Reprojector
Reprojects feature coordinates from one coordinate system to another.
Parameters
Coordinate Systems
If the feature had a coordinate system, that system is used as the source of the reprojection, and the Source Coordinate System parameter to this transformer is ignored.
如果该功能没有源坐标系,并且源坐标系参数未知,则变压器仅将特征的坐标系设置为目标坐标系,并且该功能的坐标保持不变。
笔记:If the source coordinate system is not fixed and may change from feature to feature, and the features themselves have been tagged with a coordinate system from the reader that produced them, then a single Reprojector may still be able to be used. In such a case, both the source and destination coordinate system can be set to the same value – the destination coordinate system – and the desired behavior will be accomplished.
光栅参数
TheInterpolation Type仅影响光栅数据。内容单元值以将光栅更改为指定大小。
- Nearest Neighboris the fastest but produces the poorest image quality.
- 双线性provides a reasonable balance of speed and quality.
- Bicubic最慢的,但生产吗best image quality.
- Average 4和Average 16性能类似于双线性和are useful for numeric rasters such as DEMs.
The Cell Size applies only to raster features.
- Stretch Cells:将调整光栅的单元格大小以在输入光栅中保持恢复光栅中的相同行数和列数。
- Square Cells:将改变行和列的数量以及间距,以维持大致相同的单元接地区域,并形成水平和垂直电池尺寸等于的方形单元。
- 保存细胞: 像Square Cellsoption, this option will change both the number of rows and columns and the spacing to maintain cell ground area, but will also try to preserve the original cell aspect ratio, taking into account any warping caused by the reprojection.
动态坐标系
If the destination coordinate system is specified as "_AZMEA_" or "_AZMED_", each input feature is reprojected to either an equal area or equal distance projection appropriate for that feature, respectively. In general, this causes a new coordinate system to be defined for each input feature.
每个功能都记住它具有的特定相同距离或等于区域坐标系,并且可以安全地重新恢复正常(非动态)坐标系。亚搏在线
As an example:
- 存在表示LL-WGS84(普通LAT / LONG)的地球上的点的输入特征。
- The point is reprojected to _AZMED_ via a Reprojector with source LL-WGS84 and destination _AZMED_.
- The x and y coordinates of the point are extracted into x1, y1.
- 设置x2 = x1 + 1000,y2 = y1。
- Add a vertex to the point to make the line (x1,y1) -> (x2,y2).
- 通过具有源_azmed_和目标LL-WGS84的reprojector恢复回LL-WGS84。
笔记:请注意,源是ignoredhere. We just chose _AZMED_ to help remember what is going on. Sometimes people prefer to set the source and destination both to LL-WGS84.
- Now we have changed our point into a line extending 1 km east of the original point, in lat/long.
Dynamic coordinate systems have the following limitation:
•不考虑Z,所以,在椭圆体高度为0米的几何形状中最好保存区域或距离。
Example
Usage Notes
- This transformer works with both raster and vector data.
- 该变压器不受光栅频段和调色板选择的影响。
编辑变换器参数
使用一组菜单选项,可以通过引用工作区中的其他元素来分配变压器参数。一些变压器也可提供更高级的功能,例如高级编辑器和算术编辑器。要访问这些选项的菜单,请单击除适用的参数旁边。有关更多信息,请参阅变压器参数菜单选项.
变压器类别
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TagsKeywords: pointcloud