def advanced_module(self, g_habitat, out, source_map, ground_map, source_id=None, component_with_points=None):
solver_called = False
solver_failed = False
node_map = None
if component_with_points != None:
G = g_habitat.get_graph()
G = ComputeBase.laplacian(G)
node_map = g_habitat.node_map
vc_map_id = '' if source_id==None else str(source_id)
out.alloc_v_map(vc_map_id)
if self.options.write_cur_maps:
out.alloc_c_map(vc_map_id)
for comp in range(1, g_habitat.num_components+1):
if (component_with_points != None) and (comp != component_with_points):
continue
if self.options.data_type == 'raster':
c_map = np.where(g_habitat.component_map == comp, 1, 0)
local_source_map = np.multiply(c_map, source_map)
local_ground_map = np.where(c_map, ground_map, 0)
del c_map
have_sources = (np.where(local_source_map, 1, 0)).sum() > 0
have_grounds = (np.where(local_ground_map, 1, 0)).sum() > 0
else:
c_map = np.where(g_habitat.components == comp, 1, 0)
sources = np.zeros(g_habitat.num_nodes)
for idx in range(0, source_map.shape[0]):
sources = np.where(g_habitat.node_map == source_map[idx,0], source_map[idx,1], sources)
grounds = -9999 * np.ones(g_habitat.num_nodes)
for idx in range(0, ground_map.shape[0]):
grounds = np.where(g_habitat.node_map == ground_map[idx,0], ground_map[idx,1], grounds)
if self.options.ground_file_is_resistances:
_grounds = 1 / grounds
grounds = np.where(grounds == -9999, 0, _grounds)
else:
grounds = np.where(grounds == -9999, 0, grounds)
have_sources = (np.where(sources, 1, 0)).sum() > 0
have_grounds = (np.where(grounds, 1, 0)).sum() > 0
if not (have_sources and have_grounds):
continue
if component_with_points == None:
(G, node_map) = g_habitat.prune_nodes_for_component(comp)
G = ComputeBase.laplacian(G)
if self.options.data_type == 'raster':
(rows, cols) = np.where(local_source_map)
values = local_source_map[rows,cols]
local_sources_rc = np.c_[values,rows,cols]
(rows, cols) = np.where(local_ground_map)
values = local_ground_map[rows,cols]
local_grounds_rc = np.c_[values,rows,cols]
del rows, cols, values, local_source_map, local_ground_map
numnodes = node_map.max()
sources = np.zeros(numnodes)
grounds = np.zeros(numnodes)
num_local_sources = local_sources_rc.shape[0]
num_local_grounds = local_grounds_rc.shape[0]
for source in range(0, num_local_sources):
src = self.grid_to_graph(local_sources_rc[source,1], local_sources_rc[source,2], node_map)
# Possible to have more than one source at a node when there are polygons
sources[src] += local_sources_rc[source,0]
for ground in range(0, num_local_grounds):
gnd = self.grid_to_graph (local_grounds_rc[ground,1], local_grounds_rc[ground,2], node_map)
# Possible to have more than one ground at a node when there are polygons
grounds[gnd] += local_grounds_rc[ground,0]
(sources, grounds, finitegrounds) = self.resolve_conflicts(sources, grounds)
solver_called = True
try:
voltages = self.multiple_solver(G, sources, grounds, finitegrounds)
del sources, grounds
except MemoryError:
raise MemoryError
except:
voltages = -777
solver_failed = True
if solver_failed==False:
##Voltage and current mapping are cumulative, since there may be independent components.
if self.options.write_volt_maps or (self.options.scenario=='one-to-all'):
out.accumulate_v_map(vc_map_id, voltages, node_map)
if self.options.write_cur_maps:
out.accumulate_c_map(vc_map_id, voltages, G, node_map, finitegrounds, None, None)
if solver_failed==False and self.options.write_volt_maps:
out.write_v_map(vc_map_id)
if (self.options.write_cur_maps) and ((source_id == None) or ((source_id != None) and (self.options.write_cum_cur_map_only==False))):
out.write_c_map(vc_map_id, node_map=node_map)
if self.options.scenario=='one-to-all':
if solver_failed==False:
(row, col) = np.where(source_map>0)
vmap = out.get_v_map(vc_map_id)
voltages = vmap[row,col]/source_map[row,col] #allows for variable source strength
elif self.options.scenario=='all-to-one':
if solver_failed==False:
voltages = 0 #return 0 voltage/resistance for all-to-one mode
out.rm_v_map(vc_map_id)
# Advanced mode will return voltages of the last component solved only for verification purposes.
if solver_called==False:
voltages = -1
return voltages, out.get_c_map(vc_map_id, True), solver_failed
def single_ground_all_pair_resistances(self, g_habitat, fp, cs, report_status):
"""Handles pairwise resistance/current/voltage calculations.
Called once when focal points are used, called multiple times when focal regions are used.
