On 27/11/11 20:45, Deanna Wilson wrote:
Project 4: Parsing rhinoceros sightings
OK, You've told us this is homework, and you appear to have made some
start but we need some more information.
Can you program in any other language other than Python?
Which version of Python are you using? Obviously 2.X but which X?
Which OS are you running?
What is arcpy? It is not one of the standard Python libraries.
What is the arrray that you are trying to use? Its not a builtin type in
Python and you don;t seem to import it from anywhere?
You are obviously allowed to use arcopy, so do we assume you could also
use the csv module to process the csv file?
Your rhinoName function is badly broken...
And addVertex is not used vbut duplicated in the code.
Inserting a few print statements at strategic places should help you see
what is happening in your code.
Now where would you like us to start?
sample of my code:
import arcpy
shapefile = "C:\\...shp"
pointFilePath = "C:\\...csv"
pointFile = open(pointFilePath, "r")
lineOfText = pointFile.readline()
dataPairList = lineOfText.split(",")
def addVertex(lat, lon, array):
vertex = arcpy.CreateObject("Point")
vertex.X = lon
vertex.Y = lat
array.add(vertex)
def addPolyline(cursor, array):
feature = cursor.newRow()
feature.shape = array
cursor.insertRow(feature)
array.removeAll()
def rhinoName(Rhino, dictionary):
if rhinoName in rhinoDictionary:
dictionary[rhinoName].append([latValue, lonValueIndex])
if rhinoName not in dictionary:
dictionary[rhinoName] = []
else:
dictionary[rhinoName]= ([latValue, lonValue])
latValueIndex = dataPairList.index("X")
lonValueIndex = dataPairList.index("Y")
vertexArray = arcpy.CreateObject("Array")
for line in pointFile.readlines():
segmentedLine = line.split(",")
latValue = segmentedLine[latValueIndex]
lonValue = segmentedLine[lonValueIndex]
vertex = arcpy.CreateObject("Point")
vertex.X = lonValue
vertex.Y = latValue
vertexArray.add(vertex)
polylineArray.add(currentPoint)
cursor = arcpy.InsertCursor(shapefile)
row = cursor.newRow()
row.Shape = vertexArray
cursor.insertRow(row)
del cursor
--
Alan G
Author of the Learn to Program web site
http://www.alan-g.me.uk/
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