ER Mapper ECW Feature Representation

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

ECW features specify a matrix of x, y, and z coordinates. For each raster, there will only be a single feature returned.

Attribute Name

Contents

ecw_type

This will always be ecw_raster.

ecw_compression_level

This sets the quality of the compression. The range of the value is from 0 (best quality) to 99 (worst quality). The default value is 75. This is a writer attribute.

ecw_pyramid_num_levels The number of generated pyramid levels. Note that this does not include the original raster data.

ecw_pyramid_level{}.num_rows

ecw_pyramid_level{}.num_columns

The number of rows and columns in each pyramid level.

Pyramid level 0: Original raster data.

Pyramid level 1: First reduced-resolution pyramid level.

ecw_tab_file_generation

Enables or disables the generation of a TAB file along with the output ECW image. The value can be yes or no. The default value is yes. This is a writer attribute.