DOC: Add example for showing colormaps on a real case.

ci/environment-docs.yml

@@ -17,6 +17,7 @@ dependencies:
   - sphinx-gallery
   - sphinx-copybutton
   - sphinx<7.2
+  - arm_pyart
   - pip
   - pip:
       - ablog

examples/plot_convection_cvd_colormaps.py

@@ -0,0 +1,64 @@
+"""
+=========================================================
+Plotting a Convective System using CVD Friendly Colormaps
+=========================================================
+
+This is an example of using both HomeyerRainbow and ChaseSpectral CVD friendly
+colormaps for a convective system in Oklahoma.
+
+"""
+print(__doc__)
+
+# Author: Zach Sherman
+# License: BSD 3 clause
+
+from open_radar_data import DATASETS
+import matplotlib.pyplot as plt
+import pyart
+
+import cmweather  # noqa
+
+######################################
+# **Download and read in the data**
+#
+# First we will read in the example data from the repository open_radar_data
+# by using a built in fetch function to download the data.
+
+file = DATASETS.fetch("110635.nc")
+
+# Read the data using pyart
+radar = pyart.io.read(file)
+
+# Apply a filter to remove ring artifact
+gatefilter = pyart.filters.GateFilter(radar)
+gatefilter.exclude_last_gates("reflectivity", n_gates=7)
+
+######################################
+# **Color Vision Deficiency (CVD) Friendly Colormap HomeyerRainbow**
+#
+# Let's visualize the HomeyerRainbow CVD friendly colormap for the reflectivity
+# moment in our data.
+
+# create the plot using RadarDisplay
+display = pyart.graph.RadarDisplay(radar)
+fig = plt.figure()
+display.plot(
+    "reflectivity", 0, vmin=-16.0, vmax=64, title="PPI", cmap="HomeyerRainbow", gatefilter=gatefilter,
+)
+display.set_limits(ylim=[-150, 150], xlim=[-150, 150])
+plt.show()
+
+#######################################
+# **Color Vision Deficiency (CVD) Friendly Colormap ChaseSpectral**
+#
+# Similar to the previous example, let's visualize the ChaseSpectral CVD
+# friendly colormap
+
+# create the plot using RadarDisplay
+display = pyart.graph.RadarDisplay(radar)
+fig = plt.figure()
+display.plot(
+    "reflectivity", 0, vmin=-16.0, vmax=64, title="PPI", cmap="ChaseSpectral", gatefilter=gatefilter,
+)
+display.set_limits(ylim=[-150, 150], xlim=[-150, 150])
+plt.show()