fme函数速查表.doc

2006GB Transformer 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. 改为二维圆弧，圆弧的形状由参数控制，例如常数或属性值 2DBoxReplacer Replaces the geometry of the feature with a two-dimensional box whose minimums and maximums are fixed val-ues, or are taken from attributes in the original feature. 改为二维矩形，矩形的最大最小坐标为指定的常数或原始要素的属性值 （所获得的二维矩形与原图相同）2DCreator Creates a two-dimensional feature using the parameters supplied, and sends it into the workspace for processing. 根据参数创建二维要素，并输入转换流程 2DEllipseReplacer Replaces the geometry of the feature with a two-dimensional ellipse whose shape is set by the parameters. 改为二维椭圆，椭圆的形状由参数控制 2DForcer Removes any elevation (Z) coordinates which may (or may not) have been present on the original feature. 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 specified. 按格网方式生成一批二维点状（点是网格顶点）或面状要素，须指定原点和间距 2DGridReplacer Replaces the input features with a grid of two-dimensional point features that have the specified spacing, and which cover (at least) the bounding box area of all the features that enter the transformer. 将输入的一批要素改为按格网方式生成的二维点状（网格顶点）或面状要素，格网的范围（至少）覆盖全部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 taken from attributes in the original feature. 给要素增加一个二维的节点（最后一个节点），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 are taken from attributes in the original feature. 改为二维的点，其坐标由原始要素的属性获得 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. 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. 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 the entered floating point number). 改为三维要素，Z坐标由指定的属性或常数获得 3DInterpolator Interpolates elevation values along a linear feature from a starting value to an ending value. 三维插值：沿着一个线状要素、根据起始值和结束值内插高程 3DPointAdder Adds a three-dimensional point as the last vertex of the feature. The ordinates are taken from attributes in the original feature. 给要素增加一个三维的节点（最后一个节点），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. 坐标仿射变换 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 features. 仿射纠正，用于纠正一批要素使之最接近参考要素 AggregateFilter Routes features differently depending on if their geometry consists of an aggregate of several primitive geometries, or if it is a simple, single piece geometry. 聚合过滤：根据图形是否为聚合类型（两个及两个以上的图形合并形成的几何）而分别输出 Aggregator Combines feature geometries into aggregates. One aggregate feature is output for each unique combination of values of the attributes specified in the GROUP BY. 聚合：凡是分组属性值相同的要素被组合为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. 锚点捕捉，将候选要素的端点捕捉到锚点要素的端点，锚点要素不输出 Angle Converter Converts angles of a features geometry and/or attributes from one representation to another. 转换要素的图形或属性中的角度为不同的表达格式 Arc Creator 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 Arc Estimator 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. 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. 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. 将圆弧打散为线串：沿着圆弧内插节点。

Area Calculator 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 features area. formats that support color will then render the interior feature in the set color. 面状要素的填充颜色设置，适用于支持颜色的数据格式 AreaGeneralizer Reduces the density of area feature boundary coordinates by remo。