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[原创]FME函数速查手册(9)-Transformer Quick-Reference(9)

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更多 发布于:2006-08-19 09:37

RasterSegmenter

Segments a raster (coalesces similar components) by analyzing the histograms of the components and identifying units that are homogeneous with the fuzzy c-means technique.

栅格分段

Recorder

Saves a copy of all the features that enter to a disk file.

记录器:将一批要素写入磁盘文件作为备份,将来可以利用播放器(Player)调回

ReprojectAngleCalculator

Calculates the reprojected angle of a line, which is useful for calculating reprojected text angles.

线的角度的投影变换

ReprojectLengthCalculator

Calculates the reprojected length of a line, which is useful for calculating reprojected text heights.

线的长度的投影变换

Reprojector

Reprojects feature coordinates from one coordinate system to another.

坐标投影变换

Rotator

Rotates features in a counterclockwise direction about the specified point by the rotation angle (measured in degrees).

二维旋转,须指定轴点、角度(逆时针方向)

RubberSheeter

Performs warping operations on the spatial coordinates of features.

坐标纠正

Sampler

Discards input features, preserving only every th feature.

要素抽样:舍弃抽样率之外的所有要素

Scaler

Scales the coordinates of the feature by some multipliers.

坐标按比例缩放

SchemaMapper

The SchemaMapper is used to map the schema (attributes and feature types) of features based on a schema mapping table.

根据数据模式对照表改变属性和要素类型

SectorGenerator

Point features are input with the following data contained in the chosen attributes: site name, sector name (optional), azimuth, and radius.

构建Voronoi区片

SelfIntersector

Checks each feature and removes self-intersections.

检查并消除自相交

Snapper

Snaps end points of lines together if they are within the distance of each other.

将限差范围内的线的端点捕捉到一起

Sorter

Sorts features by an attribute’s value.

根据属性值排序

SpatialFilter

Filters features based on spatial relationships.

根据空间关系进行过滤

SpatialRelator

Determines topological (spatial) relationships between sets of features

确定要素之间的拓扑(空间)关系

SQLExecutor

Executes an arbitrary SQL statement against a database.

执行任意的SQL

StatisticsCalculator

Calculates statistics based on a designated attribute of the incoming features.

对输入要素的属性进行统计

StringFormatter

Reformats the given source attribute according to the Tcl format command. Strings, characters, and numbers in decimal, octal, and hexidecimal format can be formatted.

根据Tcl格式命令对输入的属性重新格式化,包括字符串、字符、十进制/八进制/十六进制数字等

StringLengthCalculator

Calculates the length of the string in Source Attribute. The value is put into the String Length Attribute.

计算属性值字符串的长度,并写入属性

[此贴子已经被作者于2006-8-19 9:38:28编辑过]
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