text: from map3d import map3d_surface
  import numpy as np
  from IPython import embed
  
  
  
  
  #user defined inputs
  mode='sphere'
  
  #optional input arguments
  lon_min = -80 
  lon_max = 0
  lat_min = 10
  lat_max = 90
  tlimits=[lon_min, lon_max, lat_min, lat_max]
  zs  = 40000
  tvmin = -100 
  tvmax = 7000
  lcolor = (0.5, 0.52, 0.52)
  
  mlab=map3d_surface(mode,zscale=zs,topo_vmin = tvmin, topo_vmax= tvmax, topo_cmap_reverse=True,land_constant=True,land_color=lcolor)
  embed()
  mlab.show()
  
  