FME 使用手册.xls

Transformer Quick Reference FME 2006 GB For detailed information on transformers open the Workbench Help file and find the Transformers folder Transformer Brief Description 简简介介 注注意意并并非非针针对对本本文文 可可能能有有差差异异 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 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 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 AngleConverter Converts angles of a feature s 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 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 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 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 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 removing points from the original feature while preserving the original coverage topology 面状要素的边界节点抽稀 AreaOnAreaOverlayer Performs an area on area overlay All input areas are intersected against each other and resultant area features are created and output 面 面叠置运算 所有输入要素互相求交并输 出结果 AreaSmoother Smooths the feature s boundary lines by determining a new location for each vertex 面状要素的边界平滑处理 AttributeAccumulator Combines feature attributes 多项属性进行组合 AttributeClassifier Tests if the contents of the source attribute are entirely of a particular character classification and routes the feature accordingly 根据属性值是否完全属于某个字符分类 集 合 而分别输出 AttributeCopier Copies the value of an attribute to a newly created attribute 复制属性为一个新属性 AttributeCreator Adds an attribute to the feature supplying it some constant value 添加一个新属性并设置其值 AttributeExposer Exposes a series of attributes 暴露一系列属性 AttributeExpressionRemov er Removes all attributes on incoming features that match a given regular expression 删除那些名称与指定的表达式匹配的属性 AttributeFileReader Reads the contents of a file and stores them as the value for the specified attribute 读属性数据文件 将其内容保存到指定的属 性 AttributeFileWriter Writes the contents of the specified attribute to a file 将属性值写入数据文件 AttributeFilter Routes features to different output ports depending on the value of an attribute 属性过滤 根据属性值区分为不同的输出 AttributeKeeper Removes all attributes from the feature except those chosen in the list 保留指定的属性 其余全部删除 AttributePrefixer Adds a prefix or suffix to all attributes coming into the transformer 给所有输入要素的属性增加前缀或后缀 AttributeRemover Removes the attributes chosen from the feature This is normally not necessary unless the feature will later be processed by a transformer that merges attributes onto it from other features 删除指定的属性 通常在需要合并获得其它 要素的属性之前才需要做 AttributeRenamer Renames a set of attributes 属性改名 AttributeReprojector Reprojects attributes holding coordinate values from one coordinate system to another 对属性中包含的坐标进行投影变换 AttributeSetter Sets an existing attribute to a constant value 指定属性值为常量 AttributeSplitter Gives values to a number of attributes with the specified prefix which result from splitting the source attribute s value at the delimiter character 分割字符串 将输入属性的值按照指定的分 隔符写入一组属性 具有指定的前缀 AttributeTrimmer Removes any leading or trailing trim characters from the value contained in the source attribute and stores the resulting character string in the result attribute 删除输入属性的开头或结尾的空格或其它指 定的字符 并写入输出属性 BaseConverter Converts an attribute s value from one numeric system base to another putting the resulting value in a new attribute 基数转换 例如十进制转为十六进制 并写 入新的属性 BoundingBoxAccumulator Creates bounding boxes for groups of features One bounding box feature is output for each unique combination of values of the attributes specified in the GROUP BY 获得一组要素的外接矩形 输入要素将按照 指定的属性的值而分别计算 BoundingBoxReplacer Replaces the geometry of the feature with a two dimensional box whose minimums and maximums are taken from the bounds of original feature 改为原始要素的最小外接矩形 BoundsExtractor Extracts the minimum and maximum values of the feature s coordinates into new attributes 获得坐标范围 外接矩形 并写入新的属性 Bufferer Replaces the geometry of the feature with a area feature polygon or donut polygon that buffers the original feature or a line feature that is some distance away from the original feature 改为缓冲区 多边形或环状多边形 或者 缓冲区左侧和 或右侧的边界线 CaseChanger Changes the case of the value contained in the source attribute and stores the resulting character string in the result attribute 改变输入属性值的大小写并写入输出属性 CenterLineReplacer Replaces the geometry of an area feature with a line that threads through the center of the feature Only works well with long thin features 改为面状要素的中心线 适用于细长型要素 CenterOfGravityReplacer Replaces the geometry of the feature with a point that is the center of gravity of the feature The center of gravity is the average x y and possibly z coordinate of the feature 改为点状要素 坐标为原始要素的 重心 坐标的平均值 