89 lines
3 KiB
Python
Executable file
89 lines
3 KiB
Python
Executable file
#!/usr/bin/env nix-shell
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#! nix-shell -i python3 -p python3
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import csv
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import io
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import json
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import zipfile
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fieldnames = {
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"CO": ("Record Type", "Content Indicator", "File Number", "Registration Number", "Unique System Identifier",
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"Coordinate Type", "Latitude Degrees", "Latitude Minutes", "Latitude Seconds", "Latitude Direction",
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"Latitude_Total_Seconds", "Longitude Degrees", "Longitude Minutes", "Longitude Seconds",
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"Longitude Direction", "Longitude Total Seconds", "Array Tower Position", "Array Total Tower"),
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}
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filenames = ["CO", "EN", "HS", "RA", "RE", "SC"]
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files = {}
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with zipfile.ZipFile("r_tower.zip", "r") as z:
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for filename in filenames:
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with z.open(f"{filename}.dat", "r") as f, io.TextIOWrapper( # Avoids `_csv.Error: iterator should return strings, not bytes (the file should be opened in text mode)`
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f, encoding="utf-8", newline="", errors="replace"
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) as text_f:
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contents = []
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# csv expects text rows; TextIOWrapper decodes bytes from the zip member
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reader = csv.DictReader(text_f, delimiter="|", fieldnames=fieldnames.get(filename))
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for row in reader:
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contents.append(row)
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files[filename] = contents
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# CO data example:
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#{
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# 'Record Type': 'CO',
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# 'Content Indicator': 'REG',
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# 'File Number': 'A0016772',
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# 'Registration Number': '1014003',
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# 'Unique System Identifier': '99845',
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# 'Coordinate Type': 'T',
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# 'Latitude Degrees': '18',
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# 'Latitude Minutes': '26',
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# 'Latitude Seconds': '18.0',
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# 'Latitude Direction': 'N',
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# 'Latitude_Total_Seconds': '66378.0',
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# 'Longitude Degrees': '66',
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# 'Longitude Minutes': '29',
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# 'Longitude Seconds': '53.0',
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# 'Longitude Direction': 'W',
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# 'Longitude Total Seconds': '239393.0',
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# 'Array Tower Position': '',
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# 'Array Total Tower': ''
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# }
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towers = []
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for w in files["CO"]:
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if w['Longitude Degrees'] == '' or w['Latitude Degrees'] == '':
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print(f"Skipping tower with missing coordinates: {w}")
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continue
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towers.append({
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"type": "Feature",
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"geometry": {
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"type": "Point",
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"coordinates": [
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(float(w['Longitude Degrees']) +
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float(w['Longitude Minutes']) / 60 +
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float(w['Longitude Seconds']) / 3600) *
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(-1 if w['Longitude Direction'] == 'W' else 1),
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(float(w['Latitude Degrees']) +
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float(w['Latitude Minutes']) / 60 +
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float(w['Latitude Seconds']) / 3600) *
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(1 if w['Latitude Direction'] == 'N' else -1),
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], # yes, [lon, lat] since it's [x, y]
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},
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"properties": {
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"File Number": w['File Number'],
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"Registration Number": w['Registration Number'],
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"Unique System Identifier": w['Unique System Identifier'],
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},
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})
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print(f"""{len(towers)} towers found""")
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geojson = {
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"type": "FeatureCollection",
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"features": towers,
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}
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with open("data.geojson", "w") as f:
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f.write(json.dumps(geojson))
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