I am working on building polylines from an array of points I have created from a csv file and am completely lost in building the lines. My code works as follows: I have the point array working, I need help in creating the polylines from the point array. Please note I am also wanting to add the name into the new polyline feature.
# Reads a csv file to create points of locationsimport arcpyprint "==============RESTART===================="# Set up variablesspreadsheet = "C:\\Users\\Desktop\\RhinoObservations2.csv" # input file with coordinatesouputFC = Rhino_Path # defines the name of the ouput feature class# Open the CSV file and read the header line. "r" is read the fileobservationsFile = open (spreadsheet, "r")print observationsFileheaderLine = observationsFile.readline() # reads all lines in CSV??print headerLine# Determine the indicies of the columns "X","Y","Rhino"fieldList = headerLine.split(",")print fieldListxIndex = fieldList.index("X")print xIndexyIndex = fieldList.index("Y")print yIndexrhinoIndex = fieldList.index("Rhino")print rhinoIndex# Set up new dictionary where the Rhino information is storedrhinoDictionary = {}# Loop through the remaining line of the input file; for each line....for line in observationsFile.readlines(): print line # Determine the rhino name, X,Y coordintes from that line segmentedLine = line.split(",") rhino = segmentedLine[rhinoIndex] x = segmentedLine[xIndex] y = segmentedLine[yIndex] # Create an object of the the class Point (defined in the arcpy module) for the X Y coordinate coords = arcpy.Point(x,y) # If this rhino is not already in the dictionary if not rhino in rhinoDictionary: # Create a new object of class Array, add the object point, and then put array into dictionary # under the name of the Rhino coordArray = arcpy.Array() #setting up an empty list to store points coordArray.add(coords) #list that contains one point rhinoDictionary[rhino] = coordArray # Else else: # Get the array object from the dictionary for this Rhino and add the point to the array. coordArray = rhinoDictionary[rhino] coordArray.add(coords)# Print out the information in the dictionaryfor key in rhinoDictionary: print key print "This is the point array: " + str(rhinoDictionary[key]) for p in rhinoDictionary[key]: print "(" + str(p.X) + ", " + str(p.Y) + ")" # Take the array and create polylines from it. print "========"# Create polylines and add them to the feature class
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# Reads a csv file to create points of locationsimport arcpyprint "==============RESTART===================="# Set up variablesspreadsheet = "C:\\Users\\Desktop\\RhinoObservations2.csv" # input file with coordinatesouputFC = Rhino_Path # defines the name of the ouput feature class# Open the CSV file and read the header line. "r" is read the fileobservationsFile = open (spreadsheet, "r")print observationsFileheaderLine = observationsFile.readline() # reads all lines in CSV??print headerLine# Determine the indicies of the columns "X","Y","Rhino"fieldList = headerLine.split(",")print fieldListxIndex = fieldList.index("X")print xIndexyIndex = fieldList.index("Y")print yIndexrhinoIndex = fieldList.index("Rhino")print rhinoIndex# Set up new dictionary where the Rhino information is storedrhinoDictionary = {}# Loop through the remaining line of the input file; for each line....for line in observationsFile.readlines(): print line # Determine the rhino name, X,Y coordintes from that line segmentedLine = line.split(",") rhino = segmentedLine[rhinoIndex] x = segmentedLine[xIndex] y = segmentedLine[yIndex] # Create an object of the the class Point (defined in the arcpy module) for the X Y coordinate coords = arcpy.Point(x,y) # If this rhino is not already in the dictionary if not rhino in rhinoDictionary: # Create a new object of class Array, add the object point, and then put array into dictionary # under the name of the Rhino coordArray = arcpy.Array() #setting up an empty list to store points coordArray.add(coords) #list that contains one point rhinoDictionary[rhino] = coordArray # Else else: # Get the array object from the dictionary for this Rhino and add the point to the array. coordArray = rhinoDictionary[rhino] coordArray.add(coords)# Print out the information in the dictionaryfor key in rhinoDictionary: print key print "This is the point array: " + str(rhinoDictionary[key]) for p in rhinoDictionary[key]: print "(" + str(p.X) + ", " + str(p.Y) + ")" # Take the array and create polylines from it. print "========"# Create polylines and add them to the feature class
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