.pyt spatial reference help?

KevinBell

I need to make a python toolbox that takes a Lat, Long, buffer distance and returns a list of addresses.  I'm getting hung up on the spatial reference right now.  The buffer is created, but has no SR...   hmmm...  what am I doing wrong here?

import arcpy

import os

WKID = 4326 # WGS-1984

sr = arcpy.SpatialReference()

sr.factoryCode = WKID

sr.create()

arcpy.env.outputCoordinateSystem = sr

class Toolbox(object):

    def __init__(self):

        self.label = "Get Nearby Addresses"

        self.alias = ""

        # List of tool classes associated with this toolbox

        self.tools = [GetNearbyAddresses]

class GetNearbyAddresses(object):

    def __init__(self):

        self.label = "Get Nearby Addresses"

        self.description = "Get Nearby Addresses within a buffer."

        self.canRunInBackground = False

    def getParameterInfo(self):

       

        params = []

       

        param0 = arcpy.Parameter(

            displayName = "Latitude",

            name = "lat",

            datatype = "Long",

            parameterType = "Required",

            direction = "Input")

        params.append(param0)

       

        param1 = arcpy.Parameter(

                    displayName = "Longitude",

                    name = "lon",

                    datatype = "Long",

                    parameterType = "Required",

                    direction = "Input")

        params.append(param1)

       

        param2 = arcpy.Parameter(

            displayName = "Buffer Distance",

            name = "distance",

            datatype = "Long",

            parameterType = "Required",

            direction = "Input")

        params.append(param2)

       

        param3 = arcpy.Parameter(

                    displayName = "Address List",

                    name = "addresses",

                    datatype = "GPString",

                    parameterType = "Derived",

                    direction = "Output")

        params.append(param3)       

        return params

    def execute(self, parameters, messages):

        try:

            arcpy.env.workspace = r'E:\gis\default.gdb'

            arcpy.env.overwriteOutput = True

           

            lat = parameters[0].valueAsText

            lon = parameters[1].valueAsText

            distance = parameters[2].valueAsText

           

            inpoint = arcpy.Point(X=lon, Y=lat)

            ptGeometry = arcpy.PointGeometry(inpoint)   

            arcpy.Buffer_analysis(ptGeometry, 'buffer', distance, \

                                  "FULL", "ROUND", "NONE", "")

            print 'made the buffer.'

        except Exception, ErrorDesc:

            sErr = "ERROR:\n" + str(ErrorDesc)

            messages.addErrorMessage(sErr)

        return

JasonScheirer

Get rid of that whole part at the top of your script where you create the sr and set the environment. It'll only get executed once and may get clobbered by anything else. Instead set it on the point:

ptGeometry = arcpy.PointGeometry(inpoint, arcpy.SpatialReference(4326))