SetParameterAsText

摘要

使用字符串值按索引或参数名称设置指定参数属性。 此函数用于将值从脚本传递到脚本工具。 如果您需要传递对象，例如 SpatialReference 对象，请使用 SetParameter 函数。

语法

SetParameterAsText (index, text)

参数	说明	数据类型
index	The specified parameter's index position or parameter name.	Integer
text	The string value that will set the specified parameter's property.	String

代码示例

SetParameterAsText 示例

按索引将字符串传递到指定工具参数。

import arcpy

# Get the feature class from the tool.
fc = arcpy.GetParameterAsText(0)

# Determine the shape type of the feature class.
describe = arcpy.Describe(fc)

# Set tool output parameters based on shape type.
if describe.shapeType == "Polygon":
    arcpy.AddMessage("Feature Type is polygon")
    arcpy.SetParameterAsText(1, "true")  # Is polygon
    arcpy.SetParameterAsText(2, "false") # Is not line
    arcpy.SetParameterAsText(3, "false") # Is not point

elif describe.shapeType == "Polyline":
    arcpy.AddMessage("Feature Type is polyline")
    arcpy.SetParameterAsText(1, "false") # Is not polygon
    arcpy.SetParameterAsText(2, "true")  # Is line
    arcpy.SetParameterAsText(3, "false") # Is not point

elif describe.shapeType == "Point":
    arcpy.AddMessage("Feature Type is point")
    arcpy.SetParameterAsText(1, "false") # Is not polygon
    arcpy.SetParameterAsText(2, "false") # Is not line
    arcpy.SetParameterAsText(3, "true")  # Is point

else:
    arcpy.AddMessage("Unknown feature type")
    arcpy.SetParameterAsText(1, "false") # Is not polygon
    arcpy.SetParameterAsText(2, "false") # Is not line
    arcpy.SetParameterAsText(3, "false") # Is not point

SetParameterAsText 示例

按参数名称将字符串传递到指定工具参数。

该工具有四个参数，一个输入和三个输出。 参数名称为 in_features、is_polygon、is_line 和 is_point。

import arcpy

# Get the feature class from the tool.
fc = arcpy.GetParameterAsText("in_features")

# Determine the shape type of the feature class.
describe = arcpy.Describe(fc)

# Set tool output parameters based on shape type.
if describe.shapeType == "Polygon":
    arcpy.AddMessage("Feature Type is polygon")
    arcpy.SetParameterAsText("is_polygon", "true")
    arcpy.SetParameterAsText("is_line", "false")
    arcpy.SetParameterAsText("is_point", "false")

elif describe.shapeType == "Polyline":
    arcpy.AddMessage("Feature Type is polyline")
    arcpy.SetParameterAsText("is_polygon", "false")
    arcpy.SetParameterAsText("is_line", "true")
    arcpy.SetParameterAsText("is_point", "false")

elif describe.shapeType == "Point":
    arcpy.AddMessage("Feature Type is point")
    arcpy.SetParameterAsText("is_polygon", "false")
    arcpy.SetParameterAsText("is_line", "false")
    arcpy.SetParameterAsText("is_point", "true")

else:
    arcpy.AddMessage("Unknown feature type")
    arcpy.SetParameterAsText("is_polygon", "false")
    arcpy.SetParameterAsText("is_line", "false")
    arcpy.SetParameterAsText("is_point", "false")