add simple diagnostic plot for dailyerosion#115

scripts/plots/plot_wb_snow.py

@@ -1,13 +1,8 @@
 """Diagnose some Water Balance stuff"""
 import sys
-import glob
-import datetime
 
-from tqdm import tqdm
 import pandas as pd
-from scipy import stats
 import seaborn as sns
-from pyiem.plot import figure_axes
 from pyiem.dep import read_wb
 from pyiem.util import get_dbconnstr
 
@@ -33,7 +28,7 @@ def main(argv):
     g.ax.set_xlabel("Snow Depth WEPP (mm)")
     df = df[pd.notnull(df["obs"])]
     b = df["snodpy"].mean() - df["obs"].mean()
-    g.ax.text(0.05, 0.8, "bias:{:.3f}mm".format(b), transform=g.ax.transAxes)
+    g.ax.text(0.05, 0.8, f"bias:{b:.3f}mm", transform=g.ax.transAxes)
     g.fig.subplots_adjust(top=0.95)
     g.fig.savefig("test.png")