def interp(self):
#point = (self.dst_grid_center_lon[0], self.dst_grid_center_lat[0])
#point = (0.0, 0.0)
n = len(self.dst_grid_center_lon)
for i in xrange(n):
# ignore masked pnt
if self.dst_grid_imask[i] == 0:
print 'My mask is zero!'
self.remap_matrix.append([])
self.remap_matrix_indx.append([])
continue
# debug recovery function
#dst_point = (357.625, -82.375)
dst_point = (self.dst_grid_center_lon[i], self.dst_grid_center_lat[i])
indx, lst = self.bilinearbox_obj.find_nearest_k(dst_point, 4)
# suppose atom grid has no mask
# case ocn2atm, a atm cell with a land cell below
if Interp.check_all_masks(self, indx, 4):
print 'It must be a land cell.'
self.remap_matrix.append([])
self.remap_matrix_indx.append([])
continue
# decide if dst pnt is coincide with a src pnt
local_wgt = []
if dst_point in lst:
print 'coincide'
for item in lst:
if item == dst_point:
local_wgt.append(1.0)
else:
local_wgt.append(0.0)
Interp.check_wgt(self, local_wgt)
Interp.check_wgtsum(self, local_wgt)
# set remap_matrix and remap_matrix_indx objs
self.remap_matrix.append(local_wgt)
indx = Interp.indx_recovery(self, indx)
self.remap_matrix_indx.append(indx)
continue
# better wish, but disappointed
# tackle pole region
if self.pole_flag:
if dst_point[1] > self.pole_north_bnd:
print 'Tackling pole region'
bilinear_solver = Pole_Solver(dst_point, self.pole_north, 4)
bilinear_solver.solve()
bilinear_box_indx = self.pole_north_indx[0:4]
bilinear_box_indx = Interp.indx_recovery(self, bilinear_box_indx)
self.remap_matrix.append(bilinear_solver.wgt_lst)
self.remap_matrix_indx.append(bilinear_box_indx)
continue
if dst_point[1] < self.pole_south_bnd:
print 'Tackling pole region'
bilinear_solver = Pole_Solver(dst_point, self.pole_south, 4)
bilinear_solver.solve()
bilinear_box_indx = self.pole_south_indx[0:4]
bilinear_box_indx = Interp.indx_recovery(self, bilinear_box_indx)
self.remap_matrix.append(bilinear_solver.wgt_lst)
self.remap_matrix_indx.append(bilinear_box_indx)
continue
# find a bilinear box
outside_flag, full_flag, bilinear_box_indx, bilinear_box = self.bilinearbox_obj.find_nearest_box(dst_point)
# can not find 4 cells with no masks
# use idw algorithm instead
if not full_flag:
bilinear_solver = Idw_Solver(dst_point, bilinear_box, 1.0e-6, 1)
bilinear_solver.solve()
bilinear_box_indx = Interp.indx_recovery(self, bilinear_box_indx)
Interp.check_wgt(self, bilinear_solver.wgt_lst)
Interp.check_wgtsum(self, bilinear_solver.wgt_lst)
self.remap_matrix.append(bilinear_solver.wgt_lst)
self.remap_matrix_indx.append(bilinear_box_indx)
continue
predict_flag = False
# if can not be contained or bounding rect is a triangle
# deciding a triangle by checking if three of them is collinearion
if outside_flag or self.check_triangle(bilinear_box):
predict_flag = True
print 'predictor case.'
bilinear_solver = Bilinear_Predictor(dst_point, bilinear_box)
bilinear_solver.predict()
# print debug info in detail
if outside_flag:
print 'outside'
if not is_convex_quadrangle(bilinear_box):
print 'it is a non-convex quadrangle, so it must be outside.'
else:
print 'trully meaning extrapolation.'
else:
print 'it is a bounding triangle box.'
