计算列表的所有元素的总和。
输入端口
输入
This transformer accepts features with a list attribute.
Output Ports
Output
Features with the summed list attribute are output through this port.
Parameters
源列表属性
The list attribute whose elements are to be summed.
Each element must be a valid integer or floating point number. List elements that are non-numeric will be considered to have a value of 0.
Sum Attribute
The attribute used to store the sum of the list attribute elements. The default value is_sum.
Example
Suppose this feature enters this transformer:
somelist{0}.val = 12
somelist{1}.val = 0.5
SOMELIST {2} .val = 8
solosist {3} .val ='a'
somelist{4}.val = 1
Then the value assigned to the resulting sum attribute would be 21.5.
编辑变换器参数
Using a set of menu options, transformer parameters can be assigned by referencing other elements in the workspace. More advanced functions, such as an advanced editor and an arithmetic editor, are also available in some transformers. To access a menu of these options, click
beside the applicable parameter. For more information, see变压器参数菜单选项.
变压器类别
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