def _array_to_poly_(arr, SR=None, as_type="Polygon"):
"""Convert array-like objects to arcpy geometry.
This can include an `ndarray`, an `object array` or a `list of lists`
which represent polygon or polyline geometry.
Parameters
----------
arr : list-like
A list of arrays representing the poly parts, or an object array.
SR : spatial reference
Leave as None if not known. Enclose in quotes. eg. "4326"
as_type : text
Polygon or Polyline.
Notes
-----
Polygon geometries require a duplicate first and last point.
Outer rings are ordered clockwise with inner rings (holes)
counterclockwise.
No check are made to the integrety of the geometry in this function.
"""
subs = np.asarray(arr, dtype='O')
aa = []
for sub in subs:
aa.append([Point(*pairs) for pairs in sub])
if as_type.upper() == 'POLYGON':
poly = Polygon(Array(aa), SR)
elif as_type.upper() == 'POLYLINE':
poly = Polyline(Array(aa), SR)
return poly
def calc_linha_ret(li_pla1, li_pla2, distancia, proj_geo, proj_plana):
array = Array()
ponto1 = li_pla1.positionAlongLine(distancia).projectAs(proj_geo)
ponto2 = li_pla2.positionAlongLine(distancia).projectAs(proj_geo)
pt_label1 = ponto1.labelPoint
pt_label2 = ponto2.labelPoint
array.add(pt_label1)
array.add(pt_label2)
linha_ret = Polyline(array, proj_geo)
del array
return linha_ret
def calc_linhas_largura(dict_circ_desc, ponto):
"""criar linhas de largura"""
if dict_circ_desc["tipo_circulo"] == "meio":
linha_nao_intersecta_ponto = None
point_circ = Point()
point_circ.X = dict_circ_desc["pt_medios_circ"]["x_ptm"]
point_circ.Y = dict_circ_desc["pt_medios_circ"]["y_ptm"]
array = Array([point_circ, ponto.getPart(0)])
linha_circulo = Polyline(array, projecao_geo)
for parte_linha in dict_circ_desc["partes"]:
if not dict_circ_desc["partes"][parte_linha]["cruza_ponto"]:
linha_nao_intersecta_ponto = dict_circ_desc["partes"][parte_linha]["linha_geometria"]
if linha_circulo.disjoint(linha_nao_intersecta_ponto):
array.removeAll()
point_circ = Point()
point_circ.X = dict_circ_desc["pt_medios_circ"]["x_ptm_inv"]
point_circ.Y = dict_circ_desc["pt_medios_circ"]["y_ptm_inv"]
array = Array([point_circ, ponto.getPart(0)])
linha_circulo = Polyline(array, projecao_geo)
linha_largura = linha_circulo.intersect(poligono_ma, 2)
array.removeAll()
else:
linha_largura = linha_circulo.intersect(poligono_ma, 2)
array.removeAll()
return linha_largura, linha_circulo
def rotacionar_poligono(polygon, anchor_point, ang, proj_geo):
array = Array()
anchor_x = anchor_point.X
anchor_y = anchor_point.Y
for part in polygon:
for point in part:
x = point.X - anchor_x
y = point.Y - anchor_y
resultx = (x * math.cos(ang)) - (y * math.sin(ang)) + anchor_x
resulty = (x * math.sin(ang)) + (y * math.cos(ang)) + anchor_y
array.add(Point(resultx, resulty))
result_polygon = Polygon(array, proj_geo)
del array
return result_polygon
def arr2poly(a, SR):
"""Construct the poly feature from lists or arrays.
The inputs may be nested and mixed in content.
"""
aa = []
for pairs in a:
sub = pairs[0]
oid = pairs[1]
aa.append([Point(*pairs) for pairs in sub])
if p_type.upper() == 'POLYGON':
poly = Polygon(Array(aa), SR)
elif p_type.upper() == 'POLYLINE':
poly = Polyline(Array(aa), SR)
return (poly, oid)
def fc_union(in_fc, poly_type="polygon"):
"""Union features in a featureclass.
