Esri Geodatabase (File Geodb Mosaic Dataset) Writer Parameters

Note   The values populated in this parameter box set the values for writer parameters and for feature type parameters. Since some feature type parameters have equivalent writer-level parameters, the parameter box value will be used in two places.

The feature type parameters take precedence over writer parameters. The only time the writer-level parameters will be used is when there is no equivalent feature type parameter, or if the parameter was not supplied.

Geodatabase

Select the File Geodatabase folder.

Spatial

Coordinate systems may be extracted from input feature data sources, may come predefined with FME, or may be user-defined. FME allows different output and input coordinate systems, and performs the required coordinate conversions when necessary.

How FME Processes Coordinate Systems in the Workspace

If a coordinate system is specified in both the source format and the workspace, the coordinate system in the workspace is used. The coordinate system specified in the source format is not used, and a warning is logged. If a source coordinate system is not specified in the workspace and the format or system does not store coordinate system information, then the coordinate system is not set for the features that are read.

If a destination coordinate system is set and the feature has been tagged with a coordinate system, then a coordinate system conversion is performed to put the feature into the destination system. This happens right before the feature enters into the writer.

If the destination coordinate system was not set, then the features are written out in their original coordinate system.

If a destination coordinate system is set, but the source coordinate system was not specified in the workspace or stored in the source format, then no conversion is performed. The features are simply tagged with the output system name before being written to the output dataset.

For systems that know their coordinate system, the Coordinate System field will display Read from Source and FME will read the coordinate system from the source dataset. For most other input sources, the field will display Unknown (which simply means that FME will use default values). In most cases, the default value is all you'll need to perform the translation.

You can always choose to override the defaults and choose a new coordinate system. Select More Coordinate Systems from the drop-down menu to open the Coordinate System Gallery.

Changing a Reprojection

To perform a reprojection, FME typically uses the CS-MAP reprojection engine, which includes definitions for thousands of coordinate systems, with a large variety of projections, datums, ellipsoids, and units. However, GIS applications have slightly different algorithms for reprojecting data between different coordinate systems. To ensure that the data FME writes matches exactly to your existing data, you can use the reprojection engine from a different application.

Note  To use this feature, you must have a supported GIS application installed on your system (for example, Esri ArcGIS®).

To change the reprojection engine, Select Workspace Parameters > Spatial > Reprojection Engine. In the example shown, you can select Esri (but the selection here depends on your installed applications):

For more information, see the links below:

Advanced

This parameter determines which version of Geodatabase should be created: 10.0 or Current (which is the default).

This parameter defines the type of compression to use on mosaic dataset overviews.

Values:

  • JPEG (default)
  • None
  • LZ77 – The only valid compression option for images with a colormap.
  • JPEG2000 – Available only on rasters with an 8-bit pixel depth and no colormap

The degree of lossiness caused by the compression. Valid values are integers from 0 (lowest quality) to 100 (highest quality).

This value is ignored when not using one of the JPEG compression types.

Determines the resampling type to be used when generating reduced resolution overviews on the destination mosaic dataset.

  • Nearest (Neighbor) (default) is the fastest but produces the poorest image quality.
  • Bilinear provides a reasonable intermediate option.
  • Bicubic is the slowest but produces the best image quality. This option can reduce performance when writing.

Specifies the number of levels of overviews build. A value of -1 will determine an optimal value.

More overviews enable better performance when viewing raster data using FME and Esri products.

This parameter tells the writer whether it should ignore features that would usually cause the translation to fail. This includes features that are topologically incorrect, are not supported by the writer, or conflict with the definition of the table to which it is to be inserted (that is, they are outside of the geometry envelope specified by the feature class).

The default setting is No, which means that failed features are not ignored and will cause the translation to fail when encountered.

Sets the number of features to ignore before causing a translation to fail due to a problematic feature. (However, the translation may still fail for other reasons.)

This parameter is only valid if Ignore Failed Features is set to Yes.

Values:

  • To ignore all failed features: -1
  • Otherwise: 0 or a positive integer