Fixing tex issues in boxplots.

libhts/libhts.py

 from functools import reduce
+from re import sub
 import warnings
 
 
@@ -346,6 +347,10 @@ def plot_counts_distribution(data, xlabel):
 def plot_boxplots(data, ylabel):
     fig = plt.figure(figsize=(6, 12))
     axis = fig.add_subplot(111)
+    usetex = mpl.rcParams.get("text.usetex", False)
+    if usetex:
+        ylabel = sub("_", r"\_", ylabel)
+        data.columns = [sub("_", "\_", colname) for colname in data.columns]
     data.plot.box(ax=axis)
     axis.set_ylabel(ylabel)
     for label in axis.get_xticklabels():