Question

我有一个 600万行的csv ，我需要将其转换为 geojson 文件。

云解决方案存在于Internet中，但要花费一整天的时间进行转换。
有没有一种快速的方法可以使用python做到这一点？

问题更新：

我尝试了解决方法here，但出现此错误：

ValueError                                Traceback (most recent call last)
<ipython-input-48-0224e45ed66e> in <module>()
  5 with open('Documents/neo4j-community-3.3.5/import/train.csv', newline='') as csvfile:
  6     reader = csv.reader(csvfile, delimiter=',')
----> 7     for pickup_latitude, pickup_longitude in reader:
  8         pickup_latitude,pickup_longitude = map(float,   (pickup_latitude, pickup_longitude))
  9         features.append(

ValueError: too many values to unpack (expected 2)

这是我的代码：

import csv, json
from geojson import Feature, FeatureCollection, Point

features = []
with open('Documents/neo4j-community-3.3.5/import/train.csv', newline='')   as csvfile:
reader = csv.reader(csvfile, delimiter=',')
for pickup_latitude, pickup_longitude in reader:
    pickup_latitude,pickup_longitude = map(float, (pickup_latitude, pickup_longitude))
    features.append(
        Feature(
            geometry = Point((pickup_longitude, pickup_latitude)),

        )
    )

collection = FeatureCollection(features) 
with open("GeoObs.json", "w") as f:
f.write('%s' % collection)

注意：pickup_latitude和Pickup_longitude是我的csv中的两列

Answer 1

该错误意味着csv文件中的列多于for语句期望的两列。要解决此问题，您可以采用所有列，然后仅分析前两列：

for cols in reader:
    pickup_latitude, pickup_longitude = map(float, cols[0:2])

快速将大型csv转换为geojson

1 个答案: