text: """
  Vis: Plot a map using the Mercator map projection and pseudo-color
  """
  from fatiando import gridder, utils
  from fatiando.vis import mpl
  
  # Generate some data to plot
  area = (-20, 40, 20, 80)
  shape = (100, 100)
  lon, lat = gridder.regular(area, shape)
  data = utils.gaussian2d(lon, lat, 10, 20, 10, 60, angle=45)
  
  # Now get a basemap to plot with some projection
  bm = mpl.basemap(area, 'merc')
  
  # And now plot everything passing the basemap to the plotting functions
  mpl.figure(figsize=(5,8))
  mpl.pcolor(lon, lat, data, shape, basemap=bm)
  mpl.colorbar()
  bm.drawcoastlines()
  bm.drawmapboundary()
  bm.drawcountries()
  mpl.draw_geolines(area, 10, 10, bm)
  mpl.show()
  
  