domain.set_boundary({'left': Br, 'right': Br, 'top': Br, 'bottom': Br})

#------------------------------------------------------------------------------
# Evolve system through time
#------------------------------------------------------------------------------
polygon1 = [ [10.0, 0.0], [11.0, 0.0], [11.0, 5.0], [10.0, 5.0] ]
polygon2 = [ [12.0, 2.0], [13.0, 2.0], [13.0, 3.0], [12.0, 3.0] ]

from anuga.operators.rate_operators import Rate_operator

op1 = Rate_operator(domain, rate=lambda t: 10.0 if (t>=0.0) else 0.0, polygon=polygon2)
op2 = Rate_operator(domain, rate=lambda t: 10.0 if (t>=0.0) else 0.0, radius=0.5, center=(10.0, 3.0))


domain.set_starttime(-0.1)
for t in domain.evolve(yieldstep=0.01, finaltime=0.0):
    domain.print_timestepping_statistics()
    domain.print_operator_timestepping_statistics()

    stage = domain.get_quantity('stage')
    elev  = domain.get_quantity('elevation')
    height = stage - elev

    print 'integral = ', height.get_integral()


for t in domain.evolve(yieldstep=0.1, duration=5.0):

    domain.print_timestepping_statistics()
    domain.print_operator_timestepping_statistics()
Exemplo n.º 2
0
    def test_rate_operator_rate_from_file(self):
        from anuga.config import rho_a, rho_w, eta_w
        from math import pi, cos, sin

        a = [0.0, 0.0]
        b = [0.0, 2.0]
        c = [2.0, 0.0]
        d = [0.0, 4.0]
        e = [2.0, 2.0]
        f = [4.0, 0.0]

        points = [a, b, c, d, e, f]
        #             bac,     bce,     ecf,     dbe
        vertices = [[1, 0, 2], [1, 2, 4], [4, 2, 5], [3, 1, 4]]

        #---------------------------------
        #Typical ASCII file
        #---------------------------------
        finaltime = 1200
        filename = 'test_file_function'
        fid = open(filename + '.txt', 'w')
        start = time.mktime(time.strptime('2000', '%Y'))
        dt = 60  #One minute intervals
        t = 0.0
        while t <= finaltime:
            t_string = time.strftime(time_format, time.gmtime(t + start))
            fid.write('%s, %f %f %f\n' %
                      (t_string, 2 * t, t**2, sin(t * pi / 600)))
            t += dt

        fid.close()

        #Convert ASCII file to NetCDF (Which is what we really like!)
        timefile2netcdf(filename + '.txt')

        #Create file function from time series
        F = file_function(
            filename + '.tms',
            quantities=['Attribute0', 'Attribute1', 'Attribute2'])

        #Now try interpolation
        for i in range(20):
            t = i * 10
            q = F(t)

            #Exact linear intpolation
            assert num.allclose(q[0], 2 * t)
            if i % 6 == 0:
                assert num.allclose(q[1], t**2)
                assert num.allclose(q[2], sin(t * pi / 600))

        #Check non-exact

        t = 90  #Halfway between 60 and 120
        q = F(t)
        assert num.allclose((120**2 + 60**2) / 2, q[1])
        assert num.allclose((sin(120 * pi / 600) + sin(60 * pi / 600)) / 2,
                            q[2])

        t = 100  #Two thirds of the way between between 60 and 120
        q = F(t)
        assert num.allclose(2 * 120**2 / 3 + 60**2 / 3, q[1])
        assert num.allclose(
            2 * sin(120 * pi / 600) / 3 + sin(60 * pi / 600) / 3, q[2])

        #os.remove(filename + '.txt')
        #os.remove(filename + '.tms')

        domain = Domain(points, vertices)

        #Flat surface with 1m of water
        domain.set_quantity('elevation', 0)
        domain.set_quantity('stage', 1.0)
        domain.set_quantity('friction', 0)

        Br = Reflective_boundary(domain)
        domain.set_boundary({'exterior': Br})

        #        print domain.quantities['elevation'].centroid_values
        #        print domain.quantities['stage'].centroid_values
        #        print domain.quantities['xmomentum'].centroid_values
        #        print domain.quantities['ymomentum'].centroid_values

        # Apply operator to these triangles
        indices = [0, 1, 3]

        rate = file_function('test_file_function.tms',
                             quantities=['Attribute1'])

        factor = 1000.0
        default_rate = 17.7

        operator = Rate_operator(domain, rate=rate, factor=factor, \
                      indices=indices, default_rate = default_rate)

        # Apply Operator
        domain.set_starttime(360.0)
        domain.timestep = 1.0

        operator()

        d = domain.get_time()**2 * factor + 1.0
        stage_ex0 = [d, d, 1., d]

        #        print d, domain.get_time(), F(360.0)

        #        print domain.quantities['elevation'].centroid_values
        #        print domain.quantities['stage'].centroid_values
        #        print domain.quantities['xmomentum'].centroid_values
        #        print domain.quantities['ymomentum'].centroid_values

        assert num.allclose(domain.quantities['stage'].centroid_values,
                            stage_ex0)
        assert num.allclose(domain.quantities['xmomentum'].centroid_values,
                            0.0)
        assert num.allclose(domain.quantities['ymomentum'].centroid_values,
                            0.0)
        assert num.allclose(domain.fractional_step_volume_integral,
                            ((d - 1.) * domain.areas[indices]).sum())

        domain.set_starttime(-10.0)
        domain.timestep = 1.0

        try:
            operator()
        except:
            pass
        else:
            raise Exception('Should have raised an exception, time too early')

        domain.set_starttime(1300.0)
        domain.timestep = 1.0

        operator()

        d = default_rate * factor + d
        stage_ex1 = [d, d, 1., d]

        #        print domain.quantities['elevation'].centroid_values
        #        print domain.quantities['stage'].centroid_values
        #        print domain.quantities['xmomentum'].centroid_values
        #        print domain.quantities['ymomentum'].centroid_values

        assert num.allclose(domain.quantities['stage'].centroid_values,
                            stage_ex1)
        assert num.allclose(domain.quantities['xmomentum'].centroid_values,
                            0.0)
        assert num.allclose(domain.quantities['ymomentum'].centroid_values,
                            0.0)
        assert num.allclose(domain.fractional_step_volume_integral,
                            ((d - 1.) * domain.areas[indices]).sum())
Exemplo n.º 3
0
    def test_rate_operator_functions_rate_default_rate(self):
        from anuga.config import rho_a, rho_w, eta_w
        from math import pi, cos, sin

        a = [0.0, 0.0]
        b = [0.0, 2.0]
        c = [2.0, 0.0]
        d = [0.0, 4.0]
        e = [2.0, 2.0]
        f = [4.0, 0.0]

        points = [a, b, c, d, e, f]
        #             bac,     bce,     ecf,     dbe
        vertices = [[1, 0, 2], [1, 2, 4], [4, 2, 5], [3, 1, 4]]

        domain = Domain(points, vertices)