CenterPointReplacer Replaces the geometry of the feature with a point that is in the center of the feature s bounding box 改为点状要素 坐标为原始要素的最小外接 矩形的中心 ChangeDetector Detects changes between two sets of input features 检查输入的两组属性的差异 变化 CharacterCodeExtractor Extracts the integral character code of the first character in the source string attribute and adds its integer value in the character set to the feature as another attribute 获取输入属性值的第一个字符的整数字符编 码 输出为新的属性 CharacterEncoder Sets the result attribute to the character whose numeric code was contained in the source code attribute or the integer entered in 根据输入的字符编码值生成字符给输出属性 Chopper Ensures that all features output have less than or equal to vertices 按最大节点数截断所有输入要素 CircularityCalculator Calculates the circularity of an area feature which indicates how elongated the feature is 圆率 计算输入的面状要素的细长程度 Clipper Performs a geometric clipping operation 图形剪切 Cloner Makes copies of the features input and outputs all copies through its single output port 复制所有输入要素 ColorRasterCreator Creates a feature with a raster of the specified size using the parameters supplied and sends it into the workspace for processing 根据参数创建栅格要素 并输入转换流程 CommonSegmentFinder Tests to see which of the CANDIDATE features have even one segment in common with any BASE feature 公共边检查 候选要素是否具有与基准要素 相同的公共边 Concatenator Concatenates the values of any number of attributes and constants together and stores the result in a new attribute 字符串连接 将任意数量的属性值或常量数 次连接起来并输出为新的属性 ContourGenerator Generates contours from the underlying surface which is defined by the input POINTS DEM GRIDS 3D LINES and BREAKLINES 生成等高线 相应的表面由输入的点 DEM格 网 三维的线 以及断裂线等来定义 ConvexHullAccumulator Creates convex hulls for groups of features 生成分组要素的外接凸多边形 ConvexHullReplacer Replaces the geometry of the feature with a polygon representing its convex hull 将图形改为其外接凸多边形 CoordinateConcatenator Retrieves the value of all the feature s coordinates into an attribute separated by the delimiter characters 将要素的全部坐标写入一个属性 坐标之间 用指定的字符进行分隔 CoordinateCounter Stores the number of coordinates the feature has into an attribute 将坐标数量写入属性 CoordinateFetcher Retrieves the value of the x y and z coordinate at the specified index into attributes 获得指定节点号的坐标并写入属性 CoordinateRemover Removes a single coordinate from the geometry of the feature 删除要素的某个坐标 CoordinateRounder Rounds off the coordinates of the feature to the specified number of decimal places 坐标保留指定位数小数 CoordinateSystemFetcher Retrieves the coordinate system of the feature into an attribute 获得坐标系统并写入属性 CoordinateSystemRemover Removes the coordinate system from all input features 删除所有输入要素的坐标系统 CoordinateSystemSetter Tags all features with the given coordinate system 设置所有输入要素的坐标系统 Counter Adds an attribute holding the next integer in a sequence 计数器 将一个序列发生器的下一个值输出 为新的属性 CRCCalculator Calculates a CRC value as directed for a feature and places the calculated CRC value into the attribute specifed 对要素计算CRC校验值并写入属性 DateFormatter Reformats a date or time string in the Source Date attribute into a new date format 将日期或时间属性改为其它格式 Deaggregator Decomposes an aggregate feature into its components 聚合要素打散 DecimalDegreesCalculator Calculates a decimal degree value from separate degrees minutes and seconds DMS values stored in attributes 根据属性中分别保存的度 分 秒 计算以 度为单位的角度值 DEMDistanceCalculator For each input line feature a DEM is created after the reference DEM and then output DEM高差 对输入的线状要素 计算它与输 入的DEM上对应点的三维距离 并生成为另一 个DEM DEMGenerator Generates a Digital Elevation Model DEM from the input POINTS BREAKLINES and 3D LINES 根据输入的点 断裂线 三维线来生成数字 高程模型 DEM DEMRasterGenerator Generates a DEM raster from the input POINTS BREAK LINES and 3D LINES 根据输入的点 断裂线 三维线来生成数字 高程模型 DEM 栅格 格网 Densifier Adds vertices to the feature by interpolating new coordinates along its definition at some interval of distance 等间距加密节点 沿线或沿x y轴 DimensionExtractor Returns the dimension of the feature as a new attribute 获得要素的坐标维数并输出为新的属性 Dissolver Dissolves area features by removing common boundaries to create larger areas 合并面状要素 消除公共边界 DistanceSnipper Shortens the geometry of a line feature by snipping off a specified amount from the ends 剪掉线状要素两端指定的长度 DMSCalculator Calculates degrees minutes and seconds DMS from a decimal degrees value stored in an attribute 根据以度为单位的角度值计算度 分 秒 DonutBuilder Cuts holes in polygonal features by making polygons completely enclosed in other polygons into holes of the containing polygon 环的构造 使一组完全包含在另一组多边形 的输入多边形作为环中的洞 DonutHoleExtractor Splits an area feature which has holes into its component rings 环的打散 DuplicateRemover Removes duplicate features based on the value of a key