"""
options = self.options
last_write_time = time.time()
numpoints = fp.num_points()
parallelize = options.parallelize
# TODO: revisit to see if restriction can be removed
if options.low_memory_mode==True or self.state.point_file_contains_polygons==True:
parallelize = False
if (self.state.point_file_contains_polygons == True) or (options.write_cur_maps == True) or (options.write_volt_maps == True) or (options.use_included_pairs==True) or (options.data_type=='network'):
use_resistance_calc_shortcut = False
else:
use_resistance_calc_shortcut = True # We use this when there are no focal regions. It saves time when we are also not creating maps
shortcut_resistances = -1 * np.ones((numpoints, numpoints), dtype='float64')
solver_failed_somewhere = [False]
Compute.logger.info('Graph has ' + str(g_habitat.num_nodes) + ' nodes, ' + str(numpoints) + ' focal nodes and '+ str(g_habitat.num_components)+ ' components.')
resistances = -1 * np.ones((numpoints, numpoints), dtype = 'float64') #Inf creates trouble in python 2.5 on Windows. Use -1 instead.
# if use_resistance_calc_shortcut==True:
# num_points_to_solve = numpoints
# else:
# num_points_to_solve = numpoints*(numpoints-1)/2
num_points_to_solve = 0
max_parallel = 0
for c in range(1, int(g_habitat.num_components+1)):
if not fp.exists_points_in_component(c, g_habitat):
continue
num_parallel = 0
for (pt1_idx, pt2_idx) in fp.point_pair_idxs_in_component(c, g_habitat):
if pt2_idx == -1:
if (use_resistance_calc_shortcut==True):
max_parallel = max(max_parallel, num_parallel)
num_parallel = 0
break
else:
max_parallel = max(max_parallel, num_parallel)
num_parallel = 0
continue
num_parallel += 1
num_points_to_solve += 1
Compute.logger.debug('max parallel possible = ' + str(max_parallel) + ', will parallelize = ' + str(parallelize))
num_points_solved = 0
for c in range(1, int(g_habitat.num_components+1)):
if not fp.exists_points_in_component(c, g_habitat):
continue
G_pruned, local_node_map = g_habitat.prune_nodes_for_component(c)
G = ComputeBase.laplacian(G_pruned)
del G_pruned
if use_resistance_calc_shortcut:
voltmatrix = np.zeros((numpoints,numpoints), dtype='float64') #For resistance calc shortcut
G_dst_dst = local_dst = None
for (pt1_idx, pt2_idx) in fp.point_pair_idxs_in_component(c, g_habitat):
if pt2_idx == -1:
if parallelize:
self.state.worker_pool_wait()
self.state.del_amg_hierarchy()
if (local_dst != None) and (G_dst_dst != None):
G[local_dst, local_dst] = G_dst_dst
local_dst = G_dst_dst = None
if (use_resistance_calc_shortcut==True):
Compute.get_shortcut_resistances(pt1_idx, voltmatrix, numpoints, resistances, shortcut_resistances)
break #No need to continue, we've got what we need to calculate resistances
else:
continue
if parallelize:
self.state.worker_pool_create(options.max_parallel, True)
if report_status==True:
num_points_solved += 1
if use_resistance_calc_shortcut==True:
Compute.logger.info('solving focal node ' + str(num_points_solved) + ' of '+ str(num_points_to_solve))
else:
Compute.logger.info('solving focal pair ' + str(num_points_solved) + ' of '+ str(num_points_to_solve))
local_src = fp.get_graph_node_idx(pt2_idx, local_node_map)
if None == local_dst:
local_dst = fp.get_graph_node_idx(pt1_idx, local_node_map)
G_dst_dst = G[local_dst, local_dst]
G[local_dst, local_dst] = 0
if self.state.amg_hierarchy == None:
self.state.create_amg_hierarchy(G, self.options.solver)
if use_resistance_calc_shortcut:
post_solve = self._post_single_ground_solve(G, fp, cs, resistances, numpoints, pt1_idx, pt2_idx, local_src, local_dst, local_node_map, solver_failed_somewhere, use_resistance_calc_shortcut, voltmatrix)
else:
post_solve = self._post_single_ground_solve(G, fp, cs, resistances, numpoints, pt1_idx, pt2_idx, local_src, local_dst, local_node_map, solver_failed_somewhere)
if parallelize:
self.state.worker_pool.apply_async(Compute.parallel_single_ground_solver, args=(G, local_src, local_dst, options.solver, self.state.amg_hierarchy), callback=post_solve)
#post_solve(self.state.worker_pool.apply(Compute.parallel_single_ground_solver, args=(G, local_src, local_dst, options.solver, self.state.amg_hierarchy)))
else:
try:
voltages = Compute.single_ground_solver(G, local_src, local_dst, options.solver, self.state.amg_hierarchy)
except:
voltages = None
post_solve(voltages)
if options.low_memory_mode==True or self.state.point_file_contains_polygons==True:
self.state.del_amg_hierarchy()
(hours,mins,_secs) = ComputeBase.elapsed_time(last_write_time)
if mins > 2 or hours > 0:
last_write_time = time.time()
CSIO.write_resistances(options.output_file, resistances, incomplete=True)# Save incomplete resistances
self.state.del_amg_hierarchy()
# Finally, resistance to self is 0.
if use_resistance_calc_shortcut==True:
resistances = shortcut_resistances
for i in range(0, numpoints):
resistances[i, i] = 0
return resistances, solver_failed_somewhere[0]