        #Flat surface with 1m of water
        domain.set_quantity('elevation', 0)
        domain.set_quantity('stage', 1.0)
        domain.set_quantity('friction', 0)

        Br = Reflective_boundary(domain)
        domain.set_boundary({'exterior': Br})

        verbose = False

        if verbose:
            print domain.quantities['elevation'].centroid_values
            print domain.quantities['stage'].centroid_values
            print domain.quantities['xmomentum'].centroid_values
            print domain.quantities['ymomentum'].centroid_values

        # Apply operator to these triangles
        indices = [0, 1, 3]
        factor = 10.0

        def main_rate(t):
            if t > 20:
                msg = 'Model time exceeded.'
                raise Modeltime_too_late, msg
            else:
                return 3.0 * t + 7.0

        default_rate = lambda t: 3 * t + 7


        operator = Rate_operator(domain, rate=main_rate, factor=factor, \
                      indices=indices, default_rate = default_rate)

        # Apply Operator
        domain.timestep = 2.0
        operator()

        t = operator.get_time()
        d = operator.get_timestep() * main_rate(t) * factor + 1
        stage_ex = [d, d, 1., d]

        if verbose:
            print domain.quantities['elevation'].centroid_values
            print domain.quantities['stage'].centroid_values
            print domain.quantities['xmomentum'].centroid_values
            print domain.quantities['ymomentum'].centroid_values

        assert num.allclose(domain.quantities['stage'].centroid_values,
                            stage_ex)
        assert num.allclose(domain.quantities['xmomentum'].centroid_values,
                            0.0)
        assert num.allclose(domain.quantities['ymomentum'].centroid_values,
                            0.0)
        assert num.allclose(domain.fractional_step_volume_integral,
                            ((d - 1.) * domain.areas[indices]).sum())

        domain.set_starttime(30.0)
        domain.timestep = 1.0
        operator()

        t = operator.get_time()
        d = operator.get_timestep() * default_rate(t) * factor + d
        stage_ex = [d, d, 1., d]

        if verbose:
            print domain.quantities['elevation'].centroid_values
            print domain.quantities['stage'].centroid_values
            print domain.quantities['xmomentum'].centroid_values
            print domain.quantities['ymomentum'].centroid_values

        assert num.allclose(domain.quantities['stage'].centroid_values,
                            stage_ex)
        assert num.allclose(domain.quantities['xmomentum'].centroid_values,
                            0.0)
        assert num.allclose(domain.quantities['ymomentum'].centroid_values,
                            0.0)
    def test_rate_operator_functions_rate_default_rate(self):
        from anuga.config import rho_a, rho_w, eta_w
        from math import pi, cos, sin

        a = [0.0, 0.0]
        b = [0.0, 2.0]
        c = [2.0, 0.0]
        d = [0.0, 4.0]
        e = [2.0, 2.0]
        f = [4.0, 0.0]

        points = [a, b, c, d, e, f]
        #             bac,     bce,     ecf,     dbe
        vertices = [[1,0,2], [1,2,4], [4,2,5], [3,1,4]]

        domain = Domain(points, vertices)

        #Flat surface with 1m of water
        domain.set_quantity('elevation', 0)
        domain.set_quantity('stage', 1.0)
        domain.set_quantity('friction', 0)

        Br = Reflective_boundary(domain)
        domain.set_boundary({'exterior': Br})

        verbose = False
        
        if verbose:
            print domain.quantities['elevation'].centroid_values
            print domain.quantities['stage'].centroid_values
            print domain.quantities['xmomentum'].centroid_values
            print domain.quantities['ymomentum'].centroid_values

        # Apply operator to these triangles
        indices = [0,1,3]
        factor = 10.0


        def main_rate(t):
            if t > 20:
                msg = 'Model time exceeded.'
                raise Modeltime_too_late, msg
            else:
                return 3.0 * t + 7.0

        default_rate = lambda t: 3*t + 7


        operator = Rate_operator(domain, rate=main_rate, factor=factor, \
                      indices=indices, default_rate = default_rate)


        # Apply Operator
        domain.timestep = 2.0
        operator()

        t = operator.get_time()
        d = operator.get_timestep()*main_rate(t)*factor + 1
        stage_ex = [ d,  d,   1.,  d]

        if verbose:
            print domain.quantities['elevation'].centroid_values
            print domain.quantities['stage'].centroid_values
            print domain.quantities['xmomentum'].centroid_values
            print domain.quantities['ymomentum'].centroid_values

        assert num.allclose(domain.quantities['stage'].centroid_values, stage_ex)
        assert num.allclose(domain.quantities['xmomentum'].centroid_values, 0.0)
        assert num.allclose(domain.quantities['ymomentum'].centroid_values, 0.0)
        assert num.allclose(domain.fractional_step_volume_integral, ((d-1.)*domain.areas[indices]).sum())

        domain.set_starttime(30.0)
        domain.timestep = 1.0
        operator()

        t = operator.get_time()
        d = operator.get_timestep()*default_rate(t)*factor + d
        stage_ex = [ d,  d,   1.,  d]

        if verbose:
            print domain.quantities['elevation'].centroid_values
            print domain.quantities['stage'].centroid_values
            print domain.quantities['xmomentum'].centroid_values
            print domain.quantities['ymomentum'].centroid_values

        assert num.allclose(domain.quantities['stage'].centroid_values, stage_ex)
        assert num.allclose(domain.quantities['xmomentum'].centroid_values, 0.0)
        assert num.allclose(domain.quantities['ymomentum'].centroid_values, 0.0)
Exemplo n.º 5
0
    def test_rate_operator_rate_from_file(self):
        from anuga.config import rho_a, rho_w, eta_w
        from math import pi, cos, sin

        a = [0.0, 0.0]
        b = [0.0, 2.0]
        c = [2.0, 0.0]
        d = [0.0, 4.0]
        e = [2.0, 2.0]
        f = [4.0, 0.0]

        points = [a, b, c, d, e, f]
        #             bac,     bce,     ecf,     dbe
        vertices = [[1, 0, 2], [1, 2, 4], [4, 2, 5], [3, 1, 4]]

        #---------------------------------
        #Typical ASCII file
        #---------------------------------
        finaltime = 1200
        filename = 'test_file_function'
        fid = open(filename + '.txt', 'w')
        start = time.mktime(time.strptime('2000', '%Y'))
        dt = 60  #One minute intervals
        t = 0.0
        while t <= finaltime:
            t_string = time.strftime(time_format, time.gmtime(t + start))
            fid.write('%s, %f %f %f\n' %
                      (t_string, 2 * t, t**2, sin(old_div(t * pi, 600))))
            t += dt

        fid.close()

        #Convert ASCII file to NetCDF (Which is what we really like!)
        timefile2netcdf(filename + '.txt')

        #Create file function from time series
        F = file_function(
            filename + '.tms',
            quantities=['Attribute0', 'Attribute1', 'Attribute2'])

        #Now try interpolation
        for i in range(20):
            t = i * 10
            q = F(t)

