812/make-matplotlib-draw-only-show-new-point projection '3d' count 0 plotting True while plotting df2 df.ix count count 1 xs df2 'x.mean' ys df2 'y.mean' zs df2 'z.mean'.. Label' ax.set_zlabel 'Z Label' lin None while plotting df2 df.ix count count 1 xs df2 'x.mean' ys df2 'y.mean' zs df2 'z.mean'..
matplotlib 3d plot with changing labels http://stackoverflow.com/questions/16468538/matplotlib-3d-plot-with-changing-labels ax.set_zticklabels labels lin None while plotting df2 df.ix count count 1 xs df2 'x.mean' ys df2 'y.mean' zs df2 'z.mean'..
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