Add GNSS Leaflet script

2022-06-12 21:54:47 -06:00 · 2022-06-12 21:54:47 -06:00 · 8b85cb77a9
parent 9514c3c7d4
commit 8b85cb77a9
1 changed files with 95 additions and 0 deletions
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+++ b/95
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+#!/usr/bin/env python3
+"""
+                         galmon-gnss2leaflet
+    Retrieve Galmon GNSS satellites, output HTML map with leaflet.
+
+    Copyright (C) 2022, Jeff Moe
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Affero 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 Affero General Public License for more details.
+    
+   You should have received a copy of the GNU Affero General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+"""
+
+# Usage:
+# galmon-gnss2leaflet
+# Example:
+# ./galmon-gnss2leaflet > ./html/gnss.html
+# firefox ./html/gnss.html
+
+import pandas as pd
+
+# Grab live file:
+#almanac_url='https://galmon.eu/almanac.json'
+# Or use cached file:
+almanac_url='data/almanac.json'
+
+almanac = pd.read_json(almanac_url, orient='index')
+
+def print_header():
+    print('<!DOCTYPE HTML>')
+    print('<html lang="en">')
+    print('  <head>')
+    print('    <meta charset="utf-8" />')
+    print('    <meta name="viewport" content="width=device-width, initial-scale=1.0">')
+    print('    <script src="leaflet/leaflet.js"></script>')
+    print('    <link rel="stylesheet" href="leaflet/leaflet.css" />')
+    print('    <style>')
+    print('      html, body {')
+    print('        height: 100%;')
+    print('        padding: 0;')
+    print('        margin: 0;')
+    print('      }')
+    print('      #map {')
+    print('        /* configure the size of the map */')
+    print('        width: 100%;')
+    print('        height: 100%;')
+    print('      }')
+    print('    </style>')
+    print('  </head>')
+    print('  <body>')
+    print('    <div id="map"></div>')
+    print('    <script>')
+    print('      var map = L.map(\'map\').setView({lon: 0, lat: 0}, 2);')
+    print('      L.tileLayer(\'https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png\', {')
+    print('        maxZoom: 19,')
+    print('        attribution: \'&copy; <a href="https://openstreetmap.org/copyright">OpenStreetMap contributors</a>', end="")
+    print(' | <a href="https://spacecruft.org/spacecruft/leaflet-galmon">Spacecruft source code</a>\'')
+    print('      }).addTo(map);')
+    print('      L.control.scale({imperial: false, metric: true}).addTo(map);')
+   
+def print_body():
+    df_dict=almanac.reset_index().to_dict(orient='index')
+    df_vals=list(df_dict.values())
+
+    for x in range(len(almanac)):
+        sat_long=(df_vals[x]["eph-longitude"])
+        sat_lat=(df_vals[x]["eph-latitude"])
+        if ( pd.isna(sat_lat) or pd.isna(sat_long) ) == False:
+            print('      L.marker({lon: ', end='')
+            print(sat_long, end='')
+            print(', lat:', sat_lat, end='')
+            print('}).bindPopup(\'', end='')
+            print(df_vals[x]['index'], end='')
+            print('\').addTo(map);')
+
+def print_footer():
+    print('    </script>')
+    print('  </body>')
+    print('</html>')
+
+def main():
+    print_header()
+    print_body()
+    print_footer()
+
+if __name__ == "__main__":
+    main();