The output shape is built from its individual parts.
Shared boundaries will be dissolved.
Parameters
----------
in_fc : featureclass
poly_type : text
Either `polygon` or `polyline`
fc = "C:/Git_Dan/npgeom/Project_npg/tests.gdb/sq"
"""
arr = []
SR = get_SR(in_fc, verbose=False)
with SearchCursor(in_fc, ['SHAPE@']) as cursor:
for row in cursor:
poly = row[0]
for cnt in range(poly.partCount):
part = poly.getPart(cnt)
arr.append(part)
a = Array(arr)
if poly_type == "polygon":
return Polygon(a, SR)
elif poly_type == "polyline":
return Polyline(a, SR)
else:
print("Not polygon or polyline")
return None
def _arr_poly_(arr, SR, as_type):
"""Slice the array where nan values appear, splitting them off."""
subs = []
s = np.isnan(arr[:, 0])
if np.any(s):
w = np.where(s)[0]
ss = np.split(arr, w)
subs = [ss[0]]
subs.extend(i[1:] for i in ss[1:])
else:
subs.append(arr)
aa = []
for sub in subs:
aa.append([Point(*pairs) for pairs in sub])
if as_type.upper() == 'POLYGON':
poly = Polygon(Array(aa), SR)
elif as_type.upper() == 'POLYLINE':
poly = Polyline(Array(aa), SR)
return poly
def ret_envolvente(polygon, proj_geo):
array = Array()
array.add(polygon.extent.lowerLeft)
array.add(polygon.extent.lowerRight)
array.add(polygon.extent.upperRight)
array.add(polygon.extent.upperLeft)
array.add(polygon.extent.lowerLeft)
result_polygon = Polygon(array, proj_geo)
del array
return result_polygon
def view_poly(geo, id_num=1, view_as=2):
"""View a single poly feature as an SVG in the console.
Parameters
----------
geo : Geo array
The Geo array part to view.
id_num : integer
The shape in the Geo array to view.
view_as : integer
Polygon = 2, Polygon = 1, Multipoint = 0
Notes
-----
These provide information on the content of the svg representation.
>>> p0.__getSVG__()
>>> p0._repr_svg_()
f = [" M {},{} " + "L {},{} "*(len(b) - 1) for b in g0.bits]
ln = [f[i].format(*b.ravel()) for i, b in enumerate(g0.bits)]
st = "".join(ln) + "z"
"""
if id_num not in (geo.IDs):
msg = "Id ... {} ... not found.\n Use geo.IDs to see their values"
print(msg.format(id_num))
return
shp = geo.get_shapes(id_num)
z = [Array([Point(*i) for i in b]) for b in shp.bits]
if view_as == 2:
return Polygon(Array(z))
elif view_as == 1:
return Polyline(Array(z))
else:
zz = []
for i in z:
zz.extend(i)
return Multipoint(Array(zz))
def generate_squares(in_polygon, in_raster):
from arcpy import Describe, Array, Point, Polygon, da
desc = Describe(in_raster)
eXMin = desc.extent.XMin
eYMin = desc.extent.YMin
eXMax = desc.extent.XMax
eYMax = desc.extent.YMax
offset = 1
sqLen = 1
# Store extent values as list of coordinate
blX = eXMin - offset
blY = eYMin - offset
bottom_left_square = Array([
Point(blX - sqLen, blY - sqLen),
Point(blX - sqLen, blY),
Point(blX, blY),
Point(blX, blY - sqLen)
])
trX = eXMax + offset
trY = eYMax + offset
top_right_square = Array([
Point(trX, trY),
Point(trX, trY + sqLen),
Point(trX + sqLen, trY + sqLen),
Point(trX + sqLen, trY)
])
# Get coordinate system
# Open an InsertCursor and insert the new geometry
cursor = da.InsertCursor(in_polygon, ['SHAPE@'])
for sq in [bottom_left_square, top_right_square]:
# Create a polygon geometry
polygon = Polygon(sq)
cursor.insertRow([polygon])
# Delete cursor object
del cursor
def raster_extent_polygon(in_raster):
from arcpy import Array, Point, Polygon, Describe
