gis - Using Python fiona read polygons -

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for now, can use fiona read 1 specific polygon , plot this: 

## read shapefile import fiona import shapely shapely.geometry import shape c = fiona.open("xxx.shp") pol = c.next() geom = shape(pol['geometry']) poly_data = pol["geometry"]["coordinates"][0] poly = polygon(poly_data)

output this:

http://i13.tietuku.com/65d7d9d6a423a5d3.png

but when shapefile composed several shapefile this: 

fig = plt.figure(figsize =(8,6)) ax = plt.gca() map =   basemap(llcrnrlon=114.3,llcrnrlat=37.95,urcrnrlon=114.75,urcrnrlat=38.2) map.readshapefile("xxx",'xxx',zorder =1,) patches=[] cs=plt.cm.blues_r(np.arange(21)/21.) info, shape in zip(map.xxx_info, map.xxx):     x,y=zip(*shape)     patches.append( polygon(np.array(shape), true) )  # facecolor= '#6582b3' ax.add_collection(patchcollection(patches, facecolor= cs,edgecolor='none', linewidths=1.5, zorder=2,alpha = 0.8))

http://i13.tietuku.com/a331edcbeec29d5e.png

i can't use similar code above 4 polygon represent 4 different area.

my question

how use fiona read , transform several fiona.polygon(in example, want 4 polygon). , then, can use each polygon more operation.


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