How do I put error bars on only one group in plotnine?
For example, say I have a dataframe:
dat = pd.DataFrame(data={"Type":["A","A","B","B"],"x":[1,2,1,2],"y":[1,2,2,4]})
Type x y
0 A 1 1
1 A 2 2
2 B 1 2
3 B 2 4
I can then plot two lines:
ggplot(dat,aes(x="x",y="y",linetype="Type")) + geom_line()
How woudld I then only add errorbars to A? Or more generally, how do I specify a subset of data in plotnine in subsequent additions to the plot?
Each
geom
layer has adata=
argument which allows to specify the data to be used for this layer, whether from a second dataset or a subset of the global data, i.e. if you want to use only a subset of our data pass a filtered dataset to thedata=
argument.