desc = Describe(in_raster)
XMin = desc.extent.XMin
XMax = desc.extent.XMax
YMin = desc.extent.YMin
YMax = desc.extent.YMax
# Create a polygon geometry
array = Array([
Point(XMin, YMin),
Point(XMin, YMax),
Point(XMax, YMax),
Point(XMax, YMin)
])
return Polygon(array)
def linha_de_largura(self, dict_descricao, ponto):
if dict_descricao["tipo"] == "meio":
linha_nao_intersecta_ponto = None
point_circ = Point()
point_circ.X = dict_descricao["ptc_x"]
point_circ.Y = dict_descricao["ptc_y"]
array = Array([point_circ, ponto.getPart(0)])
linha_circulo = Polyline(array,self.spatial_geo_sirgas_2000)
for parte_linha in self.dict_partes:
if self.dict_partes[parte_linha]["cruza_ponto"] == False:
linha_nao_intersecta_ponto = self.dict_partes[parte_linha]["linha_geometria"]
if linha_circulo.disjoint(linha_nao_intersecta_ponto):
array.removeAll()
point_circ = Point()
point_circ.X = self.ptc_x_inv
point_circ.Y = self.ptc_y_inv
array = Array([point_circ, ponto.getPart(0)])
linha_circulo = Polyline(array,self.spatial_geo_sirgas_2000)
linha_largura = linha_circulo.intersect(self.poligono_ma_geo, 2)
array.removeAll()
else:
linha_largura = linha_circulo.intersect(self.poligono_ma_geo, 2)
array.removeAll()
return linha_largura, linha_circulo
def _trim_shoreline(islands):
"""
Trim the shoreline of micro-islands. This makes
permanent changes to the Shapefile.
"""
for island in islands:
path = path_to_shoreline(island)
pair = max(TableToNumPyArray(path, ["OID@", "SHAPE@AREA"]),
key=lambda p: p[1])
with UpdateCursor(path, ["OID@", "SHAPE@"]) as cursor:
for row in cursor:
if row[0] != pair[0]:
cursor.deleteRow()
else:
row_new = Array()
for part in row[1]:
part_new = Array()
for point in part:
if point is None:
break
part_new.add(point)
row_new.add(part_new)
row[1] = Polygon(row_new)
cursor.updateRow(row)
def bases_larguras(polygon, proj_geo):
array1 = Array()
array2 = Array()
array3 = Array()
array4 = Array()
point1 = None
point2 = None
point3 = None
point4 = None
for part in polygon:
point1 = part[0]
point2 = part[1]
point3 = part[2]
point4 = part[3]
array1.add(point1); array1.add(point2)
array2.add(point2); array2.add(point3)
array3.add(point4); array3.add(point3)
array4.add(point1); array4.add(point4)
li1 = Polyline(array1, proj_geo)
li2 = Polyline(array2, proj_geo)
li3 = Polyline(array3, proj_geo)
li4 = Polyline(array4, proj_geo)
if li1.length > li2.length:
lista_base = [li1, li3]
lista_largura = [li2, li4]
else:
lista_base = [li2, li4]
lista_largura = [li1, li3]
del array1
del array2
del array3
del array4
return lista_base, lista_largura
shp_out = GetParameterAsText(1) ### Variables utiles chp_x = "xCentroid" chp_y = "yCentroid" expr_centrX = "!SHAPE.CENTROID!.split()[0]" expr_centrY = "!SHAPE.CENTROID!.split()[1]" new_shp(path.dirname(shp_out), path.basename(shp_out), "Point", spatial_reference = shp_in) add = curs_ins(shp_out) ptArray = Array() pt = Point() ### Préalables new_chp(shp_in, chp_x, "DOUBLE", 18, 11) new_chp(shp_in, chp_y, "DOUBLE", 18, 11) ### Calcul des centroids calc_chp(shp_in, chp_x, expr_centrX, "PYTHON") calc_chp(shp_in, chp_y, expr_centrY, "PYTHON") rows = curs_rec(shp_in) i = 0 for objet in rows:
def extendAndIntersectRoadFeatures(
quarterOrHalf
): # Place the operations that extend each road line segment by a certain distance here.
