How to pass weights to a Seaborn FacetGrid

Question

I have a set of data that I\'m trying to plot using a FacetGrid in seaborn. Each data point has a weight associated with it, and I want to plot a weighted histogram in each

Answer 1

You'll need to write a little wrapper function around plt.hist that accepts a vector of weights as a positional argument. Something like

def weighted_hist(x, weights, **kwargs):
    plt.hist(x, weights=weights, **kwargs)

g = sns.FacetGrid(df, ...)
g.map(weighted_hist, "x_var", "weight_var")
g.set_axis_labels("x_var", "count")