光栅选择器
Selects specific bands and palettes of a raster for subsequent transformer operations.
使用字符串中指定的标注栏和选项板索引选择标注栏和选项板。字符串可以显式指定,也可以通过属性指定。字符串的格式是bp(用空格分隔),其中B是条带索引,P是要操作的条带和调色板的调色板索引。索引是基于零的,因此第一个波段或调色板位于索引0处。
Parameters
![关闭](http://www.baooytra.com/docs/fme/2017.0/html/FME_Desktop_Documentation/FME_Transformers/Skins/Default/Stylesheets/Images/transparent.gif)
Choose whether the bands and palettes are specified explicitly in a band and palette list, or through an attribute.
![关闭](http://www.baooytra.com/docs/fme/2017.0/html/FME_Desktop_Documentation/FME_Transformers/Skins/Default/Stylesheets/Images/transparent.gif)
The function will only accept alphanumeric characters and valid symbols in the code string. The code string accepts the symbols ",", ";", and ":".
可以为一个标注栏指定多个选项板,并用逗号分隔。
Multiple band-palette pairs can be specified delimited by semicolons.
关键字ALL可以用来代替标注栏和选项板编号,以选择某个标注栏上的所有标注栏或所有选项板。不能在所有标注栏上选择特定的选项板。
![关闭](http://www.baooytra.com/docs/fme/2017.0/html/FME_Desktop_Documentation/FME_Transformers/Skins/Default/Stylesheets/Images/transparent.gif)
Specify the attribute containing the band and palette list string.
Example
所有波段 | ALL |
所有标注栏和所有选项板 | 全部全部 |
first palette of the first band of a raster | 0 0 |
第一波段的第一调色板和第三波段的第一调色板 | 0 0;2 0 |
光栅的前三个波段(不带调色板) | 0;1;2 |
the first three bands of the raster (with their palettes) | 0全部;1全部;2全部 |
使用说明
- This function overrides any existing selection on the raster. All unspecified bands and palettes on a raster after selection are treated as unselected for future operations. Selection is not considered by writers, so use the光栅带分离器以及过滤,以将条带和选项板的子集作为单个特征写入。
- It is possible to select bands without selecting the attached palettes.
- It is NOT possible to select palettes without selecting the owning band.
- 不能在所有标注栏上选择特定的选项板;例如,所有2个标注栏。
编辑变压器参数
使用一组菜单选项,可以通过引用工作空间中的其他元素来指定转换器参数。更高级的功能,如高级编辑器和算术编辑器,也可以在一些变压器。要访问这些选项的菜单,请单击在适用参数旁边。有关详细信息,请参阅变压器参数菜单选项.
变压器类别
FME Licensing Level
FME Professional edition and above
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TagsKeywords: raster grid band channel palette lookup LUT colormap colourmap selection select modify