Feature Representation

In addition to the generic FME feature attributes that FME Workbench adds to all features (see About Feature 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.