# Should extend all the features that exist in the post-erase dataset. Might be more difficult
# to calculate the angle of these lines accurately, but it should be easier to figure out
# than trying to get the lines to split correctly with the buggy SplitLineAtPoint tool.
if quarterOrHalf.lower() == "quarter":
extensionLinesTextName = "createdExtensionLines_Q"
createdExtensionLines = createdExtensionLines_Q
# 9000 ft increase for _Q version.
# Must be larger than the county bufferDistance (20000)
extensionDistance = 31176
extensionLinesTextName = "createdExtensionLines_Q"
countyRoadNameRosette = countyRoadNameRosette_Q
rosetteTextName = "countyRoadNameRosette_Q"
tempRoadNameRosette = tempRoadNameRosette_Q
tempRosetteTextName = "tempRoadNameRosette_Q"
tempRoadNameRosetteSP = tempRoadNameRosetteSinglePoint_Q
tempRosetteSPTextName = "tempRoadNameRosetteSinglePoint_Q"
countyBorderFeature = countyBorderFeature_Q
elif quarterOrHalf.lower() == "half":
extensionLinesTextName = "createdExtensionLines_H"
createdExtensionLines = createdExtensionLines_H
# Must be larger than the county bufferDistance (11000)
extensionDistance = 22176
extensionLinesTextName = "createdExtensionLines_H"
countyRoadNameRosette = countyRoadNameRosette_H
rosetteTextName = "countyRoadNameRosette_H"
tempRoadNameRosette = tempRoadNameRosette_H
tempRosetteTextName = "tempRoadNameRosette_H"
tempRoadNameRosetteSP = tempRoadNameRosetteSinglePoint_H
tempRosetteSPTextName = "tempRoadNameRosetteSinglePoint_H"
countyBorderFeature = countyBorderFeature_H
else:
print "quarterOrHalf variable not correctly defined."
raise (Exception("quarterOrHalf value error."))
print "Starting to extend and intersect road features."
if Exists(createdExtensionLines):
Delete_management(createdExtensionLines)
else:
pass
CreateFeatureclass_management(inMemGDB, extensionLinesTextName, "POLYLINE",
"", "", "", spatialReferenceProjection)
# Add a column for roadname called roadNameForSplit.
AddField_management(createdExtensionLines, "roadNameForSplit", "TEXT", "",
"", "55")
# Add a column which stores the angle to display a label called called LabelAngle.
AddField_management(createdExtensionLines, "LabelAngle", "DOUBLE", "", "",
"") # Change to double.
# Add a column which stores the County Number.
AddField_management(createdExtensionLines, "County_Number", "DOUBLE", "",
"", "")
roadLinesToInsertList = list()
roadLinesList = getRoadLinesList()
for roadLinesItem in roadLinesList:
roadNameToUse = roadLinesItem[2]
countyNumber = roadLinesItem[3]
linePointsArray = ArcgisArray()
firstPointTuple = (roadLinesItem[1].firstPoint.X,
roadLinesItem[1].firstPoint.Y)
lastPointTuple = (roadLinesItem[1].lastPoint.X,
roadLinesItem[1].lastPoint.Y)
