39 lines
1.2 KiB
Python
39 lines
1.2 KiB
Python
from folium import Map, Marker, PolyLine
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from pandas import DataFrame, json_normalize
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from app.data_request import request_dataset
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from constants import COLUMNS, COORDINATES
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def create_dataframe(dataset) -> DataFrame:
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"""
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Creates a DataFrame from a JSON response
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"""
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json = request_dataset(dataset)
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df = json_normalize(data=json, record_path=["records"], errors="ignore",)
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filtered_df = df.filter(items=COLUMNS[dataset])
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return filtered_df
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def reverse_coordinates(row):
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"""
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Reverses each tuples coordinates to ensure folium can parse them correctly
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"""
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coord = [tuple(reversed(t)) for t in row]
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return coord
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def create_map(df):
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"""
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Creates a Map with markers or lines from the DataFrame
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"""
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m = Map(location=COORDINATES, zoom_start=12, tiles="Stamen Terrain")
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for index, row in df.iterrows():
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if row["fields.geo_shape.type"] == "LineString":
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coord = reverse_coordinates(row["fields.geo_shape.coordinates"])
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PolyLine(locations=coord, color="blue", opacity=0.5).add_to(m)
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else:
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lng, lat = row["fields.geo_shape.coordinates"]
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Marker(location=[lat, lng]).add_to(m)
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m.save("app/templates/map.html")
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