            #Exact linear intpolation
            assert num.allclose(q[0], 2 * t)
            if i % 6 == 0:
                assert num.allclose(q[1], t**2)
                assert num.allclose(q[2], sin(old_div(t * pi, 600)))

        #Check non-exact

        t = 90  #Halfway between 60 and 120
        q = F(t)
        assert num.allclose(old_div((120**2 + 60**2), 2), q[1])
        assert num.allclose(
            old_div((sin(old_div(120 * pi, 600)) + sin(old_div(60 * pi, 600))),
                    2), q[2])

        t = 100  #Two thirds of the way between between 60 and 120
        q = F(t)
        assert num.allclose(old_div(2 * 120**2, 3) + old_div(60**2, 3), q[1])
        assert num.allclose(
            old_div(2 * sin(old_div(120 * pi, 600)), 3) +
            old_div(sin(old_div(60 * pi, 600)), 3), q[2])

        #os.remove(filename + '.txt')
        #os.remove(filename + '.tms')

        domain = Domain(points, vertices)

        #Flat surface with 1m of water
        domain.set_quantity('elevation', 0)
        domain.set_quantity('stage', 1.0)
        domain.set_quantity('friction', 0)

        Br = Reflective_boundary(domain)
        domain.set_boundary({'exterior': Br})

        #        print domain.quantities['elevation'].centroid_values
        #        print domain.quantities['stage'].centroid_values
        #        print domain.quantities['xmomentum'].centroid_values
        #        print domain.quantities['ymomentum'].centroid_values

        # Apply operator to these triangles
        indices = [0, 1, 3]

        rate = file_function(filename + '.tms', quantities=['Attribute1'])

        # Make starttime of domain consistent with tms file starttime
        domain.set_starttime(rate.starttime)

        factor = 1000.0
        default_rate = 17.7

        operator = Rate_operator(domain, rate=rate, factor=factor, \
                      indices=indices, default_rate = default_rate)

        # Apply Operator
        domain.set_time(360.0)
        domain.timestep = 1.0

        operator()

        d = domain.get_time()**2 * factor + 1.0
        stage_ex0 = [d, d, 1., d]

        #        print d, domain.get_time(), F(360.0)

        #        print domain.quantities['elevation'].centroid_values
        #        print domain.quantities['stage'].centroid_values
        #        print domain.quantities['xmomentum'].centroid_values
        #        print domain.quantities['ymomentum'].centroid_values

        assert num.allclose(domain.quantities['stage'].centroid_values,
                            stage_ex0)
        assert num.allclose(domain.quantities['xmomentum'].centroid_values,
                            0.0)
        assert num.allclose(domain.quantities['ymomentum'].centroid_values,
                            0.0)
        assert num.allclose(domain.fractional_step_volume_integral,
                            ((d - 1.) * domain.areas[indices]).sum())

        domain.set_time(1300.0)
        domain.timestep = 1.0

        operator()

        d = default_rate * factor + d
        stage_ex1 = [d, d, 1., d]

        #         print domain.quantities['elevation'].centroid_values
        #         print domain.quantities['stage'].centroid_values
        #         print domain.quantities['xmomentum'].centroid_values
        #         print domain.quantities['ymomentum'].centroid_values

        assert num.allclose(domain.quantities['stage'].centroid_values,
                            stage_ex1)
        assert num.allclose(domain.quantities['xmomentum'].centroid_values,
                            0.0)
        assert num.allclose(domain.quantities['ymomentum'].centroid_values,
                            0.0)
        assert num.allclose(domain.fractional_step_volume_integral,
                            ((d - 1.) * domain.areas[indices]).sum())

        tmp = numpy.zeros_like(domain.quantities['stage'].centroid_values)
        tmp[:] = domain.quantities['stage'].centroid_values

        d0 = domain.fractional_step_volume_integral

        domain.set_time(-10.0)
        domain.timestep = 1.0

        operator()

        d = default_rate * factor
        stage_ex2 = numpy.array([d, d, 0., d]) + numpy.array(stage_ex1)

        assert num.allclose(domain.quantities['stage'].centroid_values,
                            stage_ex2)
        assert num.allclose(domain.quantities['xmomentum'].centroid_values,
                            0.0)
        assert num.allclose(domain.quantities['ymomentum'].centroid_values,
                            0.0)
        assert num.allclose(domain.fractional_step_volume_integral,
                            d0 + (d * domain.areas[indices]).sum())

        # test timestepping_statistics
        stats = operator.timestepping_statistics()
        import re
        rr = re.findall("[-+]?[.]?[\d]+(?:,\d\d\d)*[\.]?\d*(?:[eE][-+]?\d+)?",
                        stats)
        assert num.allclose(float(rr[1]), 17.7)
        assert num.allclose(float(rr[2]), 106200.0)
    def test_rate_operator_rate_from_file(self):
        from anuga.config import rho_a, rho_w, eta_w
        from math import pi, cos, sin

        a = [0.0, 0.0]
        b = [0.0, 2.0]
        c = [2.0, 0.0]
        d = [0.0, 4.0]
        e = [2.0, 2.0]
        f = [4.0, 0.0]

        points = [a, b, c, d, e, f]
        #             bac,     bce,     ecf,     dbe
        vertices = [[1,0,2], [1,2,4], [4,2,5], [3,1,4]]


        #---------------------------------
        #Typical ASCII file
        #---------------------------------
        finaltime = 1200
        filename = 'test_file_function'
        fid = open(filename + '.txt', 'w')
        start = time.mktime(time.strptime('2000', '%Y'))
        dt = 60  #One minute intervals
        t = 0.0
        while t <= finaltime:
            t_string = time.strftime(time_format, time.gmtime(t+start))
            fid.write('%s, %f %f %f\n' %(t_string, 2*t, t**2, sin(t*pi/600)))
            t += dt

        fid.close()

        #Convert ASCII file to NetCDF (Which is what we really like!)
        timefile2netcdf(filename+'.txt')


        #Create file function from time series
        F = file_function(filename + '.tms',
                          quantities = ['Attribute0',
                                        'Attribute1',
                                        'Attribute2'])


        #Now try interpolation
        for i in range(20):
            t = i*10
            q = F(t)

            #Exact linear intpolation
            assert num.allclose(q[0], 2*t)
            if i%6 == 0:
                assert num.allclose(q[1], t**2)
                assert num.allclose(q[2], sin(t*pi/600))

        #Check non-exact

        t = 90 #Halfway between 60 and 120
        q = F(t)
        assert num.allclose( (120**2 + 60**2)/2, q[1] )
        assert num.allclose( (sin(120*pi/600) + sin(60*pi/600))/2, q[2] )


        t = 100 #Two thirds of the way between between 60 and 120
        q = F(t)
        assert num.allclose( 2*120**2/3 + 60**2/3, q[1] )
        assert num.allclose( 2*sin(120*pi/600)/3 + sin(60*pi/600)/3, q[2] )

