Feature Representation

In addition to the generic FME feature attributes that FME Workbench adds to all features (see About Feature Type Attributes), this format adds the format-specific attributes described in this topic.

Each Hyperion (HDF4) image data subdataset corresponds to a single feature in FME..

Attribute Name	Contents
hdf4_hyperion_type	This will always be hdf4_raster.
hdf4_hyperion_imagestarttime	The starting date and time of image collection.
hdf4_hyperion_dark_offset_method_ [trended_\|_predark_\|_postdark]	The dark offset method.
hdf4_hyperion_swir_scaling_factor	The SWIR scaling factor used.
hdf4_hyperion_number_of_cross_track_ pixels	The number of columns in the raster image. Fixed at 256.
hdf4_hyperion_file_type	The type of file generated (ie pre-image dark calibration, image, post-image dark calibration, lamp calibration, post-lamp dark calibration).
hdf4_hyperion_level0_pre-dark_filename	The filename for the level 0 pre-dark calibration.
hdf4_hyperion_frame_number_range	The data file frame number range.
hdf4_hyperion_number_of_along_track_ pixels	The number of rows in the raster image.
hdf4_hyperion_vnir_scaling_factor	The VNIR scaling factor used.
hdf4_hyperion_file_byte_order	The endianness in which the data is stored.
hdf4_hyperion_calibration_parameter_ file	The name of the calibration parameter file used to generate the L1R data.
hdf4_hyperion_echoratiofile	The name of the echoratio file used to generate the L1R data.
hdf4_hyperion_time_of_l1_file_ generation	The time and date of L1 file generation.
hdf4_hyperion_scene_id	The scene id.
hdf4_hyperion_number_of_bands	The number of bands in the raster image. Fixed at 242.
hdf4_hyperion_level0_image_filename	The name of the level 0 image filename.
hdf4_hyperion_level0_post-dark_filename	The name of the level 0 post-dark filename.
hdf4_hyperion_data_units	The data units.
hdf4_hyperion_l1_file_generated_by	The version of the level 1 processing code used to process the data file.
hdf4_hyperion_subdataset_name	When this is present on a feature, the feature is a subdataset. This attribute shows the name of the subdataset.
hdf4_hyperion_subdataset_description	When this is present on a feature, the feature is a subdataset. This attribute gives a description of the subdataset.