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plot-freely/polar-plot

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Python
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#!/usr/bin/env python3
#
# polar-plot
#
# Copyright (C) 2022, 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 [filename]
#
# Example:
# ./polar-plot data/sample.csv
# ./polar-plot data/rtl_power-sample.csv
import argparse
import locale
import matplotlib.pyplot as plt
import numpy as np
import pandas as pd
import re
import seaborn as sns
import sys
locale.setlocale(locale.LC_ALL, "en_US.utf8")
plt.rcParams["axes.formatter.use_locale"] = True
def load_samples():
parser = argparse.ArgumentParser(
description="Radio Interference Polar Plotter.",
formatter_class=argparse.RawTextHelpFormatter,
)
parser.add_argument(
"infile",
nargs="?",
type=argparse.FileType("r"),
default=sys.stdin,
help="filename, default stdin",
)
args = parser.parse_args()
datafile = args.infile.name
with open(datafile) as f:
firstline = f.readline().rstrip()
if firstline == "1, -38.93":
print("Test data from sample.csv")
df = pd.read_csv(
datafile, skiprows=0, usecols=[0, 1], names=("Azimuth", "Energy")
)
elif re.match(re.compile("20*"), firstline):
print("rtl_power CSV file. Not yet supported.")
exit()
else:
print("Unknown file type.")
exit()
# Print the Dataframe loaded from CSV
with pd.option_context("display.max_rows", None, "display.max_columns", None):
print(df)
def display_plot():
# (Empty) Plot here
sns.set_theme()
fig = plt.figure(figsize=(8, 8), facecolor="xkcd:off white")
ax = fig.add_subplot(111, projection="polar")
ax.set_facecolor("xkcd:powder blue")
ax.set_title(
"Radio Interference Polar Plot".format("seaborn"),
color="xkcd:cornflower blue",
fontsize="large",
fontweight="bold",
)
ax.set_theta_offset(np.pi / 2.0)
ax.set_rticks([90, 60, 30, 0])
ax.set_rgrids([90, 60, 30, 0], ["", "30$^\circ$", "60$^\circ$", ""], angle=22.5)
ax.grid(True)
ax.bar(0, 90).remove()
ax.set_rmax(90.0)
ax.set_ylim(0.0, 90.0)
plt.tight_layout()
plt.show()
def main():
load_samples()
display_plot()
if __name__ == "__main__":
main()