Meshing: Generate a 3D prism model of the topography¶

"""
Meshing: Generate a 3D prism model of the topography
"""
from fatiando import gridder, utils, mesher
from fatiando.vis import myv

area = (-150, 150, -300, 300)
shape = (100, 50)
x, y = gridder.regular(area, shape)
height = (-80 * utils.gaussian2d(x, y, 100, 200, x0=-50, y0=-100, angle=-60) +
          100 * utils.gaussian2d(x, y, 50, 100, x0=80, y0=170))

nodes = (x, y, -1 * height)  # -1 is to convert height to z coordinate
reference = 0  # z coordinate of the reference surface
relief = mesher.PrismRelief(reference, gridder.spacing(area, shape), nodes)
relief.addprop('density', (2670 for i in xrange(relief.size)))

myv.figure()
myv.prisms(relief, prop='density', edges=False)
axes = myv.axes(myv.outline())
myv.wall_bottom(axes.axes.bounds, opacity=0.2)
myv.wall_north(axes.axes.bounds)
myv.show()