PairGrid and pairplot for drawing scatterplot (and more!) matrices

[mwaskom]

A new axisgrid object for drawing grids of paired plots. And a corresponding function for doing so easily.

Simple example:

sns.pairplot(iris, hue="species")

More complex example:

g = sns.PairGrid(iris, diag_sharey=False)
g.map_lower(sns.kdeplot, cmap="Blues_d")
g.map_upper(plt.scatter)
g.map_diag(sns.kdeplot, lw=3)

Remaining todos:

• Add more tests
• Update release docs
• Rename set_legend to add_legend (and deal with in re: FacetGrid)

[twiecki]

This is awesome!