else:
print dst_point
print bilinear_box
print 'normal case'
bilinear_solver = Bilinear_Solver(dst_point, bilinear_box)
branch = self.switch(bilinear_box)
if branch == 1:
bilinear_solver.solve_bilinear_case1()
if branch == 2:
bilinear_solver.solve_bilinear_case2()
if branch == 3:
bilinear_solver.solve_bilinear_case3()
# transferm ghost bilinear_box_indx to original
bilinear_box_indx = Interp.indx_recovery(self, bilinear_box_indx)
print dst_point
print bilinear_box
print bilinear_box_indx
print bilinear_solver.wgt_lst
print ''
# store result into objs
#self.interp_wgt = bilinear_solver.wgt_lst
#self.interp_box_indx = bilinear_box_indx
#self.interp_box = bilinear_box
if not predict_flag:
Interp.check_wgt(self, bilinear_solver.wgt_lst)
Interp.check_wgtsum(self, bilinear_solver.wgt_lst)
# set remap_matrix and remap_matrix_indx objs
self.remap_matrix.append(bilinear_solver.wgt_lst)
self.remap_matrix_indx.append(bilinear_box_indx)
print 'remap_matrix size is:'
print len(self.remap_matrix)
def interp(self):
n = len(self.dst_grid_center_lon)
# traverse dst pnt
for i in xrange(n):
# ignore masked pnt
if self.dst_grid_imask[i] == 0:
print 'My mask is zero!'
self.remap_matrix.append([])
self.remap_matrix_indx.append([])
continue
dst_point = (self.dst_grid_center_lon[i], self.dst_grid_center_lat[i])
neighbor_indx, neighbor_lst = self.find_idw_neighbors(dst_point)
# suppose atm grid has no mask
# case ocn2atm, a atm cell with a land cell below
if not neighbor_indx:
print 'It must be a land cell.'
self.remap_matrix.append([])
self.remap_matrix_indx.append([])
continue
# better wish, but disappointed
# tackle pole region
if self.pole_flag:
if dst_point[1] > self.pole_north_bnd:
print 'Tackling pole region'
idw_solver = Pole_Solver(dst_point, self.pole_north, self.nearest_k)
idw_solver.solve()
idw_box_indx = self.pole_north_indx[0:self.nearest_k]
idw_box_indx = Interp.indx_recovery(self, idw_box_indx)
self.remap_matrix.append(idw_solver.wgt_lst)
self.remap_matrix_indx.append(idw_box_indx)
continue
if dst_point[1] < self.pole_south_bnd:
print 'Tackling pole region'
idw_solver = Pole_Solver(dst_point, self.pole_south, self.nearest_k)
idw_solver.solve()
idw_box_indx = self.pole_south_indx[0:self.nearest_k]
idw_box_indx = Interp.indx_recovery(self, idw_box_indx)
self.remap_matrix.append(idw_solver.wgt_lst)
self.remap_matrix_indx.append(idw_box_indx)
continue
# normal case, init idw_solver
idw_solver = Idw_Solver(dst_point, neighbor_lst, self.eps, self.power)
# decide if dst pnt is coincide with a src pnt
if dst_point in neighbor_lst:
print 'coincide'
for item in neighbor_lst:
if item == dst_point:
idw_solver.wgt_lst.append(1.0)
else:
idw_solver.wgt_lst.append(0.0)
else:
# solve normal case
idw_solver.solve()
print neighbor_indx
# transform ghost indx to original
neighbor_indx = Interp.indx_recovery(self, neighbor_indx)
print neighbor_indx
print ''
print dst_point
print neighbor_lst
print neighbor_indx
print idw_solver.wgt_lst
# store result into objs
#self.interp_wgt = idw_solver.wgt_lst
#self.interp_box_indx = neighbor_indx
#self.interp_box = neighbor_lst
# set remap_matrix and remap_matrix_indx objs
self.remap_matrix.append(idw_solver.wgt_lst)
self.remap_matrix_indx.append(neighbor_indx)
if len(idw_solver.wgt_lst) != len(neighbor_indx):
print idw_solver.wgt_lst
print neighbor_indx
print 'ERRORRRR'
sys.exit()
print 'remap_matrix size is:'
print len(self.remap_matrix)