        #os.remove(filename + '.txt')
        #os.remove(filename + '.tms')


        domain = Domain(points, vertices)

        #Flat surface with 1m of water
        domain.set_quantity('elevation', 0)
        domain.set_quantity('stage', 1.0)
        domain.set_quantity('friction', 0)

        Br = Reflective_boundary(domain)
        domain.set_boundary({'exterior': Br})

#        print domain.quantities['elevation'].centroid_values
#        print domain.quantities['stage'].centroid_values
#        print domain.quantities['xmomentum'].centroid_values
#        print domain.quantities['ymomentum'].centroid_values

        # Apply operator to these triangles
        indices = [0,1,3]


        rate = file_function(filename + '.tms', quantities=['Attribute1'])
        

        # Make starttime of domain consistent with tms file starttime
        domain.set_starttime(rate.starttime)
                    
        factor = 1000.0
        default_rate= 17.7

        operator = Rate_operator(domain, rate=rate, factor=factor, \
                      indices=indices, default_rate = default_rate)


        # Apply Operator
        domain.set_time(360.0)
        domain.timestep = 1.0

        operator()



        d = domain.get_time()**2 * factor + 1.0
        stage_ex0 = [ d,  d,   1.,  d]

#        print d, domain.get_time(), F(360.0)

#        print domain.quantities['elevation'].centroid_values
#        print domain.quantities['stage'].centroid_values
#        print domain.quantities['xmomentum'].centroid_values
#        print domain.quantities['ymomentum'].centroid_values

        assert num.allclose(domain.quantities['stage'].centroid_values, stage_ex0)
        assert num.allclose(domain.quantities['xmomentum'].centroid_values, 0.0)
        assert num.allclose(domain.quantities['ymomentum'].centroid_values, 0.0)
        assert num.allclose(domain.fractional_step_volume_integral, ((d-1.)*domain.areas[indices]).sum())


        domain.set_time(-10.0)
        domain.timestep = 1.0

        try:
            operator()
        except:
            pass
        else:
            raise Exception('Should have raised an exception, time too early')


        domain.set_time(1300.0)
        domain.timestep = 1.0

        operator()

        d = default_rate*factor + d
        stage_ex1 = [ d,  d,   1.,  d]

#        print domain.quantities['elevation'].centroid_values
#        print domain.quantities['stage'].centroid_values
#        print domain.quantities['xmomentum'].centroid_values
#        print domain.quantities['ymomentum'].centroid_values

        assert num.allclose(domain.quantities['stage'].centroid_values, stage_ex1)
        assert num.allclose(domain.quantities['xmomentum'].centroid_values, 0.0)
        assert num.allclose(domain.quantities['ymomentum'].centroid_values, 0.0)
        assert num.allclose(domain.fractional_step_volume_integral, ((d-1.)*domain.areas[indices]).sum())
    def sequential_time_varying_file_boundary_sts(self):
        """sequential_ltest_time_varying_file_boundary_sts_sequential(self):
        Read correct points from ordering file and apply sts to boundary. The boundary is time varying. FIXME add to test_urs2sts.
        """
        lat_long_points = [[6.01, 97.0], [6.02, 97.0], [6.05, 96.9],
                           [6.0, 97.0]]
        bounding_polygon = [[6.0, 97.0], [6.01, 97.0], [6.02, 97.0],
                            [6.02, 97.02], [6.00, 97.02]]
        tide = 3.0
        time_step_count = 65
        time_step = 2.
        n = len(lat_long_points)
        first_tstep = num.ones(n, num.int)
        last_tstep = (time_step_count) * num.ones(n, num.int)
        finaltime = num.float(time_step * (time_step_count - 1))
        yieldstep = num.float(time_step)
        gauge_depth = 20 * num.ones(n, num.float)
        ha = 2 * num.ones((n, time_step_count), num.float)
        ua = 10 * num.ones((n, time_step_count), num.float)
        va = -10 * num.ones((n, time_step_count), num.float)

        times = num.arange(0., num.float(time_step_count * time_step),
                           time_step)
        for i in range(n):
            #ha[i]+=num.sin(times)
            ha[i] += times / finaltime

        sts_file = "test"
        if myid == 0:
            base_name, files = self.write_mux2(lat_long_points,
                                               time_step_count,
                                               time_step,
                                               first_tstep,
                                               last_tstep,
                                               depth=gauge_depth,
                                               ha=ha,
                                               ua=ua,
                                               va=va)
            # base name will not exist, but 3 other files are created

            # Write order file
            file_handle, order_base_name = tempfile.mkstemp("")
            os.close(file_handle)
            os.remove(order_base_name)
            d = ","
            order_file = order_base_name + 'order.txt'
            fid = open(order_file, 'w')

            # Write Header
            header = 'index, longitude, latitude\n'
            fid.write(header)
            indices = [3, 0, 1]
            for i in indices:
                line=str(i)+d+str(lat_long_points[i][1])+d+\
                    str(lat_long_points[i][0])+"\n"
                fid.write(line)
            fid.close()

            urs2sts(base_name,
                    basename_out=sts_file,
                    ordering_filename=order_file,
                    mean_stage=tide,
                    verbose=verbose)
            self.delete_mux(files)

            assert (os.access(sts_file + '.sts', os.F_OK))

            os.remove(order_file)

        barrier()
        boundary_polygon = create_sts_boundary(sts_file)

        # Append the remaining part of the boundary polygon to be defined by
        # the user
        bounding_polygon_utm = []
        for point in bounding_polygon:
            zone, easting, northing = redfearn(point[0], point[1])
            bounding_polygon_utm.append([easting, northing])

        boundary_polygon.append(bounding_polygon_utm[3])
        boundary_polygon.append(bounding_polygon_utm[4])

        assert num.allclose(bounding_polygon_utm, boundary_polygon)

        extent_res = 1000000
        meshname = 'urs_test_mesh' + '.tsh'
        interior_regions = None
        boundary_tags = {'ocean': [0, 1], 'otherocean': [2, 3, 4]}

