Hi,
My code below was working with an older version of ArcGIS Pro (2.6) but I am getting errors when running it with version 2.8. Does anyone know why this would be happening?
import arcpy
import dirfind
from arcpy import env
import os
from pathlib import Path
import time
import pandas as pd
# Set workspace environment
dropbox_dir = dirfind.guess_dropbox_dir()
input_gdb = dropbox_dir + 'Trase/Indonesia/palm/logistics/odmatrix2021.gdb'
env.workspace = dropbox_dir + 'Trase/Indonesia/palm/logistics/odmatrix2021.gdb'
env.overwriteOutput=True
# Specify island for create OD matrix analysis
# Options: kalimantan, sumatera, sulawesi, papua and jawa
island = "papua"
# Set inputs (mills, refineries or ports)
origins = os.path.join(input_gdb, "mills")
destinations = os.path.join(input_gdb, "kab_centroids")
network = os.path.join(input_gdb, island, island+"_ND")
# Get field names for origin and destination points
orig_field_names = [f.name for f in arcpy.ListFields(origins)]
print(orig_field_names)
dest_field_names = [f.name for f in arcpy.ListFields(destinations)]
print(dest_field_names)
def calcDistances(origins, network, destinations, outLoc):
"""
Uses a transportation network and list of origins and destinations points to
find the total distance from origins to destinations. Exports the names of
origin-destination and distance in meters as a csv file
Parameters
----------
network: road network data converted to a network datasets
origins: feature class of origins as points
destinations: feature class of origins as points
outLoc: location of output feature layer (in gdb)
Returns
-------
csv: CSV file with names of OD links and distances
ODCostMatrix: feature layer of OD cost matrix with OD lines, origins
destinations, etc
"""
outNALayerName = "distMatrix"
outLayerFile = outNALayerName
# Make OD Cost Matrix Layer
stime = time.time()
print ("Creating OD layer...")
outNALayer = arcpy.MakeODCostMatrixLayer_na(network, outNALayerName, "Length",\
"", "", "", "ALLOW_UTURNS", "", "NO_HIERARCHY", "", "STRAIGHT_LINES", "")
outNALayer = outNALayer.getOutput(0)
#Get the names of all the sublayers within the OD cost matrix layer.
subLayerNames = arcpy.na.GetNAClassNames(outNALayer)
#Stores the layer names that we will use later
origLayerName = subLayerNames["Origins"]
destLayerName = subLayerNames["Destinations"]
linesLayerName = subLayerNames["ODLines"]
#Adjust field names according to origin and destination codes
oriField = "Name " + orig_field_names[2] + " #"
destField = "Name " +dest_field_names[6] + " #"
# Add origins
print("Loading Origins...")
arcpy.AddLocations_na(
outNALayer,
origLayerName,
origins,
oriField,
"30 Kilometers",
"",
"",
"MATCH_TO_CLOSEST",
"APPEND",
"NO_SNAP",
"5 Meters",
"INCLUDE",
""
)
# Add destinations
print("Loading Destinations...")
arcpy.AddLocations_na(
outNALayer,
destLayerName,
destinations,
destField,
"30 Kilometers",
"",
"",
"MATCH_TO_CLOSEST",
"APPEND",
"NO_SNAP",
"5 Meters",
"INCLUDE",
""
)
print("Solving...")
# Solve od cost matrix
arcpy.Solve_na(outNALayer, "SKIP", "TERMINATE", "")
print ("Finished in %.0f" % (time.time() - stime))
print("Solved! Saving...")
arcpy.SaveToLayerFile_management(outNALayer, outLayerFile, "RELATIVE")
# Extract lines layer, export to CSV
fields = ["Name", "Total_Length"]
for lyr in outNALayer.listLayers():
if lyr.name == linesLayerName:
print("Saving lines...")
with open(outFile, 'w') as f:
f.write(','.join(fields)+'\n') # csv headers
with arcpy.da.SearchCursor(lyr, fields) as cursor:
for row in cursor:
f.write(','.join([str(r) for r in row])+'\n')
df = pd.read_csv(outFile, index_col=None, header=0)
df = df.drop_duplicates(keep='first')
df.to_csv(outFile,index=False)
print("Script completed successfully")
# Deleteing in memory outNAlayer
arcpy.Delete_management(outNALayer)
outFile = (
dropbox_dir
+ "Trase/Indonesia/palm/logistics/output/2021/"
+ island
+ "_"
+ Path(origins).name
+ "_"
+ Path(destinations).name
+ "_odmatrix.csv"
) # csv file output and location
calcDistances(origins, network, destinations, input_gdb)
This is the error I get when I run the code:
['OBJECTID', 'Shape', 'trase_code']
['OBJECTID', 'Shape', 'type', 'prov', 'prov_code', 'kab', 'kab_code']
Creating OD layer...
Loading Origins...
Loading Destinations...
Solving...
Traceback (most recent call last):
File "<ipython-input-5-14840f252f73>", line 160, in <module>
calcDistances(origins, network, destinations, input_gdb)
File "<ipython-input-5-14840f252f73>", line 124, in calcDistances
arcpy.Solve_na(outNALayer, "SKIP", "TERMINATE", "")
File "C:\Program Files\ArcGIS\Pro\Resources\ArcPy\arcpy\na.py", line 3182, in Solve
raise e
File "C:\Program Files\ArcGIS\Pro\Resources\ArcPy\arcpy\na.py", line 3179, in Solve
retval = convertArcObjectToPythonObject(gp.Solve_na(*gp_fixargs((in_network_analysis_layer, ignore_invalids, terminate_on_solve_error, simplification_tolerance, overrides), True)))
File "C:\Program Files\ArcGIS\Pro\Resources\ArcPy\arcpy\geoprocessing\_base.py", line 512, in <lambda>
return lambda *args: val(*gp_fixargs(args, True))
ExecuteError: ERROR 030212: Solve did not find a solution.
No solution found.
Failed to execute (Solve).
