Get python ggplot bar axis right?

Question

I want to plot the results of throwing a dice in a bar chart using ggplot.

import numpy
import ggplot
import pandas

frame = pandas.DataFrame()

for i in range(6):
    frame.loc[i, 'pips'] = i+1

rand = numpy.random.random_integers(1, 6, 100)

for i in range(len(count)):
    frame.loc[i, 'events'] = numpy.sum(rand == i+1)

frame['propability'] = frame.events / frame.events.sum()

ggplot.ggplot(ggplot.aes(x='pips', weight='events'), frame) + ggplot.geom_bar()

The outcome is this plot

From the examples I expected the plot to

Have more width on each bar
Not have x=7 with no bar

How do I fix these two things?

Antoine R · Accepted Answer · 2015-03-01 09:02:01Z

2

Use parameters "binwidth", "limits" and "breaks" like this :

 ggplot.ggplot(ggplot.aes(x='pips', weight='events'), frame) +
 ggplot.geom_bar(binwidth=1) +
 ggplot.scale_x_continuous(limits = (1,6), breaks = range(1,7))

Which gives me :

Histogram

edited Mar 1, 2015 at 9:02

answered Feb 28, 2015 at 10:58

Antoine R

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1 Comment

bodokaiser Over a year ago

Thank you for the answer! For python3 I was required to change xrange(1, 7) to range(1, 7).

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