        # have to change boundary tags from last example because now bounding
        # polygon starts in different place.
        if myid == 0:
            create_mesh_from_regions(boundary_polygon,
                                     boundary_tags=boundary_tags,
                                     maximum_triangle_area=extent_res,
                                     filename=meshname,
                                     interior_regions=interior_regions,
                                     verbose=verbose)

        barrier()

        domain_fbound = Domain(meshname)
        domain_fbound.set_quantities_to_be_stored(None)
        domain_fbound.set_quantity('stage', tide)
        if verbose: print "Creating file boundary condition"
        Bf = File_boundary(sts_file + '.sts',
                           domain_fbound,
                           boundary_polygon=boundary_polygon)
        Br = Reflective_boundary(domain_fbound)

        domain_fbound.set_boundary({'ocean': Bf, 'otherocean': Br})

        temp_fbound = num.zeros(int(finaltime / yieldstep) + 1, num.float)
        if verbose: print "Evolving domain with file boundary condition"
        for i, t in enumerate(
                domain_fbound.evolve(yieldstep=yieldstep,
                                     finaltime=finaltime,
                                     skip_initial_step=False)):
            temp_fbound[i] = domain_fbound.quantities['stage'].centroid_values[
                2]
            if verbose: domain_fbound.write_time()

        domain_drchlt = Domain(meshname)
        domain_drchlt.set_quantities_to_be_stored(None)
        domain_drchlt.set_starttime(time_step)
        domain_drchlt.set_quantity('stage', tide)
        Br = Reflective_boundary(domain_drchlt)
        #Bd = Dirichlet_boundary([2.0+tide,220+10*tide,-220-10*tide])
        Bd = Time_boundary(
            domain=domain_drchlt,
            f=lambda t: [
                2.0 + t / finaltime + tide, 220. + 10. * tide + 10. * t /
                finaltime, -220. - 10. * tide - 10. * t / finaltime
            ])
        #Bd = Time_boundary(domain=domain_drchlt,f=lambda t: [2.0+num.sin(t)+tide,10.*(2+20.+num.sin(t)+tide),-10.*(2+20.+num.sin(t)+tide)])
        domain_drchlt.set_boundary({'ocean': Bd, 'otherocean': Br})
        temp_drchlt = num.zeros(int(finaltime / yieldstep) + 1, num.float)

        for i, t in enumerate(
                domain_drchlt.evolve(yieldstep=yieldstep,
                                     finaltime=finaltime,
                                     skip_initial_step=False)):
            temp_drchlt[i] = domain_drchlt.quantities['stage'].centroid_values[
                2]
            #domain_drchlt.write_time()

        #print domain_fbound.quantities['stage'].vertex_values
        #print domain_drchlt.quantities['stage'].vertex_values

        assert num.allclose(temp_fbound,
                            temp_drchlt), temp_fbound - temp_drchlt

        assert num.allclose(domain_fbound.quantities['stage'].vertex_values,
                            domain_drchlt.quantities['stage'].vertex_values)

        assert num.allclose(
            domain_fbound.quantities['xmomentum'].vertex_values,
            domain_drchlt.quantities['xmomentum'].vertex_values)

        assert num.allclose(
            domain_fbound.quantities['ymomentum'].vertex_values,
            domain_drchlt.quantities['ymomentum'].vertex_values)

        if not sys.platform == 'win32':
            if myid == 0: os.remove(sts_file + '.sts')

        if myid == 0: os.remove(meshname)
    def parallel_time_varying_file_boundary_sts(self):
        """ parallel_test_time_varying_file_boundary_sts_sequential(self):
            Read correct points from ordering file and apply sts to boundary. 
            The boundary is time varying. Compares sequential result with 
            distributed result found using anuga_parallel
        """

        #------------------------------------------------------------
        # Define test variables
        #------------------------------------------------------------
        lat_long_points = [[6.01, 97.0], [6.02, 97.0], [6.05, 96.9],
                           [6.0, 97.0]]
        bounding_polygon = [[6.0, 97.0], [6.01, 97.0], [6.02, 97.0],
                            [6.02, 97.02], [6.00, 97.02]]
        tide = 3.0
        time_step_count = 65
        time_step = 2
        n = len(lat_long_points)
        first_tstep = num.ones(n, num.int)
        last_tstep = (time_step_count) * num.ones(n, num.int)
        finaltime = num.float(time_step * (time_step_count - 1))
        yieldstep = num.float(time_step)
        gauge_depth = 20 * num.ones(n, num.float)
        ha = 2 * num.ones((n, time_step_count), num.float)
        ua = 10 * num.ones((n, time_step_count), num.float)
        va = -10 * num.ones((n, time_step_count), num.float)

        times = num.arange(0, time_step_count * time_step, time_step)
        for i in range(n):
            #ha[i]+=num.sin(times)
            ha[i] += times / finaltime

        #------------------------------------------------------------
        # Write mux data to file then convert to sts format
        #------------------------------------------------------------
        sts_file = "test"
        if myid == 0:
            base_name, files = self.write_mux2(lat_long_points,
                                               time_step_count,
                                               time_step,
                                               first_tstep,
                                               last_tstep,
                                               depth=gauge_depth,
                                               ha=ha,
                                               ua=ua,
                                               va=va)
            # base name will not exist, but 3 other files are created

            # Write order file
            file_handle, order_base_name = tempfile.mkstemp("")
            os.close(file_handle)
            os.remove(order_base_name)
            d = ","
            order_file = order_base_name + 'order.txt'
            fid = open(order_file, 'w')

            # Write Header
            header = 'index, longitude, latitude\n'
            fid.write(header)
            indices = [3, 0, 1]
            for i in indices:
                line=str(i)+d+str(lat_long_points[i][1])+d+\
                    str(lat_long_points[i][0])+"\n"
                fid.write(line)
            fid.close()

            urs2sts(base_name,
                    basename_out=sts_file,
                    ordering_filename=order_file,
                    mean_stage=tide,
                    verbose=verbose)
            self.delete_mux(files)

            assert (os.access(sts_file + '.sts', os.F_OK))

            os.remove(order_file)

        barrier()
        #------------------------------------------------------------
        # Define boundary_polygon on each processor. This polygon defines the
        # urs boundary and lies on a portion of the bounding_polygon
        #------------------------------------------------------------
        boundary_polygon = create_sts_boundary(sts_file)

        # Append the remaining part of the boundary polygon to be defined by
        # the user
        bounding_polygon_utm = []
        for point in bounding_polygon:
            zone, easting, northing = redfearn(point[0], point[1])
            bounding_polygon_utm.append([easting, northing])

        boundary_polygon.append(bounding_polygon_utm[3])
        boundary_polygon.append(bounding_polygon_utm[4])

        assert num.allclose(bounding_polygon_utm, boundary_polygon)

        extent_res = 10000
        meshname = 'urs_test_mesh' + '.tsh'
        interior_regions = None
        boundary_tags = {'ocean': [0, 1], 'otherocean': [2, 3, 4]}

        #------------------------------------------------------------
        # Create mesh on the master processor and store in file. This file
        # is read in by each slave processor when needed
        #------------------------------------------------------------
        if myid == 0:
            create_mesh_from_regions(boundary_polygon,
                                     boundary_tags=boundary_tags,
                                     maximum_triangle_area=extent_res,
                                     filename=meshname,
                                     interior_regions=interior_regions,
                                     verbose=verbose)

            # barrier()
            domain_fbound = Domain(meshname)
            domain_fbound.set_quantities_to_be_stored(None)
            domain_fbound.set_quantity('stage', tide)
            # print domain_fbound.mesh.get_boundary_polygon()
        else:
            domain_fbound = None

        barrier()
        if (verbose and myid == 0):
            print 'DISTRIBUTING PARALLEL DOMAIN'
        domain_fbound = distribute(domain_fbound)

