Proper copyright header

README.md

@@ -59,6 +59,12 @@ rx_tools
 * https://github.com/rxseger/rx_tools
 
 
+# Upstream
+Sections of code and clues from Cees Bassa.
+
+Primary author and errors in code from Jeff Moe.
+
+
 # Copyright
 Upstream sources under their respective copyrights.
 

polar-plot

@@ -1,9 +1,32 @@
 #!/usr/bin/env python3
 #
+# polar-plot
+#
+# Copyright (C) 2023, Jeff Moe
+# Copyright (C) 2023, Cees Bassa
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+# polar_plot
+# Generate graphical plot of radio interference.
+#
+# Usage:
 # polar_plot
 #
-# Copyright (C) 2023, Cees Bassa
-# GPLv3+
+# Example:
+# polar_plot
+
 
 import numpy as np
 import matplotlib.pyplot as plt