Add example script for making a multi-variable dot plot

Author: mwaskom

examples/pairgrid_dotplot.py

@@ -0,0 +1,38 @@
+"""
+Dot plot with several variables
+===============================
+
+_thumb: .3, .3
+"""
+import seaborn as sns
+sns.set(style="whitegrid")
+
+# Load the dataset
+crashes = sns.load_dataset("car_crashes")
+
+# Make the PairGrid
+g = sns.PairGrid(crashes.sort("total", ascending=False),
+                 x_vars=crashes.columns[:-3], y_vars=["abbrev"],
+                 size=10, aspect=.25)
+
+# Draw a dot plot using the stripplot function
+g.map(sns.stripplot, size=10, orient="h",
+      palette="Reds_r", edgecolor="gray")
+
+# Use the same x axis limits on all columns and add better labels
+g.set(xlim=(0, 25), xlabel="Crashes", ylabel="")
+
+# Use semantically meaningful titles for the columns
+titles = ["Total crashes", "Speeding crashes", "Alcohol crashes",
+          "Not distracted crashes", "No previous crashes"]
+
+for ax, title in zip(g.axes.flat, titles):
+
+    # Set a different title for each axes
+    ax.set(title=title)
+
+    # Make the grid horizontal instead of vertical
+    ax.xaxis.grid(False)
+    ax.yaxis.grid(True)
+
+sns.despine(left=True, bottom=True)