        #--------------------------------------------------------------------
        # Find which sub_domain in which the interpolation points are located
        #
        # Sometimes the interpolation points sit exactly
        # between two centroids, so in the parallel run we
        # reset the interpolation points to the centroids
        # found in the sequential run
        #--------------------------------------------------------------------
        interpolation_points = [[279000, 664000], [280250, 664130],
                                [279280, 665400], [280500, 665000]]

        interpolation_points = num.array(interpolation_points)

        #if myid==0:
        #    import pylab as P
        #    boundary_polygon=num.array(boundary_polygon)
        #    P.plot(boundary_polygon[:,0],boundary_polygon[:,1])
        #    P.plot(interpolation_points[:,0],interpolation_points[:,1],'ko')
        #    P.show()

        fbound_gauge_values = []
        fbound_proc_tri_ids = []
        for i, point in enumerate(interpolation_points):
            fbound_gauge_values.append([])  # Empty list for timeseries

            try:
                k = domain_fbound.get_triangle_containing_point(point)
                if domain_fbound.tri_full_flag[k] == 1:
                    fbound_proc_tri_ids.append(k)
                else:
                    fbound_proc_tri_ids.append(-1)
            except:
                fbound_proc_tri_ids.append(-2)

        if verbose: print 'P%d has points = %s' % (myid, fbound_proc_tri_ids)

        #------------------------------------------------------------
        # Set boundary conditions
        #------------------------------------------------------------
        Bf = File_boundary(sts_file + '.sts',
                           domain_fbound,
                           boundary_polygon=boundary_polygon)
        Br = Reflective_boundary(domain_fbound)

        domain_fbound.set_boundary({'ocean': Bf, 'otherocean': Br})

        #------------------------------------------------------------
        # Evolve the domain on each processor
        #------------------------------------------------------------
        for i, t in enumerate(
                domain_fbound.evolve(yieldstep=yieldstep,
                                     finaltime=finaltime,
                                     skip_initial_step=False)):

            stage = domain_fbound.get_quantity('stage')
            for i in range(4):
                if fbound_proc_tri_ids[i] > -1:
                    fbound_gauge_values[i].append(
                        stage.centroid_values[fbound_proc_tri_ids[i]])

        #------------------------------------------------------------
        # Create domain to be run sequntially on each processor
        #------------------------------------------------------------
        domain_drchlt = Domain(meshname)
        domain_drchlt.set_quantities_to_be_stored(None)
        domain_drchlt.set_starttime(time_step)
        domain_drchlt.set_quantity('stage', tide)
        Br = Reflective_boundary(domain_drchlt)
        #Bd = Dirichlet_boundary([2.0+tide,220+10*tide,-220-10*tide])
        Bd = Time_boundary(
            domain=domain_drchlt,
            function=lambda t: [
                2.0 + t / finaltime + tide, 220. + 10. * tide + 10. * t /
                finaltime, -220. - 10. * tide - 10. * t / finaltime
            ])
        #Bd = Time_boundary(domain=domain_drchlt,function=lambda t: [2.0+num.sin(t)+tide,10.*(2+20.+num.sin(t)+tide),-10.*(2+20.+num.sin(t)+tide)])
        domain_drchlt.set_boundary({'ocean': Bd, 'otherocean': Br})

        drchlt_gauge_values = []
        drchlt_proc_tri_ids = []
        for i, point in enumerate(interpolation_points):
            drchlt_gauge_values.append([])  # Empty list for timeseries

            try:
                k = domain_drchlt.get_triangle_containing_point(point)
                if domain_drchlt.tri_full_flag[k] == 1:
                    drchlt_proc_tri_ids.append(k)
                else:
                    drchlt_proc_tri_ids.append(-1)
            except:
                drchlt_proc_tri_ids.append(-2)

        if verbose: print 'P%d has points = %s' % (myid, drchlt_proc_tri_ids)

        #------------------------------------------------------------
        # Evolve entire domain on each processor
        #------------------------------------------------------------
        for i, t in enumerate(
                domain_drchlt.evolve(yieldstep=yieldstep,
                                     finaltime=finaltime,
                                     skip_initial_step=False)):

            stage = domain_drchlt.get_quantity('stage')
            for i in range(4):
                drchlt_gauge_values[i].append(
                    stage.centroid_values[drchlt_proc_tri_ids[i]])

        #------------------------------------------------------------
        # Compare sequential values with parallel values
        #------------------------------------------------------------
        barrier()
        success = True
        for i in range(4):
            if fbound_proc_tri_ids[i] > -1:
                fbound_gauge_values[i] = num.array(fbound_gauge_values[i])
                drchlt_gauge_values[i] = num.array(drchlt_gauge_values[i])
                #print i,fbound_gauge_values[i][4]
                #print i,drchlt_gauge_values[i][4]
                success = success and num.allclose(fbound_gauge_values[i],
                                                   drchlt_gauge_values[i])
                assert success  #, (fbound_gauge_values[i]-drchlt_gauge_values[i])

        #assert_(success)

        if not sys.platform == 'win32':
            if myid == 0: os.remove(sts_file + '.sts')

        if myid == 0: os.remove(meshname)
    def sequential_time_varying_file_boundary_sts(self):
        """sequential_ltest_time_varying_file_boundary_sts_sequential(self):
        Read correct points from ordering file and apply sts to boundary. The boundary is time varying. FIXME add to test_urs2sts.
        """
        lat_long_points=[[6.01,97.0],[6.02,97.0],[6.05,96.9],[6.0,97.0]]
        bounding_polygon=[[6.0,97.0],[6.01,97.0],[6.02,97.0],
                          [6.02,97.02],[6.00,97.02]]
        tide = 3.0
        time_step_count = 65
        time_step = 2.
        n=len(lat_long_points)
        first_tstep=num.ones(n,num.int)
        last_tstep=(time_step_count)*num.ones(n,num.int)
        finaltime=num.float(time_step*(time_step_count-1))
        yieldstep=num.float(time_step)
        gauge_depth=20*num.ones(n,num.float)
        ha=2*num.ones((n,time_step_count),num.float)
        ua=10*num.ones((n,time_step_count),num.float)
        va=-10*num.ones((n,time_step_count),num.float)

        times=num.arange(0., num.float(time_step_count*time_step), time_step)
        for i in range(n):
            #ha[i]+=num.sin(times)
            ha[i]+=times/finaltime



        sts_file="test"
        if myid==0:
            base_name, files = self.write_mux2(lat_long_points,
                                               time_step_count,
                                               time_step,
                                               first_tstep,
                                               last_tstep,
                                               depth=gauge_depth,
                                               ha=ha,
                                               ua=ua,
                                               va=va)
            # base name will not exist, but 3 other files are created

            # Write order file
            file_handle, order_base_name = tempfile.mkstemp("")
            os.close(file_handle)
            os.remove(order_base_name)
            d=","
            order_file=order_base_name+'order.txt'
            fid=open(order_file,'w')
        
