desc

In [1]:

%run nb_helpers.py
from datar.base import factor, letters
from datar.dplyr import desc

nb_header(desc)

%run nb_helpers.py from datar.base import factor, letters from datar.dplyr import desc nb_header(desc)

Try this notebook on binder.

★ desc

¶

Transform a vector into a format that will be sorted in descending order¶

This is useful within arrange().

The original API:
https://dplyr.tidyverse.org/reference/desc.html

Args:¶

  x: vector to transform

Returns:¶

  The descending order of x

In [2]:

desc(range(1,11))

desc(range(1,11))

Out[2]:

array([ -1,  -2,  -3,  -4,  -5,  -6,  -7,  -8,  -9, -10])

In [3]:

desc(factor(letters))

desc(factor(letters))

Out[3]:

array([ -0.,  -1.,  -2.,  -3.,  -4.,  -5.,  -6.,  -7.,  -8.,  -9., -10.,
       -11., -12., -13., -14., -15., -16., -17., -18., -19., -20., -21.,
       -22., -23., -24., -25.])