content: 
  __author__ = 'tjhunter'
  
  import build
  import json
  import pylab as pl
  from matplotlib.collections import LineCollection
  # Draws the network as a pdf and SVG file.
  
  def draw_network(ax, fd, link_style):
    def decode_line(l):
      #print l
      dct = json.loads(l)
      lats = dct['lats']
      lons = dct['lons']
      return zip(lons, lats)
    lines = [decode_line(l) for l in fd]
    #print lines
    xmin = min([x for l in lines for x,y in l])
    xmax = max([x for l in lines for x,y in l])
    ymin = min([y for l in lines for x,y in l])
    ymax = max([y for l in lines for x,y in l])
    lc = LineCollection(lines, **link_style)
    ax.add_collection(lc, autolim=True)
    return ((xmin,xmax),(ymin,ymax))
  
  
  fname = build.data_name('kdd/net_export_6.json')
  fig = pl.figure("fig1",figsize=(10,10))
  ax = fig.gca()
  ax.set_axis_off()
  style = {'colors':'k','linewidths':0.5}
  with open(fname) as f:
    (xlims, ylims) = draw_network(ax, f, style)
    ax.set_xlim(*xlims)
    ax.set_ylim(*ylims)
  # Saving in pdf is a bit slow
  build.save_figure(fig, 'figures-kdd/network_export_6',save_svg=True)
  
  