# Make this a two-step process.
# Might be as simple as
# adding _1 to the end of the first set of variables,
# adding _2 to the end of the second set of variables,
# then making the extensions in both directions
# and creating a new line that has the endpoints
# from both sides as it's first and last point.
# if necessary, could add the other points in between
# but probably not necessary just for generating
# an intersection point.
yValue_1 = -(lastPointTuple[1] - firstPointTuple[1]
) # made y value negative
xValue_1 = lastPointTuple[0] - firstPointTuple[0]
lineDirectionAngle_1 = math.degrees(math.atan2(
xValue_1, yValue_1)) # reversed x and y
lineDirectionAngle_1 = -(((lineDirectionAngle_1 + 180) % 360) - 180
) # correction for certain quadrants
#print "lineDirectionAngle: " + str(lineDirectionAngle_1)
origin_x_1 = firstPointTuple[0]
origin_y_1 = firstPointTuple[1]
yValue_2 = -(firstPointTuple[1] - lastPointTuple[1]
) # made y value negative
xValue_2 = firstPointTuple[0] - lastPointTuple[0]
lineDirectionAngle_2 = math.degrees(math.atan2(
xValue_2, yValue_2)) # reversed x and y
lineDirectionAngle_2 = -(((lineDirectionAngle_2 + 180) % 360) - 180
) # correction for certain quadrants
#print "lineDirectionAngle: " + str(lineDirectionAngle_2)
origin_x_2 = lastPointTuple[0]
origin_y_2 = lastPointTuple[1]
(disp_x_1, disp_y_1) = (extensionDistance *
math.sin(math.radians(lineDirectionAngle_1)),
extensionDistance *
math.cos(math.radians(lineDirectionAngle_1)))
(end_x_1, end_y_1) = (origin_x_1 + disp_x_1, origin_y_1 + disp_y_1)
(disp_x_2, disp_y_2) = (extensionDistance *
math.sin(math.radians(lineDirectionAngle_2)),
extensionDistance *
math.cos(math.radians(lineDirectionAngle_2)))
(end_x_2, end_y_2) = (origin_x_2 + disp_x_2, origin_y_2 + disp_y_2)
startPoint = ArcgisPoint()
endPoint = ArcgisPoint()
startPoint.ID = 0
startPoint.X = end_x_1
startPoint.Y = end_y_1
endPoint.ID = 1
endPoint.X = end_x_2
endPoint.Y = end_y_2
linePointsArray.add(startPoint)
linePointsArray.add(endPoint)
newLineFeature = ArcgisPolyLine(linePointsArray)
# Need to create an extension for both ends of the line and add them
# to the array.
#newLineFeature = createdExtensionLinesCursor.newRow()
#newLineFeature.SHAPE = linePointsArray
lineDirectionOutput = "0"
if lineDirectionAngle_1 > 0:
lineDirectionOutput = lineDirectionAngle_1
elif lineDirectionAngle_2 > 0:
lineDirectionOutput = lineDirectionAngle_2
else:
pass
roadLinesToInsertList.append(
[newLineFeature, roadNameToUse, lineDirectionOutput, countyNumber])
#createdExtensionLinesCursor.insertRow([newLineFeature, roadNameToUse, lineDirectionOutput])
if "newLineFeature" in locals():
del newLineFeature
else:
pass
# Consider building this as a separate list and then just looping
# through the list to put it into the cursor instead
# of doing logic and inserting into the cursor at the same place.
#start editing session
#newEditingSession = daEditor(sqlGdbLocation)
#newEditingSession.startEditing()
#newEditingSession.startOperation()
createdExtensionLinesCursor = daInsertCursor(
createdExtensionLines,
["SHAPE@", "roadNameForSplit", "LabelAngle", "County_Number"])
for roadLinesToInsertItem in roadLinesToInsertList:
createdExtensionLinesCursor.insertRow(roadLinesToInsertItem)
# End editing session
#newEditingSession.stopOperation()
#newEditingSession.stopEditing(True)
if "createdExtensionLinesCursor" in locals():
del createdExtensionLinesCursor
else:
pass
# Remove the previous countyRoadNameRosette so that it can be recreated.
if Exists(rosetteTextName):
Delete_management(rosetteTextName)
else:
pass
CreateFeatureclass_management(sqlGdbLocation, rosetteTextName, "POINT", "",
"", "", spatialReferenceProjection)
AddField_management(countyRoadNameRosette, "roadNameForSplit", "TEXT", "",
"", "55")
AddField_management(countyRoadNameRosette, "LabelAngle", "DOUBLE", "", "",
"") # Change to double.
