Feature Type Name
- From File Name(s): Generates one feature type per source filename. If this mode is selected, each raster of the MRF will be read, including individual pyramid levels. For example, an MRF with 5 levels and 7 pyramid levels will output 35 features.
- From Format Name: Produces only a single feature type containing the format name. If this mode is selected, each raster of the MRF will be read, including individual pyramid levels. For example, an MRF with 5 levels and 7 pyramid levels will output 35 features.
- From Subdataset Name(s): Generates one feature type per subdataset in the MRF. An MRF will have one subdataset for each Z-Slice and Pyramid level combination. For example, an MRF with 10 Z-Slices and 6 pyramid layers will have 60 subdatasets.
- From File Name(s) and Subdataset Name(s): FeatureType names match the above but with the prefix [rootFileName]_.
Z-Slices to Read
An MRF is composed of an arbitrary number of three-dimensional layers, referred to as Z-Slices, which are additional rasters of the same size and number of bands that are stored in the same data file. Each of these rasters also has its own Pyramid Levels.
Use this parameter to specify which Z-Slices to read. For example, Z0 or YourFile_Z0 means that the reader will read from Z-Slice 0.
- If Feature Type Name(s) is set to From File Name(s), or From Format Name, the only option is to read the entire MRF dataset.
- If Feature Type Name(s) is set to Subdataset Name(s), or File Name(s) and Subdataset Name(s)
Pyramid Level to Read
Use this parameter to specify which pyramid level to read. This pyramid level will be read at each Z-Slice specified in the Table List (when applicable). Specifying a value of 3 will read pyramid level 3 from all of the Z-Slices specified in TableList
The Pyramid Levels are progressively less resolute versions of the base level. Pyramid Level 0 refers to the original image stored at a given Z-Slice, and does not contribute to the total number of pyramid levels contained in an MRF.
For example, if an MRF has 10 Z-Slices and 5 pyramid levels, the MRF is a datafile that stores 10 x 6 individual rasters.
Schema Attributes
Additional Attributes to Expose
Use this parameter to expose Format Attributes in Workbench when you create a workspace:
- In a dynamic scenario, it means these attributes can be passed to the output dataset at runtime.
- In a non-dynamic scenario, you can use this parameter to expose additional attributes on multiple feature types.
Use Search Envelope
Using the minimum and maximum x and y parameters, define a bounding box that will be used to filter the input features. Only features that intersect with the bounding box are returned.
If all four coordinates of the search envelope are specified as 0, the search envelope will be disabled.
Clip to Search Envelope
When selected, this parameter removes any portions of imported features being read that are outside the Search Envelope.
The example below illustrates the results of the Search Envelope when Clip to Search Envelope is not selected (set to No) and when it is selected (set to Yes).
- No: Any features that cross the search envelope boundary will be read, including the portion that lies outside of the boundary.
- Yes: Any features that cross the search envelope boundary will be clipped at the boundary, and only the portion that lies inside the boundary will be read. The underlying function for the Clip to Search Envelope function is an intersection; however, when Clip to Search Envelope is selected, a clipping operation is also performed in addition to the intersection.
Advanced
Pyramid Level to Read
This parameter specifies the pyramid level from which to read.
Pyramid level 0 represent the original raster data. Values greater than 0 represent increasingly reduced levels of image resolution.
Each pyramid level has half the number of rows and columns of the previous level.