title: can't locate shapefile in basemap Python
body: <p>I put a shapefile "china.shp" in my working directory, I tried many ways to set the path to file for basemap to read it, like</p>
  
  <pre><code>m3= Basemap(llcrnrlon=77, llcrnrlat=14, urcrnrlon=140, urcrnrlat=51, projection='lcc', lat_1=33, lat_2=45, lon_0=100)
  m3.readshapefile("Y:/Study/Research_Data/geoschem/china",  'china', drawbounds=True)
  plt.show()
  </code></pre>
  
  <p>But the error is always <code>cannot locate Y:/Study/Research_Data/geoschem/china.shx</code></p>
  
  <p>Do you have any idea how to set the path, please? Thanks.</p>