attribute 根据指定属性的值删除重复要素 ElevationExtractor Extracts the elevation of the first coordinate and assigns it to the named attribute 提取第一个坐标的高程写入属性 EllipseCreator Creates an ellipse feature using the parameters supplied and sends it into the workspace for processing 根据参数创建椭圆要素 并输入转换流程 EnvelopeFilter Replaced by the SpatialFilter transformer 根据矩形范围过滤 已被空间过滤 SpatialFilter替代 EnvironmentVariable Retriever Retrieves the specified Environment Variable and puts it into the specified Attribute 获得环境变量的值并写入属性 ExpressionEvaluator Evaluates an arithmetic expression and returns the result in a new attribute 表达式计算 结果输出为新的属性 Extender Creates extensions to linear features 延长线状要素 FeatureMerger Merges the attributes of one feature onto another feature 将一个要素的属性合并到另一个要素 FeatureTypeExtractor Adds an attribute containing the original feature type of a feature 获得要素类型并输出为新的属性 FeatureTypeFilter Separates the features routed to it into their original feature types if possible 根据原来的要素类型重新区分输入的要素 GeometryCoercer Resets the geometry type of the feature 改变要素的图形类型 GeometryFilter Routes a feature based on its geometry type 根据要素的图形类型进行分类输出 GeometryRemover Completely removes the geometry of the feature 删除图形数据 GlobalVariableRetriever Reads the specified global variable and puts its value into the specified attribute 读全局变量的值 写入属性 GlobalVariableSetter Creates and sets the specified global variable to the value of the specified attribute 根据属性的值创建并设置全局变量 GMLFeatureExtractor Constructs GML documents from the input features and stores them in the specified attribute for the features that are output by the GML port 根据输入要素构建GML文档并写入属性 GMLFeatureReplacer Constructs features out of GML documents that are stored in an attribute of the input features 根据属性中存储的GML文档构建要素 GOIDGenerator Calculates a GOID Geographic Object IDentifier for each incoming feature and adds it as a new attribute The GOID is a unique 128 bit number that incorporates the position of a feature with other numbers 为输入的要素分别生成图形对象标识 GOID GOID是一个唯一的128位的数字 其中包含 了要素的位置和其它一些数字 Grepper Performs a regular expression match on the value of the specified attribute 对属性值进行表达式匹配性判断 HexDecoder Decodes the given attribute into a new attribute by converting its encoded hexadecimal value into a new ASCII string Decodes a value that has been encoded from the HexEncoder 将16进制编码的属性解码为ASCII字符串 输出为新的属性 HexEncoder Encodes the given attribute into a new attribute by converting its ASCII value into a hexadecimal string Can be undone with the HexDecoder 将属性中的ASCII字符串编码为16进制 输 出为新的属性 HoleCounter Adds a new attribute whose value is the number of holes in the feature 获得环中的孔的数量 输出为新的属性 InsidePointExtractor Generates a point guaranteed to be inside the area feature and adds the coordinates of this point to the feature as attributes 生成多边形或环的内部点 其坐标写入属性 Intersector Computes intersections between all input features breaking lines and polygons wherever an intersection occurs 计算所有输入要素的交点并打断线 面 Joiner Queries a database to retrieve attributes associated with a feature 查询数据库 获得与要素相关联的属性 KMLStyler The KMLStyler transformer can be used to either set the attributes of features that have a KML Style feature type or to set the common style attributes for a group of features 设置KML Style要素类型的属性 或对一组要 素设置共同的样式属性 Labeller Interpolates labels along a linear or polygonal feature 为线状 面状要素生成标注 LabelPointReplacer Replaces the geometry of the feature with a label point 改为对应的标注点 LatLongToMGRSConverter Calculates a Military Grid Reference System MGRS code based on the latitude and longitude values supplied in a feature s attributes 根据属性中提供的经纬度值计算MGRS 军用 格网参考系统 LengthCalculator Calculates the length of a feature and adds it as a new attribute 计算要素的长度 输出为新的属性 LineCloser Turns input linear features into areas by adding their start point as the end point 将输入的线状要素转换为面状 其中起点被 复制为终点 LineGeneralizer Reduces the density of feature coordinates by removing points from the original feature 线状要素的节点抽稀 LineJoiner Takes non intersecting lines and connects them into longer lines whenever doing so does not remove a significant node 将一组互不相交的线连接起来 LineOnAreaOverlayer Performs a line on area overlay 线 面叠置运算 LineOnLineOverlayer Performs a line on line overlay 线 线叠置运算 LineSmoother Smooths the feature s boundary lines by determining a new location for each vertex 线的平滑处理 ListBuilder Combines attributes of feature into a single list structure 根据属性 组合构造为一个列表 ListConcatenator Concatenates all the values of a list together into a single attribute 将列表的所有内容连接一个属性 ListCopier Copies a complete attribute list including all nested attributes from one list name to another 复制列表 包括其中所有的嵌套属性 ListDuplicateRem