Posteriormente a buscar en varios repositorios y páginas webs al final nos encontramos con la respuesta que te enseñaremos a continuación.
Solución:
Si puedes trabajar con arcpy en Python un poco, entonces podría usar algún script para generar estas zonas en una dirección específica. Hice algunos similares hace unas semanas, publicaré parte de mi guión para ayudarte.
import arcpy, math, gc
# Workspace, overwrite
arcpy.env.workspace = r"YOUR_WORKSPACE"
arcpy.env.overwriteOutput = True
# INPUTS
objects_input = "objects.shp" # must be polygons
objects = "objects_lyr.shp"
arcpy.MakeFeatureLayer_management(objects_input, objects)
# OUTPUTS, most temporal
result = "result.shp"
result_erase = "in_memory" + "\" + "result_erase"
polygon = "in_memory" + "\" + "polygon"
polygon_dissolve = "in_memory" + "\" + "polygon_dissolve"
arcpy.CreateFeatureclass_management(arcpy.env.workspace, result, "POLYGON")
# Parameters
distance = 300 # distance for move in direction
direction = 90 # direction in degrees (90 is from north to south)
index = 0
# Set UpdateCursor
cur_objects = arcpy.da.UpdateCursor(objects, ("FID"))
for row_objects in cur_objects:
try:
fid = row_objects[0]
sql = '"FID" = ' + str(index)
index += 1
# Initialize lists
lines_list = []
lines_created = []
# Select current feature
arcpy.SelectLayerByAttribute_management(objects, "NEW_SELECTION", sql)
vertexes = "in_memory" + "\" + "vertexes"
# Convert object to vertexes
arcpy.FeatureVerticesToPoints_management(objects, vertexes, "ALL")
index_vertex = 0
# Set SearchCursor for vertexes
cur_vertexes = arcpy.da.SearchCursor(vertexes, ("[email protected]"))
for row_vertexes in cur_vertexes:
vertex_coords_x = row_vertexes[0][0]
vertex_coords_y = row_vertexes[0][1]
# Define points coordinates
point_move_x = vertex_coords_x - (distance) * math.cos(math.radians(direction))
point_move_y = vertex_coords_y - (distance) * math.cos(math.radians(90 - direction))
# Make list of points
new_line = ([[vertex_coords_x, vertex_coords_y], [point_move_x, point_move_y]])
lines_list.append(new_line)
# From second cycle
if index_vertex > 0:
lines_vertexes = ([[vertex_coords_x, vertex_coords_y], start_line])
lines_ends = ([[point_move_x, point_move_y], end_line])
lines_list.append(lines_vertexes)
lines_list.append(lines_ends)
start_line = [vertex_coords_x, vertex_coords_y]
end_line = [point_move_x, point_move_y]
index_vertex = index_vertex + 1
# Cycle that makes polylines from points
for lines_step in lines_list:
lines_created.append(arcpy.Polyline(arcpy.Array([arcpy.Point(*sour) for sour in lines_step])))
arcpy.FeatureToPolygon_management(lines_created, polygon)
arcpy.AggregatePolygons_cartography(polygon, polygon_dissolve, 1)
# Final editing
arcpy.Erase_analysis(polygon_dissolve, objects, result_erase)
arcpy.Append_management(result_erase, result, "NO_TEST")
arcpy.Delete_management("in_memory")
arcpy.Delete_management(vertexes)
start_line = []
# Clear selection, memory and deleting temps
arcpy.SelectLayerByAttribute_management(objects, "CLEAR_SELECTION")
print "Object number: " + str(index - 1) + " -- done."
gc.collect()
# Catch errors
except Exception as e:
pass
print "Error:"
print e
print "n"
index += 1
Espero que lo puedan leer bien, tuve que traducir comentarios y variables.
Este es el guión que resuelve el problema. Crédito y muchas gracias a david_p que lo escribió. Solo agregué algunos paréntesis faltantes.
import arcpy, math, gc
# Workspace, overwrite
arcpy.env.workspace = r"YOUR_WORKSPACE"
arcpy.env.overwriteOutput = True
# INPUTS
objects_input = "objects.shp" # must be polygons
objects = "objects_lyr.shp"
arcpy.MakeFeatureLayer_management(objects_input, objects)
# OUTPUTS, most temporal
result = "result.shp"
result_erase = "in_memory" + "\" + "result_erase"
polygon = "in_memory" + "\" + "polygon"
polygon_dissolve = "in_memory" + "\" + "polygon_dissolve"
arcpy.CreateFeatureclass_management(arcpy.env.workspace, result, "POLYGON")
# Parameters
distance = 300 # distance for move in direction
direction = 90 # direction in degrees (90 is from north to south)
index = 0
# Set UpdateCursor
cur_objects = arcpy.da.UpdateCursor(objects, ("FID"))
for row_objects in cur_objects:
try:
fid = row_objects[0]
sql = '"FID" = ' + str(index)
index += 1
# Initialize lists
lines_list = []
lines_created = []
# Select current feature
arcpy.SelectLayerByAttribute_management(objects, "NEW_SELECTION", sql)
vertexes = "in_memory" + "\" + "vertexes"
# Convert object to vertexes
arcpy.FeatureVerticesToPoints_management(objects, vertexes, "ALL")
index_vertex = 0
# Set SearchCursor for vertexes
cur_vertexes = arcpy.da.SearchCursor(vertexes, ("[email protected]"))
for row_vertexes in cur_vertexes:
vertex_coords_x = row_vertexes[0][0]
vertex_coords_y = row_vertexes[0][1]
# Define points coordinates
point_move_x = vertex_coords_x - (distance) * math.cos(math.radians(direction))
point_move_y = vertex_coords_y - (distance) * math.cos(math.radians(90 - direction))
# Make list of points
new_line = ([[vertex_coords_x, vertex_coords_y], [point_move_x, point_move_y]])
lines_list.append(new_line)
# From second cycle
if index_vertex > 0:
lines_vertexes = ([[vertex_coords_x, vertex_coords_y], start_line])
lines_ends = ([[point_move_x, point_move_y], end_line])
lines_list.append(lines_vertexes)
lines_list.append(lines_ends)
start_line = [vertex_coords_x, vertex_coords_y]
end_line = [point_move_x, point_move_y]
index_vertex = index_vertex + 1
# Cycle that makes polylines from points
for lines_step in lines_list:
lines_created.append(arcpy.Polyline(arcpy.Array([arcpy.Point(*sour) for sour in lines_step])))
arcpy.FeatureToPolygon_management(lines_created, polygon)
arcpy.AggregatePolygons_cartography(polygon, polygon_dissolve, 1)
# Final editing
arcpy.Erase_analysis(polygon_dissolve, objects, result_erase)
arcpy.Append_management(result_erase, result, "NO_TEST")
arcpy.Delete_management("in_memory")
arcpy.Delete_management(vertexes)
start_line = []
# Clear selection, memory and deleting temps
arcpy.SelectLayerByAttribute_management(objects, "CLEAR_SELECTION")
print ("Object number: " + str(index - 1) + " -- done.")
gc.collect()
# Catch errors
except Exception as e:
pass
print ("Error:")
print (e)
print ("n")
index += 1
Si tienes algún titubeo o capacidad de arreglar nuestro sección puedes dejar un exégesis y con mucho placer lo observaremos.
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