HowTo:  Capture map coordinates with a mouse click using Python

【解决方案】

Please note, using this feature requires familiarization with the use of the Python Add-ins Wizard. Refer to the Python Add-in Guide Book found in Related Information for information on making add-ins. Click the 'ArcGIS Help 10.1 - What is a Python add-in?' link to get started.

1. Install the Python Add-in Wizard and start a project. Go through the wizard to create a new toolbar and a subsequent new tool.
2. Open the Python script that is generated for the add-in and find the tool class that was added in Step 1.
3. The function 'onMouseDownMap' passes the map's coordinates to the add-in. Delete all the other functions (def). The code should look similar to this: import arcpy

import pythonaddins



class MC(object):

"""Implementation for MouseClickSample_addin.MCtool (Tool)"""

def __init__(self):

self.enabled = True

self.shape = "NONE" # Can set to "Line", "Circle" or "Rectangle" for interactive shape drawing and to activate the onLine/Polygon/Circle event sinks.

def onMouseDownMap(self, x, y, button, shift):

pass

 4.Use the x and y variables to pass the coordinate information into the tool. The following code example shows a message box with the coordinates. 

import arcpy

import pythonaddins

class MC(object):

"""Implementation for MouseClickSample_addin.MCtool (Tool)"""

def __init__(self):

self.enabled = True

self.shape = "NONE" # Can set to "Line", "Circle" or "Rectangle" for interactive shape drawing and to activate the onLine/Polygon/Circle event sinks.

def onMouseDownMap(self, x, y, button, shift):

message = "Your mouse clicked:" + str(x) + ", " + str(y)

pythonaddins.MessageBox(message, "My Coordinates") 

The results: 

【其它相关参考】

1. 10.1 Help: Tool Class
2. 10.1 Help: Creating a Python Add-in Tool
3. Python Add-in Wizard
4. ArcGIS Help 10.1 - What is a Python Add-in

【创建及修改时间】
Created: 12/7/2012

Last Modified: 7/14/2013
【原文链接】
http://support.esri.com/en/kno ... 40730