AddField_management(countyRoadNameRosette, "County_Number", "DOUBLE", "",
"", "")
AddField_management(countyRoadNameRosette, "COUNTY_NAME", "TEXT", "", "",
"55")
# Now then, need to check for the existence
# of and delete the point intersection layer
# if it exists.
# Then, recreate it and the proper fields.
inMemoryCountyBorderExtension = "aCountyBorderExtensionBuffer"
inMemoryExtensionLines = "aLoadedExtensionLines"
try:
Delete_management(inMemoryCountyBorderExtension)
except:
pass
try:
Delete_management(inMemoryExtensionLines)
except:
pass
# Temporary layer, use CopyFeatures_management to persist to disk.
MakeFeatureLayer_management(
countyBorderFeature,
inMemoryCountyBorderExtension) # County Border extension feature
# Temporary layer, use CopyFeatures_management to persist to disk.
MakeFeatureLayer_management(
createdExtensionLines,
inMemoryExtensionLines) # Line extension feature
borderFeatureList = getBorderFeatureList(quarterOrHalf)
borderFeatureList = sorted(borderFeatureList,
key=lambda feature: feature[3])
for borderFeature in borderFeatureList:
borderFeatureName = borderFeature[2]
borderFeatureNumber = borderFeature[3]
print "borderFeatureName: " + str(
borderFeatureName) + " & borderFeatureNumber: " + str(
int(borderFeatureNumber))
countyBorderWhereClause = ' "COUNTY_NUMBER" = ' + str(
int(borderFeatureNumber)) + ' '
SelectLayerByAttribute_management(inMemoryCountyBorderExtension,
"NEW_SELECTION",
countyBorderWhereClause)
countyBorderSelectionCount = GetCount_management(
inMemoryCountyBorderExtension)
print "County Borders Selected: " + str(countyBorderSelectionCount)
# Had to single-quote the borderFeatureNumber because it is stored as a string in the table.
# Unsingle quoted because it was changed to a float.
extensionLinesWhereClause = ' "COUNTY_NUMBER" = ' + str(
int(borderFeatureNumber)) + ' '
SelectLayerByAttribute_management(inMemoryExtensionLines,
"NEW_SELECTION",
extensionLinesWhereClause)
extensionLineSelectionCount = GetCount_management(
inMemoryExtensionLines)
print "Extension Lines Selected: " + str(extensionLineSelectionCount)
if Exists(tempRosetteTextName):
Delete_management(tempRosetteTextName)
else:
pass
if Exists(tempRosetteSPTextName):
Delete_management(tempRosetteSPTextName)
else:
pass
Intersect_analysis(
[inMemoryCountyBorderExtension, inMemoryExtensionLines],
tempRoadNameRosette, "ALL", "", "POINT")
# Intersect to an output temp layer.
# Next, need to loop through all of the counties.
# Get the county number and use it to select
# a county extension buffer in the county
# extension buffers layer.
# Then, use the county number to select
# all of the lines for that county
# in the extension lines layer.
# Then, export those to a temp layer in the fgdb.
# Change multipoint to singlepoint.
# Was working until I moved from gisprod to sdedev for the data source.
# not sure why. Check to make sure projections match.
# ^ Fixed.
try:
# Run the tool to create a new fc with only singlepart features
MultipartToSinglepart_management(tempRoadNameRosette,
tempRoadNameRosetteSP)
# Check if there is a different number of features in the output
# than there was in the input
inCount = int(
GetCount_management(tempRoadNameRosette).getOutput(0))
outCount = int(
GetCount_management(tempRoadNameRosetteSP).getOutput(0))
if inCount != outCount:
print "Found " + str(outCount -
inCount) + " multipart features."
