Data structures for statistical computing in Python - SciPy Conferences

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R’s data.frame One of the core data structures of the R language. In many ways similar to a structured array. > df
R’s data.frame Perhaps more like a mutable dictionary of vectors. Much of R’s statistical estimators and 3rd-party libraries are designed to be used with data.frame objects. > df$isgoog df item date price volume isgoog 1 GOOG 2009-12-28 622.87 1697900 TRUE 2 GOOG 2009-12-29 619.40 1424800 TRUE 3 GOOG 2009-12-30 622.73 1465600 TRUE 4 GOOG 2009-12-31 619.98 1219800 TRUE 5 AAPL 2009-12-28 211.61 23003100 FALSE 6 AAPL 2009-12-29 209.10 15868400 FALSE 7 AAPL 2009-12-30 211.64 14696800 FALSE 8 AAPL 2009-12-31 210.73 12571000 FALSE McKinney () Statistical Data Structures in Python SciPy 2010 9 / 31
Page 1 and 2: Data structures for statistical com
Page 3 and 4: What matters to statistical users?
Page 5 and 6: What matters to statistical users?
Page 7 and 8: Structured arrays Structured arrays
Page 9: Structured arrays Structured arrays
Page 13 and 14: pandas library Began building at AQ
Page 15 and 16: pandas library Began building at AQ
Page 17 and 18: How to organize the data? Especiall
Page 19 and 20: How to organize the data? In this f
Page 21 and 22: Data alignment Arithmetic operation
Page 23 and 24: Missing data handling >>> (s1 + s2)
Page 25 and 26: GroupBy in R R users are spoiled by
Page 27 and 28: GroupBy in pandas More fancy things
Page 29 and 30: Merging data sets By default gluing
Page 31 and 32: Manipulating panel (3D) data In fin
Page 33 and 34: Manipulating panel (3D) data What y
Page 35 and 36: Implementing statistical models Com

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