3
我想繪製python上的polygone，使用不同的libararies，但沒有一個與我一起工作。 我試過vincent,Shapely，..現在是matplotlib。 我不想使用軟件一樣qgis如何使用matplotlib繪製地理數據/ python
我用這個例子： http://geographika.co.uk/visualising-geojson-in-15-minutes
編輯：存檔原來的博客文章：https://web.archive.org/web/20160310165846/http://geographika.co.uk/visualising-geojson-in-15-minutes
from matplotlib import pyplot
from descartes import PolygonPatch
import math
import urllib2
import simplejson
data = []
with open('file.json') as f:
for line in f:
data.append(json.loads(line))
def plotFeature(coordlist, myplot):
#create a polygon geojson-like feature
poly = {"type": "Polygon", "coordinates": coordlist}
patch = PolygonPatch(poly, fc='#6699cc', ec='#6699cc', alpha=0.5, zorder=2)
#plot it on the graph
myplot.add_patch(patch)
for coordlist in data['features'][0]['geometry']['coordinates']:
plotFeature(coordlist, myplot)
fig = pyplot.figure(1, figsize=(10, 4), dpi=180)
ax = fig.add_subplot(121)
ax.savefig('myplot.png')
外部文件 「file.json」
var states = [{
"type": "Feature",
"properties": {"party": "Republican"},
"geometry":
{
"type": "Polygon",
"coordinates": [
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]
} } ]
但它似乎並沒有解決。我需要用背景上的地圖來繪製這些座標。任何示例，建議教程，一個建議來解決這個問題？