#print "inCount, including multipart = " + str(inCount)
#print "outCount, singlepart only = " + str(outCount)
else:
print "No multipart features were found"
except ExecuteError:
print GetMessages()
except Exception as e:
print e
print "Appending the temp point layer to the county point intersection layer."
Append_management([tempRoadNameRosetteSP], countyRoadNameRosette,
"NO_TEST")
# K, worked correctly. Just need to change LabelAngle to a float and it might be what
# I want.
print "Done adding points to the countyRoadNameRosette feature class."
def main():
# tool inputs
INPUT_NETWORK = argv[1]
INPUT_POINTS = argv[2]
INPUT_ORIGINS_FIELD = argv[3]
INPUT_DESTINATIONS_FIELD = argv[4]
INPUT_COEFF = float(argv[5])
INPUT_SEARCH_RADIUS = float(argv[6]) if is_number(
argv[6]) else float('inf')
INPUT_OUTPUT_DIRECTORY = argv[7]
INPUT_OUTPUT_FEATURE_CLASS_NAME = argv[8]
INPUT_COMPUTE_WAYFINDING = argv[9] == "true"
INPUT_VISUALIZATION = argv[10]
# check that network has "Length" attribute
if "Length" not in network_cost_attributes(INPUT_NETWORK):
AddError("Network <%s> does not have Length attribute" % INPUT_NETWORK)
return
# check that coeff is at least 1
if INPUT_COEFF < 1:
AddError("Redundancy coefficient <%s> must be at least 1" %
INPUT_COEFF)
return
# extract origin and destination ids
origin_ids = flagged_points(INPUT_POINTS, INPUT_ORIGINS_FIELD)
if len(origin_ids) != 1:
AddError("Number of origins <%s> must be 1" % len(origin_ids))
return
origin_id = origin_ids[0]
destination_ids = flagged_points(INPUT_POINTS, INPUT_DESTINATIONS_FIELD)
if len(destination_ids) == 0 or origin_ids == destination_ids:
AddWarning("No OD pair found, no computation will be done")
return
# check that the output file does not already exist
output_feature_class = "%s.shp" % join(INPUT_OUTPUT_DIRECTORY,
INPUT_OUTPUT_FEATURE_CLASS_NAME)
if Exists(output_feature_class):
AddError("Output feature class <%s> already exists" %
output_feature_class)
return
# obtain visualization method
visualize_segments = visualize_polylines = False
if INPUT_VISUALIZATION == "Unique Segments":
visualize_segments = True
elif INPUT_VISUALIZATION == "Path Polylines":
visualize_polylines = True
elif INPUT_VISUALIZATION != "None":
AddError("Visualization method <%s> must be one of 'Unique Segments', "
"'Path Polylines', or 'None'" % INPUT_VISUALIZATION)
return
# setup
env.overwriteOutput = True
# construct network and points
network, points, edge_to_points = construct_network_and_load_buildings(
INPUT_POINTS, INPUT_NETWORK)
# find redundant paths for each origin-destination
AddMessage("Computing redundant paths ...")
progress_bar = Progress_Bar(len(destination_ids), 1, "Finding paths ...")
# build output table one row at a time, starting from header row
answers = [["OrigID", "DestID", "NumPaths", "Redundancy"]]
if INPUT_COMPUTE_WAYFINDING:
answers[0].append("Wayfinding")
# visualization state
if visualize_polylines:
polylines = []
polyline_data = []
elif visualize_segments:
all_unique_segment_counts = defaultdict(int)
for destination_id in destination_ids:
if origin_id != destination_id:
all_paths = find_all_paths(network, points, INPUT_COEFF, origin_id,
destination_id, INPUT_SEARCH_RADIUS,
INPUT_COMPUTE_WAYFINDING)
if all_paths is not None:
if INPUT_COMPUTE_WAYFINDING:
(all_path_points, unique_segment_counts, num_paths,
redundancy, waypoint) = all_paths
answers.append([
origin_id, destination_id, num_paths, redundancy,
waypoint
])
else:
(all_path_points, unique_segment_counts, num_paths,
redundancy) = all_paths
answers.append(
[origin_id, destination_id, num_paths, redundancy])
if visualize_polylines:
for i, path_points in enumerate(all_path_points):
polylines.append(
Polyline(
Array([
Point(*coords) for coords in path_points
])))
polyline_data.append((origin_id, destination_id, i))
elif visualize_segments:
for edge_id in unique_segment_counts:
all_unique_segment_counts[
edge_id] += unique_segment_counts[edge_id]
progress_bar.step()
AddMessage("\tDone.")