            # Write Header
            header='index, longitude, latitude\n'
            fid.write(header)
            indices=[3,0,1]
            for i in indices:
                line=str(i)+d+str(lat_long_points[i][1])+d+\
                    str(lat_long_points[i][0])+"\n"
                fid.write(line)
            fid.close()

            urs2sts(base_name,
                    basename_out=sts_file,
                    ordering_filename=order_file,
                    mean_stage=tide,
                    verbose=verbose)
            self.delete_mux(files)

            assert(os.access(sts_file+'.sts', os.F_OK))

            os.remove(order_file)

        barrier()
        boundary_polygon = create_sts_boundary(sts_file)

        # Append the remaining part of the boundary polygon to be defined by
        # the user
        bounding_polygon_utm=[]
        for point in bounding_polygon:
            zone,easting,northing=redfearn(point[0],point[1])
            bounding_polygon_utm.append([easting,northing])

        boundary_polygon.append(bounding_polygon_utm[3])
        boundary_polygon.append(bounding_polygon_utm[4])

        assert num.allclose(bounding_polygon_utm,boundary_polygon)


        extent_res=1000000
        meshname = 'urs_test_mesh' + '.tsh'
        interior_regions=None
        boundary_tags={'ocean': [0,1], 'otherocean': [2,3,4]}
        
        # have to change boundary tags from last example because now bounding
        # polygon starts in different place.
        if myid==0:
            create_mesh_from_regions(boundary_polygon,
                                     boundary_tags=boundary_tags,
                                     maximum_triangle_area=extent_res,
                                     filename=meshname,
                                     interior_regions=interior_regions,
                                     verbose=verbose)

        barrier()
        
        domain_fbound = Domain(meshname)
        domain_fbound.set_quantities_to_be_stored(None)
        domain_fbound.set_quantity('stage', tide)
        if verbose: print "Creating file boundary condition"
        Bf = File_boundary(sts_file+'.sts',
                           domain_fbound,
                           boundary_polygon=boundary_polygon)
        Br = Reflective_boundary(domain_fbound)

        domain_fbound.set_boundary({'ocean': Bf,'otherocean': Br})

        temp_fbound=num.zeros(int(finaltime/yieldstep)+1,num.float)
        if verbose: print "Evolving domain with file boundary condition"
        for i, t in enumerate(domain_fbound.evolve(yieldstep=yieldstep,
                                                   finaltime=finaltime, 
                                                   skip_initial_step = False)):
            temp_fbound[i]=domain_fbound.quantities['stage'].centroid_values[2]
            if verbose: domain_fbound.write_time()
            
        
        domain_drchlt = Domain(meshname)
        domain_drchlt.set_quantities_to_be_stored(None)
        domain_drchlt.set_starttime(time_step)
        domain_drchlt.set_quantity('stage', tide)
        Br = Reflective_boundary(domain_drchlt)
        #Bd = Dirichlet_boundary([2.0+tide,220+10*tide,-220-10*tide])
        Bd = Time_boundary(domain=domain_drchlt, f=lambda t: [2.0+t/finaltime+tide,220.+10.*tide+10.*t/finaltime,-220.-10.*tide-10.*t/finaltime])
        #Bd = Time_boundary(domain=domain_drchlt,f=lambda t: [2.0+num.sin(t)+tide,10.*(2+20.+num.sin(t)+tide),-10.*(2+20.+num.sin(t)+tide)])
        domain_drchlt.set_boundary({'ocean': Bd,'otherocean': Br})
        temp_drchlt=num.zeros(int(finaltime/yieldstep)+1,num.float)
        
        for i, t in enumerate(domain_drchlt.evolve(yieldstep=yieldstep,
                                                   finaltime=finaltime, 
                                                   skip_initial_step = False)):
            temp_drchlt[i]=domain_drchlt.quantities['stage'].centroid_values[2]
            #domain_drchlt.write_time()
        
        #print domain_fbound.quantities['stage'].vertex_values
        #print domain_drchlt.quantities['stage'].vertex_values
                    
        assert num.allclose(temp_fbound,temp_drchlt),temp_fbound-temp_drchlt

        
        assert num.allclose(domain_fbound.quantities['stage'].vertex_values,
                            domain_drchlt.quantities['stage'].vertex_values)
                        
        assert num.allclose(domain_fbound.quantities['xmomentum'].vertex_values,
                            domain_drchlt.quantities['xmomentum'].vertex_values)                        
                        
        assert num.allclose(domain_fbound.quantities['ymomentum'].vertex_values,
                            domain_drchlt.quantities['ymomentum'].vertex_values)
        
        if not sys.platform == 'win32':
            if myid==0: os.remove(sts_file+'.sts')
        
        if myid==0: os.remove(meshname)
    def parallel_time_varying_file_boundary_sts(self):
        """ parallel_test_time_varying_file_boundary_sts_sequential(self):
            Read correct points from ordering file and apply sts to boundary. 
            The boundary is time varying. Compares sequential result with 
            distributed result found using anuga_parallel
        """

        #------------------------------------------------------------
        # Define test variables
        #------------------------------------------------------------
        lat_long_points=[[6.01,97.0],[6.02,97.0],[6.05,96.9],[6.0,97.0]]
        bounding_polygon=[[6.0,97.0],[6.01,97.0],[6.02,97.0],
                          [6.02,97.02],[6.00,97.02]]
        tide = 3.0
        time_step_count = 65
        time_step = 2
        n=len(lat_long_points)
        first_tstep=num.ones(n,num.int)
        last_tstep=(time_step_count)*num.ones(n,num.int)
        finaltime=num.float(time_step*(time_step_count-1))
        yieldstep=num.float(time_step)
        gauge_depth=20*num.ones(n,num.float)
        ha=2*num.ones((n,time_step_count),num.float)
        ua=10*num.ones((n,time_step_count),num.float)
        va=-10*num.ones((n,time_step_count),num.float)

        times=num.arange(0, time_step_count*time_step, time_step)
        for i in range(n):
            #ha[i]+=num.sin(times)
            ha[i]+=times/finaltime

        #------------------------------------------------------------
        # Write mux data to file then convert to sts format
        #------------------------------------------------------------
        sts_file="test"
        if myid==0:
            base_name, files = self.write_mux2(lat_long_points,
                                               time_step_count,
                                               time_step,
                                               first_tstep,
                                               last_tstep,
                                               depth=gauge_depth,
                                               ha=ha,
                                               ua=ua,
                                               va=va)
            # base name will not exist, but 3 other files are created

            # Write order file
            file_handle, order_base_name = tempfile.mkstemp("")
            os.close(file_handle)
            os.remove(order_base_name)
            d=","
            order_file=order_base_name+'order.txt'
            fid=open(order_file,'w')
        
            # Write Header
            header='index, longitude, latitude\n'
            fid.write(header)
            indices=[3,0,1]
            for i in indices:
                line=str(i)+d+str(lat_long_points[i][1])+d+\
                    str(lat_long_points[i][0])+"\n"
                fid.write(line)
            fid.close()

            urs2sts(base_name,
                    basename_out=sts_file,
                    ordering_filename=order_file,
                    mean_stage=tide,
                    verbose=verbose)
            self.delete_mux(files)

            assert(os.access(sts_file+'.sts', os.F_OK))

            os.remove(order_file)

        barrier()
        #------------------------------------------------------------
        # Define boundary_polygon on each processor. This polygon defines the
        # urs boundary and lies on a portion of the bounding_polygon
        #------------------------------------------------------------
        boundary_polygon = create_sts_boundary(sts_file)

