Following this simple example, I am trying to make a dirt simple bar chart using yhat's ggplot python module. Here is the code suggested previously on StackOverflow:
In [1]:
from ggplot import *
import pandas as pd
df = pd.DataFrame({"x":[1,2,3,4], "y":[1,3,4,2]})
ggplot(aes(x="x", weight="y"), df) + geom_bar()
But I get an error:
Out[1]:
<repr(<ggplot.ggplot.ggplot at 0x104b18ad0>) failed: UnboundLocalError: local variable 'ax' referenced before assignment>