# write out results
if len(answers) > 1:
AddMessage("Writing out results ...")
# write out to a table
write_rows_to_csv(answers, INPUT_OUTPUT_DIRECTORY,
INPUT_OUTPUT_FEATURE_CLASS_NAME)
# visualize
if visualize_polylines:
CopyFeatures_management(polylines, output_feature_class)
data_fields = ["OrigID", "DestID", "PathID"]
for field in data_fields:
AddField_management(in_table=output_feature_class,
field_name=field,
field_type="INTEGER")
rows = UpdateCursor(output_feature_class, data_fields)
for j, row in enumerate(rows):
row[0], row[1], row[2] = polyline_data[j]
rows.updateRow(row)
# create a layer of the polylines shapefile and symbolize
polylines_layer_name = "%s_layer" % INPUT_OUTPUT_FEATURE_CLASS_NAME
polylines_layer = "%s.lyr" % join(INPUT_OUTPUT_DIRECTORY,
INPUT_OUTPUT_FEATURE_CLASS_NAME)
MakeFeatureLayer_management(output_feature_class,
polylines_layer_name)
SaveToLayerFile_management(polylines_layer_name, polylines_layer,
"ABSOLUTE")
ApplySymbologyFromLayer_management(
polylines_layer,
join(path[0],
"Symbology_Layers\sample_polylines_symbology.lyr"))
add_layer_to_display(polylines_layer)
elif visualize_segments:
id_mapping, edges_file = select_edges_from_network(
INPUT_NETWORK, all_unique_segment_counts.keys(),
INPUT_OUTPUT_DIRECTORY,
"%s_edges" % INPUT_OUTPUT_FEATURE_CLASS_NAME)
AddField_management(in_table=edges_file,
field_name="PathCount",
field_type="INTEGER")
rows = UpdateCursor(edges_file, ["OID@", "PathCount"])
for row in rows:
row[1] = all_unique_segment_counts[id_mapping[row[0]]]
rows.updateRow(row)
AddMessage("\tDone.")
else:
AddMessage("No results to write out.")
def criar_poligono_app(linha_app, linha_app_frente):
array = Array()
l1_firstX = linha_app.firstPoint.X
l1_firstY = linha_app.firstPoint.Y
l1_lastX = linha_app.lastPoint.X
l1_lastY = linha_app.lastPoint.Y
l2_firstX = linha_app_frente.firstPoint.X
l2_firstY = linha_app_frente.firstPoint.Y
l2_lastX = linha_app_frente.lastPoint.X
l2_lastY = linha_app_frente.lastPoint.Y
array.add(linha_app.firstPoint)
array.add(linha_app.lastPoint)
if bool_interseccao_entre_linhas(((l1_lastX,l1_lastY),(l2_lastX,l2_lastY)),((l1_firstX,l1_firstY),(l2_firstX,l2_firstY))):
array.add(linha_app_frente.firstPoint)
array.add(linha_app_frente.lastPoint)
else:
array.add(linha_app_frente.lastPoint)
array.add(linha_app_frente.firstPoint)
array.add(linha_app.firstPoint)
polygon = Polygon(array, projecao_geo)
array.removeAll()
del array
polygon = polygon.buffer(0.000000001)
return polygon