python - python facetgrid with sns.barplot and map; target no overlapping group bars

Question

I am currently implementing a code for facetgrid with subplots of barplots with two different groups ('type'), respectively. I am intending to get a plot, where the different groups are not stacked and not overlapping. I am using following code

g = sns.FacetGrid(data,
            col='C',
            hue = 'type',
            sharex=False,
            sharey=False,
            size=7,
            palette=sns.color_palette(['red','green']),
            )
g = g.map(sns.barplot, 'A', 'B').add_legend()

The data is a pandas long format df with following example structure:

data=pd.DataFrame({'A':['X','X','Y','Y','X','X','Y','Y'],
               'B':[0,1,2,3,4,5,6,7],
               'C':[1,1,1,1,2,2,2,2],
               'type':['ctrl','cond1','ctrl','cond1','ctrl','cond1','ctrl','cond1']}
                )

In the created barplots I get now fully overlapping barplots of the two groups, thus ctrlis missing, see below. However, I am intending to get neighbouring non-overlapping bars each. How to achieve that? My real code has some more bars per plot, where you can see overlapping colors (here fully covered)

标签： pythonbar-chartseabornfacet-grid

Answer 1

this answer shows up how to use FacetGrid directly.

But, if you have 0.9.0 installed, I would recommend you make use of the new catplot() function that will produce the right (at least I think?) plot. Note that this function returns a FacetGrid object. You can pass kwargs to the call to customize the resulting FacetGrid, or modify its properties afterwards.

g = sns.catplot(data=data, x='A', y='B', hue='type', col='C', kind='bar')