I have an assignment to create a polyline feature class of rhino tracks
from a csv file. I am getting an error that says "unbound method add()
must be called with Array instance as first argument (got type instance)".
this is for line 104, the line I underlined and put in bold below in my
code. What does this mean? If there are other obvious code issues, please
feel free to comment. I am unsure if my code is correct. Thank you for
your time!
Cheers,
Carie
# Reads rhino positions from an Excel-originating CSV file
import arcpy
from arcpy import env
import fileinput
import string
import os
env.overwriteOutput = True
# Hard code file paths
spreadsheet = "C:/WCGIS/Geog485/Lesson4/
RhinoObservations.csv"
# Sample of data
###Observer,X,Y,Rhino,Comments
##Ben,26.99391,-19.10447,Bo,
##Ben,27.00071,-19.1089,Tulip,Bathing
##Ben,26.9919,-19.10511,Bo,
##Ben,27.00071,-19.1059,Tulip,
##Ben,26.96809,-19.09578,Patches,
##Ben,26.97808,-19.11016,Dinky,
##Ben,26.99213,-19.10395,Bo,
##Ben,27.00083,-19.10326,Tulip,
##Ben,26.97038,-19.09863,Patches,Not doing much of anything
##Ben,26.97768,-19.11153,Dinky,
##Ben,26.99107,-19.10421,Bo,
##Ben,27.00138,-19.1021,Tulip,
##Ben,26.97122,-19.0991,Patches,
##Ben,26.97551,-19.11269,Dinky,
##Ben,26.9904,-19.10553,Bo,
##Ben,26.99893,-19.10342,Tulip,
# output feature class?? feature class doesn't exist yet, so not sure how
to do this??
fcname = "C:/WCGIS/Geog485/Lesson4"
outname = "C:/WCGIS/Geog485/Lesson4/Rhino.shp"
# Open the CSV file & read the header line
observations = open(spreadsheet, "r")
headerline = observations.readline()
fieldList = headerline.split(",")
### 0 1 2 3 4
### Observer,X,Y,Rhino,Comments
# Look through the header to find "X", "Y" and the "Rhino" field indices
rhinoIndex = fieldList.index("Rhino")
xIndex = fieldList.index("X")
yIndex = fieldList.index("Y")
## print "Rhino "+str(rhinoIndex) +" X "+str(xIndex)+" Y "+str(yIndex)
# Create a list / array for RhinoTracks
rhinoTracks = {}
# create the output feature class
arcpy.CreateFeatureclass_management ("C:/WCGIS/Geog485/Lesson4",
"Rhino.shp", "POLYLINE")
# open an insert cursor for the new feature class
cur = arcpy.InsertCursor(outname)
# Loop through the rest of the file to read in all of the rhinos
for line in observations.readlines():
##Ben,26.99391,-19.10447,Bo,
segmentedLine = line.split(",")
rhino = segmentedLine[rhinoIndex]
#print rhino
# If rhino exists in dictionary - get the array from its key & add a
point
if rhino in rhinoTracks:
coordArray = rhinoTracks[rhino]
# create a new row or feature, in the feature class
## coordArray { [x,y] }
lineArray = arcpy.Array()
coord = arcpy.Point
coord.X = segmentedLine[xIndex]
coord.Y = segmentedLine[yIndex]
## add point to coordinate array
coordArray.add(coord)
#print "Rhino is "+rhino+" added point
"+str(segmentedLine[xIndex])+" "+str(segmentedLine[yIndex])
## coordArray { [x,y],[x1,y1] }
feat = cur.newRow()
# set the geometry of the new feature to the array of points
feat.shape = lineArray
#insert the feature
cur.insertRow(feat)
lineArray.removeAll()
lineArray.add(coord)
# If rhino doesn't exist in dictionary - make a new array & add a point
else:
cur = arcpy.InsertCursor(outname)
## Create a coordinate array
coordArray = arcpy.Array
## Create a point object
coord = arcpy.Point
coord.X = segmentedLine[xIndex]
coord.Y = segmentedLine[yIndex]
## add point to coordinate array
*coordArray.add(coord)
* feat = cur.newRow()
# set the geometry of the new feature to the array of points
feat.shape = lineArray
#insert the feature
cur.insertRow(feat)
lineArray.removeAll()
lineArray.add(coord)
## add coordinate array to my Dictionary (list of rhinos)
rhinoTracks[rhino] = coordArray
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