Sample datasets in Pandas

Question

When using R it\'s handy to load \"practice\" datasets using

data(iris)

or

data(mtcars)

Is there something s

Answer 1

The rpy2 module is made for this:

from rpy2.robjects import r, pandas2ri
pandas2ri.activate()

r['iris'].head()

yields

   Sepal.Length  Sepal.Width  Petal.Length  Petal.Width Species
1           5.1          3.5           1.4          0.2  setosa
2           4.9          3.0           1.4          0.2  setosa
3           4.7          3.2           1.3          0.2  setosa
4           4.6          3.1           1.5          0.2  setosa
5           5.0          3.6           1.4          0.2  setosa

---

Up to pandas 0.19 you could use pandas' own rpy interface:

import pandas.rpy.common as rcom
iris = rcom.load_data('iris')
print(iris.head())

yields

   Sepal.Length  Sepal.Width  Petal.Length  Petal.Width Species
1           5.1          3.5           1.4          0.2  setosa
2           4.9          3.0           1.4          0.2  setosa
3           4.7          3.2           1.3          0.2  setosa
4           4.6          3.1           1.5          0.2  setosa
5           5.0          3.6           1.4          0.2  setosa

---

rpy2 also provides a way to convert R objects into Python objects:

import pandas as pd
import rpy2.robjects as ro
import rpy2.robjects.conversion as conversion
from rpy2.robjects import pandas2ri
pandas2ri.activate()

R = ro.r

df = conversion.ri2py(R['mtcars'])
print(df.head())

yields

    mpg  cyl  disp   hp  drat     wt   qsec  vs  am  gear  carb
0  21.0    6   160  110  3.90  2.620  16.46   0   1     4     4
1  21.0    6   160  110  3.90  2.875  17.02   0   1     4     4
2  22.8    4   108   93  3.85  2.320  18.61   1   1     4     1
3  21.4    6   258  110  3.08  3.215  19.44   1   0     3     1
4  18.7    8   360  175  3.15  3.440  17.02   0   0     3     2