From CSV to GeoDataFrame in two lines

Pandas is great for data munging and with the help of GeoPandas, these capabilities expand into the spatial realm.

With just two lines, it’s quick and easy to transform a plain headerless CSV file into a GeoDataFrame. (If your CSV is nice and already contains a header, you can skip the header=None and names=FILE_HEADER parameters.)

usecols=USE_COLS is also optional and allows us to specify that we only want to use a subset of the columns available in the CSV.

After the obligatory imports and setting of variables, all we need to do is read the CSV into a regular DataFrame and then construct a GeoDataFrame.

import pandas as pd
from geopandas import GeoDataFrame
from shapely.geometry import Point

FILE_NAME = "/temp/your.csv"
FILE_HEADER = ['a', 'b', 'c', 'd', 'e', 'x', 'y']
USE_COLS = ['a', 'x', 'y']

df = pd.read_csv(
    FILE_NAME, delimiter=";", header=None,
    names=FILE_HEADER, usecols=USE_COLS)
gdf = GeoDataFrame(
    df.drop(['x', 'y'], axis=1),
    crs={'init': 'epsg:4326'},
    geometry=[Point(xy) for xy in zip(df.x, df.y)])

It’s also possible to create the point objects using a lambda function as shown by weiji14 on GIS.SE.


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