改为二维圆弧，其参数由原始线状要素的开 始、中间、结束三个点计算而出
ArcSDEQuerier
Performs queries on an ArcSDE spatial database. The queries can have both a spatial as well as nonspatial component.
Transformer Quick-Reference – FME 2006 GB
For detailed information on transformers, open the Workbench Help file and find the Transformers folder.
Transformer
仿射纠正，用于纠正一批要素使之最接近参 考要素
features.
AggregateFilter
Routes features differently depending on if their geometry consists of an aggregate 聚合过滤：根据图形是否为聚合类型而分别
改为二维要素（删除Z坐标）
2DGridCreator
Creates a grid of two-dimensional point features, at the origin and using the offsets 按格网方式生成一批二维点状要素，须指定
specified.
原点和间距
Replaces the input features with a grid of two-dimensional point features that have 将输入的一批要素改为按格网方式生成的二
改为二维圆弧（注：原文如此），圆弧的形 状由参数控制，例如常数或属性值
3DCreator
Creates a three-dimensional feature using the parameters supplied, and sends it into the workspace for processing.
2DEllipseReplacer
Replaces the geometry of the feature with a two-dimensional ellipse whose shape 改为二维椭圆，椭圆的形状由参数控制 is set by the parameters.
2DForcer
Removes any elevation (Z) coordinates which may (or may not) have been present on the original feature.
达格式
ArcCreator
Creates an arc feature using the parameters supplied, and sends it into the workspace for processing.
根据参数创建二维圆弧要素，并输入转换流 程
ArcEstimator
Replaces the geometry of the feature with a two-dimensional circular arc whose shape is estimated from the first, middle, and last point of the linear feature passed in.
得
3DArcReplacer
Replaces the geometry of the feature with a two-dimensional arc whose shape is set by the parameters, which can be either constant floating point values or the values of existing attributes.
taken from attributes in the original feature.
点），其坐标由原始要素的属性获得
3DPointReplacer
Replaces the geometry of the feature with a three-dimensional point whose ordinates are taken from attributes in the original feature.
改为三维的点，其坐标由原始要素的属性获 得
Affiner
Performs an affine transformation on the coordinates of the feature.坐标仿射Leabharlann 换AffineWarper
Performs warping operations on the spatial coordinates of features. It is used to adjust a set of observed features so they more closely match some set of reference
Brief Description
简介（注意并非针对本文，可能有差异）
2DArcReplacer
Replaces the geometry of the feature with a two-dimensional arc whose shape is set by the parameters, which can be either constant floating point values or the values of existing attributes.
2DGridReplacer
the specified spacing, and which cover (at least) the bounding box area of all the 维点状要素，格网的范围（至少）覆盖全部
features that enter the transformer.
将圆弧打散为线串：沿着圆弧内插节点。
AreaCalculator
Calculates the area of a polygonal feature and adds it as a new attribute.
面积计算：将多边形要素的面积写为属性
AreaFillColorSetter
Sets the fill color for the feature's area. Formats that support color will then render 面状要素的填充颜色设置，适用于支持颜色
each unique combination of values of the attributes specified in the GROUP BY.
一个单独的聚合类型的要素输出
AnchoredSnapper
Snaps endpoints of features entering via the CANDIDATE port to endpoints of features entering via the ANCHOR port. ANCHOR features are not output.
the interior feature in the set color.
的数据格式
AreaGeneralizer
Reduces the density of area feature boundary coordinates by removing points from 面状要素的边界节点抽稀 the original feature while preserving the original coverage topology.
根据参数创建三维要素，并输入转换流程
3DForcer
Sets all the Z coordinates of the feature to the value of the specified attribute (or 改为三维要素，Z坐标由指定的属性或常数获
the entered floating point number).
对ArcSDE空间数据库执行查询，可包含空间 和非空间条件
ArcStroker
Converts arc features into lines replacing the feature geometry with a series of points interpolated along the arc boundary.
点），其坐标由原始要素的属性获得
2DPointReplacer
Replaces the geometry of the feature with a two-dimensional point whose ordinates 改为二维的点，其坐标由原始要素的属性获
are taken from attributes in the original feature.
输入要素的外接矩形，格网间距须指定
2DPointAdder
Adds a two-dimensional point as the last vertex of the feature. The ordinates are 给要素增加一个二维的节点（最后一个节
taken from attributes in the original feature.
of several primitive geometries, or if it is a simple, single piece geometry.
输出
Aggregator
Combines feature geometries into aggregates. One aggregate feature is output for 聚合：凡是分组属性值相同的要素被组合为