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在本教程中,您将学习如何使用轮廓生成器和数字高程模型(DEM)创建轮廓线。The ContourGenerator in FME constructs a Delaunay triangulation based on the input value of the raster cells which are then used to generate contour lines.
In this scenario,您将从DEM创建等高线,因为您希望创建一个50米的等高线数据集供以后使用。
将所有其他参数保留为默认值,然后单击“确定”接受对轮廓发生器参数的更改。The ContourGenerator Parameters dialog should look similar to the one in the screen capture provided below:
Note: the default dimension of the output of the ContourGenerator is 3D.
The purpose of this transformer is to combine paths to have one record per Path ID rather than having segmented contour lines.
注:为了组合管线,they must meet at the exact same start/end point.此外,在三条或更多条线会聚的点处,线将保持断开。有关更多信息,请参阅线路组合器文档.
本教程中使用的数据源于City of Vancouver,不列颠哥伦比亚省。它包含根据开放政府许可证(温哥华)获得许可的信息。
?2019安全亚搏在线软件公司|合法的