我正在尝试使用不同的库在 python 上绘制多边形，但这些库都不适合我。
我试过vincent https://github.com/wrobstory/vincent ,Shapely https://pypi.python.org/pypi/Shapely，..现在是 matplotlib。
我不想使用类似的软件qgis http://www.qgis.org/en/site/
我用了这个例子：http://geographika.co.uk/visualising-geojson-in-15-分钟 http://geographika.co.uk/visualising-geojson-in-15-minutes
EDIT:原始博客文章存档：https://web.archive.org/web/20160310165846/http://geographika.co.uk/visualising-geojson-in-15-minutes 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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]
]
} } ]
但似乎并没有成功。我需要在背景上绘制这些坐标和地图。有什么例子、推荐教程、解决这个问题的建议吗？
