Writer Feature Type Properties: Format Parameters
The GeoTIFF writer supports additional options through the Feature Type Properties dialog.
To access format parameters, open the Feature Type Properties dialog by clicking the properties button on a feature type in the workspace. These parameters are applicable only to the selected feature type.
Click the Format Parameters tab.
Raster Settings
World files are used to store georeferencing information for rasters. More specifically, they describe the origin, spacing, and rotation of a raster.
Enables or disables the generation of a TAB file along with the output image.
Compression
This option sets the compression to use.
This option sets the JPEG quality when using JPEG compression.
Note: Repeatedly reading and saving files may decrease the quality for this format. In addition, Workbench may not know which format data comes from, and whether it used lossy compression. If you know that source data comes from files with lossy compression, you should also set the compression level to 0. Although this compression still does not guarantee the exact copy of the source file, the output will be very close to the original.
Tile
This option specifies whether to create tiled or stripped TIFF files.
These options specify the size of tiles to create.
Specifies the number of columns and rows in a tile. This option only applies when creating a tiled file: strips are required to be the full width of the raster.
This value is required to be a multiple of 16.
Note that other options may impact this value:
- If creating a tiled file, this value must be a multiple of 16.
- If applying JPEG compression, this value must be a multiple of 8.
- If applying JPEG compression with a photometric interpretation of YCbCr, this must be a multiple of 16.
Advanced
The byte order used in the file. When writing, valid values are MSB, LSB, and machine (meaning the native byte order of the machine running FME).
Specifies whether the writer should calculate the MinSampleValue and MaxSampleValue TIFF tags values from the input raster.
Calculating the min/max values may increase translation time. Note that if this is set to Yes, the calculated values will override any explicit values specified for geotiff_tifftag_minsamplevalue and geotiff_tifftag_maxsamplevalue.
Enabling this option allows an output GEOTIFF file larger than 4GB.
Interleaving refers to the storage of multicomponent interpretations and the order in which the individual cell values are stored together. Bands in FME use Band Sequential (BSQ) interleaving indicating that they are all stored uniquely. Palettes in FME are Band Interleaved by Pixel (BIP) as each palette value is stored together with each key in the palette.
BIP may be less efficient for reading and writing by FME, but is more widely supported by other applications. If not specified, the default interleaving is BSQ.
Note: This option corresponds to the PlanarConfiguration TIFF tag. BIP corresponds to a value of 1 (Chunky), and BSQ corresponds to a value of 2 (Planar).
This option allows writing datasets with any bit depth between 1 and 32.
The color space of the image data. The available options are:
- Auto: The photometric interpretation will be implicitly determined from the FME interpretation.
- MinIsBlack: The minimum value of the raster should be displayed as black. This option only applies to numeric rasters.
- MinIsWhite: The minimum value of the raster should be displayed as white. This option only applies to numeric rasters.
- YCbCr: The values should be stored using the YCbCr color space. This option is only valid when using JPEG compression.
See the section Feature Representation for additional information.