Array (arcpy)

摘要

The array object can contain any number of geoprocessing objects such as points, geometries, or spatial references.

语法

Array ({items})
参数说明数据类型
items

Items can include a list, a Point object, or another Array object.

Object

属性

属性说明数据类型
count
(只读)

The element count of the array.

Integer

方法概述

方法说明
add (value)

Adds a point or array object to the end of the array

append (value)

Appends an object to the array in the last position.

clone (point_object)

Clone the point object.

extend (items)

Extends the array by appending elements.

getObject (index)

Returns the object at the given index position in the array.

insert (index, value)

Adds an object to the array at the specified index.

next ()

Returns the next object at the current index.

remove (index)

Removes the object at the specified index position from the array.

removeAll ()

Removes all values and creates an empty object.

replace (index, value)

Replaces the object at the specified index position in the array.

reset ()

Sets the current enumeration index (used by the next method) back to the first element.

方法

add (value)
参数说明数据类型
value

Either a point or array object can be appended to the array.

Object
append (value)
参数说明数据类型
value

Either a point or array object can be appended to the array.

Object
clone (point_object)
参数说明数据类型
point_object

A point object.

Point
extend (items)
参数说明数据类型
items

Extends the array by adding strings, integers, or lists.

Object
getObject (index)
参数说明数据类型
index

The index position of the array.

Integer
返回值
数据类型说明
Object

The array or point object at the index position.

insert (index, value)
参数说明数据类型
index

The index position of the array.

Integer
value

Either a point or array object can be inserted into the array.

Object
next ()
返回值
数据类型说明
Object

The next object at the current index.

remove (index)
参数说明数据类型
index

The index position that will be removed.

Integer
removeAll ()
replace (index, value)
参数说明数据类型
index

The index position that will be replaced.

Integer
value

The new point or array object to be added to the array.

Object
reset ()

代码实例

Array example

Create a polyline feature class from scratch.

import arcpy

# A list of features and coordinate pairs
#
coordList = [[[1,2], [2,4], [3,7]],
            [[6,8], [5,7], [7,2], [9,5]]]

# Create empty Point and Array objects
#
point = arcpy.Point()
array = arcpy.Array()

# A list that will hold each of the Polyline objects 
# 
featureList = []

for feature in coordList:
    # For each coordinate pair, set the x,y properties and add to the 
    #  Array object.
    #
    for coordPair in feature:
        point.X = coordPair[0]
        point.Y = coordPair[1]
        array.add(point)

    # Create a Polyline object based on the array of points
    #
    polyline = arcpy.Polyline(array)

    # Clear the array for future use
    #
    array.removeAll()

    # Append to the list of Polyline objects
    #
    featureList.append(polyline)

# Create a copy of the Polyline objects, by using featureList as input to 
#  the CopyFeatures tool.
#
arcpy.CopyFeatures_management(featureList, "c:/geometry/polylines.shp")

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9/15/2013