Data structures for statistical computing in Python - SciPy Conferences
Data structures for statistical computing in Python - SciPy Conferences
Data structures for statistical computing in Python - SciPy Conferences
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Manipulat<strong>in</strong>g panel (3D) data<br />
What you saw was the “stacked” or tabular <strong>for</strong>mat, but the 3D <strong>for</strong>m can<br />
be more useful at times:<br />
>>> lp = LongPanel.fromRecords(grunfeld, ’year’,<br />
’firm’)<br />
>>> wp = lp.toWide()<br />
>>> wp<br />
<br />
Dimensions: 3 (items) x 20 (major) x 10 (m<strong>in</strong>or)<br />
Items: capital to value<br />
Major axis: 1935 to 1954<br />
M<strong>in</strong>or axis: 1 to 10<br />
McK<strong>in</strong>ney () Statistical <strong>Data</strong> Structures <strong>in</strong> <strong>Python</strong> <strong>SciPy</strong> 2010 27 / 31
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