mybins=np.logspace(0, np.log(100), 100)
g = sns.JointGrid(data1, data2, data, xlim=[.5, 1000000],
ylim=[.1, 10000000])
g.plot_marginals(sns.distplot, color="blue", bins=mybins)
g = g.plot(sns.regplot, sns.distplot)
g = g.annotate(stats.pearsonr)
ax = g.ax_joint
ax.set_xscale('log')
ax.set_yscale('log')
g.ax_marg_x.set_xscale('log')
g.ax_marg_y.set_yscale('log')
This worked just fine. In the end, I decided to just convert my table values into log(x), since that made the graph easier to scale and visualize in the short run.