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Fix get_test_polygons script

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This commit is contained in:
Tom Russell 2018-09-25 22:01:09 +01:00
parent 342167f9c9
commit 322a976f7a
2 changed files with 15 additions and 3 deletions
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2
.gitignore vendored
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@ -11,4 +11,4 @@ app/start.sh
etl/cache/*
etl/images/*
etl/*.geojson
etl/*.txt
etl/*.csv

16
etl/get_test_polygons.py
View File

@ -8,6 +8,8 @@ Then run:
"""
# -*- coding: utf-8 -*-
import os
import subprocess
import osmnx
# configure logging/caching
@ -28,7 +30,9 @@ fig, ax = osmnx.plot_buildings(gdf_proj, bgcolor='#333333', color='w', figsize=(
filename='test_buildings_preview', dpi=600)
# save
test_data_file = os.path.join(os.path.dirname(__file__), 'test_buildings.csv')
test_dir = os.path.dirname(__file__)
test_data_geojson = str(os.path.join(test_dir, 'test_buildings.geojson'))
subprocess.run(["rm", test_data_geojson])
gdf_to_save = gdf_proj.reset_index(
)[
@ -38,5 +42,13 @@ gdf_to_save = gdf_proj.reset_index(
gdf_to_save.rename(
columns={'index': 'fid'}
).to_file(
test_data_file, driver='CSV'
test_data_geojson, driver='GeoJSON'
)
# convert to CSV
test_data_csv = str(os.path.join(test_dir, 'test_buildings.csv'))
subprocess.run(["rm", test_data_csv])
subprocess.run(["ogr2ogr", "-f", "CSV", test_data_csv, test_data_geojson, "-lco", "GEOMETRY=AS_WKT"])
# add SRID for ease of loading to PostgreSQL
subprocess.run(["sed", "-i", "s/^\"POLYGON/\"SRID=3857;POLYGON/", test_data_csv])