        # Append the remaining part of the boundary polygon to be defined by
        # the user
        bounding_polygon_utm=[]
        for point in bounding_polygon:
            zone,easting,northing=redfearn(point[0],point[1])
            bounding_polygon_utm.append([easting,northing])

        boundary_polygon.append(bounding_polygon_utm[3])
        boundary_polygon.append(bounding_polygon_utm[4])


        assert num.allclose(bounding_polygon_utm,boundary_polygon)

        extent_res=10000
        meshname = 'urs_test_mesh' + '.tsh'
        interior_regions=None
        boundary_tags={'ocean': [0,1], 'otherocean': [2,3,4]}
        
        #------------------------------------------------------------
        # Create mesh on the master processor and store in file. This file
        # is read in by each slave processor when needed
        #------------------------------------------------------------
        if myid==0:
            create_mesh_from_regions(boundary_polygon,
                                     boundary_tags=boundary_tags,
                                     maximum_triangle_area=extent_res,
                                     filename=meshname,
                                     interior_regions=interior_regions,
                                     verbose=verbose)
        

            # barrier()
            domain_fbound = Domain(meshname)
            domain_fbound.set_quantities_to_be_stored(None)
            domain_fbound.set_quantity('stage', tide)
            # print domain_fbound.mesh.get_boundary_polygon()
        else:
            domain_fbound=None

        barrier()
        if ( verbose and myid == 0 ): 
            print 'DISTRIBUTING PARALLEL DOMAIN'
        domain_fbound = distribute(domain_fbound)

        #--------------------------------------------------------------------
        # Find which sub_domain in which the interpolation points are located 
        #
        # Sometimes the interpolation points sit exactly
        # between two centroids, so in the parallel run we
        # reset the interpolation points to the centroids
        # found in the sequential run
        #--------------------------------------------------------------------
        interpolation_points = [[279000,664000], [280250,664130], 
                                    [279280,665400], [280500,665000]]

        interpolation_points=num.array(interpolation_points)

        #if myid==0:
        #    import pylab as P
        #    boundary_polygon=num.array(boundary_polygon)
        #    P.plot(boundary_polygon[:,0],boundary_polygon[:,1])
        #    P.plot(interpolation_points[:,0],interpolation_points[:,1],'ko')
        #    P.show()

        fbound_gauge_values = []
        fbound_proc_tri_ids = []
        for i, point in enumerate(interpolation_points):
            fbound_gauge_values.append([]) # Empty list for timeseries

            try:
                k = domain_fbound.get_triangle_containing_point(point)
                if domain_fbound.tri_full_flag[k] == 1:
                    fbound_proc_tri_ids.append(k)
                else:
                    fbound_proc_tri_ids.append(-1)            
            except:
                fbound_proc_tri_ids.append(-2)


        if verbose: print 'P%d has points = %s' %(myid, fbound_proc_tri_ids)

        #------------------------------------------------------------
        # Set boundary conditions
        #------------------------------------------------------------
        Bf = File_boundary(sts_file+'.sts',
                           domain_fbound,
                           boundary_polygon=boundary_polygon)
        Br = Reflective_boundary(domain_fbound)
    
        domain_fbound.set_boundary({'ocean': Bf,'otherocean': Br})

        #------------------------------------------------------------
        # Evolve the domain on each processor
        #------------------------------------------------------------  
        for i, t in enumerate(domain_fbound.evolve(yieldstep=yieldstep,
                                                   finaltime=finaltime, 
                                                   skip_initial_step = False)):

            stage = domain_fbound.get_quantity('stage')
            for i in range(4):
                if fbound_proc_tri_ids[i] > -1:
                    fbound_gauge_values[i].append(stage.centroid_values[fbound_proc_tri_ids[i]])
        
        #------------------------------------------------------------
        # Create domain to be run sequntially on each processor
        #------------------------------------------------------------
        domain_drchlt = Domain(meshname)
        domain_drchlt.set_quantities_to_be_stored(None)
        domain_drchlt.set_starttime(time_step)
        domain_drchlt.set_quantity('stage', tide)
        Br = Reflective_boundary(domain_drchlt)
        #Bd = Dirichlet_boundary([2.0+tide,220+10*tide,-220-10*tide])
        Bd = Time_boundary(domain=domain_drchlt, function=lambda t: [2.0+t/finaltime+tide,220.+10.*tide+10.*t/finaltime,-220.-10.*tide-10.*t/finaltime])
        #Bd = Time_boundary(domain=domain_drchlt,function=lambda t: [2.0+num.sin(t)+tide,10.*(2+20.+num.sin(t)+tide),-10.*(2+20.+num.sin(t)+tide)])
        domain_drchlt.set_boundary({'ocean': Bd,'otherocean': Br})
       
        drchlt_gauge_values = []
        drchlt_proc_tri_ids = []
        for i, point in enumerate(interpolation_points):
            drchlt_gauge_values.append([]) # Empty list for timeseries

            try:
                k = domain_drchlt.get_triangle_containing_point(point)
                if domain_drchlt.tri_full_flag[k] == 1:
                    drchlt_proc_tri_ids.append(k)
                else:
                    drchlt_proc_tri_ids.append(-1)            
            except:
                drchlt_proc_tri_ids.append(-2)


        if verbose: print 'P%d has points = %s' %(myid, drchlt_proc_tri_ids)

        #------------------------------------------------------------
        # Evolve entire domain on each processor
        #------------------------------------------------------------
        for i, t in enumerate(domain_drchlt.evolve(yieldstep=yieldstep,
                                                   finaltime=finaltime, 
                                                   skip_initial_step = False)):

            stage = domain_drchlt.get_quantity('stage')
            for i in range(4):
                drchlt_gauge_values[i].append(stage.centroid_values[drchlt_proc_tri_ids[i]])

        #------------------------------------------------------------
        # Compare sequential values with parallel values
        #------------------------------------------------------------
        barrier()
        success = True
        for i in range(4):
            if fbound_proc_tri_ids[i] > -1:
                fbound_gauge_values[i]=num.array(fbound_gauge_values[i])
                drchlt_gauge_values[i]=num.array(drchlt_gauge_values[i])
                #print i,fbound_gauge_values[i][4]
                #print i,drchlt_gauge_values[i][4]
                success = success and num.allclose(fbound_gauge_values[i], drchlt_gauge_values[i])
                assert success#, (fbound_gauge_values[i]-drchlt_gauge_values[i])

        #assert_(success)       

        if not sys.platform == 'win32':
            if myid==0: os.remove(sts_file+'.sts')
        
        if myid==0: os.remove(meshname)