Compressed ARC Digitized Raster Graphics (CADRG) Writer Feature Type Parameters

To access feature type parameters, click the gear icon on a feature type in the workspace. This opens the Feature Type Parameter Editor.

Tip  To always display the editor in FME Workbench, you can select View > Windows > Parameter Editor.

General

All feature types share similar General parameters, which may include Feature Type Name, Reader or Writer information, and Geometry.

In most Writer Feature Type parameter dialogs, you can also control Dynamic Schema Definitions. Some database formats accept Table or Index Qualifier prefixes on the output table feature type.

Important  These parameters apply only to a selected feature type, not to the entire writer. If a feature type parameter listed here conflicts with a writer-level parameter, then the writer parameter will be ignored and this feature type parameter will be used.

Data Series Code (Resolution)

A 4-byte ASCII character string coded to indicate the scale of the destination dataset.

Among all the format attributes, the Data Series Code (Resolution) is the most important. The data series code determines the scale, or resolution, of the destination dataset. According to MIL-STD-2411-1, there are 12 fixed scales and 6 various scales. The scales affect the resolution of the frame files in each zone.

When the source raster does not have the correct spacing, the CADRG writer must resample the raster.

If this attribute is not set or is set to Auto (case-insensitive), data series code value MM is implied.

Map Scale

This parameter specifies the map scale for Data Series Codes that support various scales. Specifying a value like 10000 corresponds to a scale of 1:10000.

Note  Any scale may be specified, but scales larger than 1:7800 (that is, where the value is < 7800) have the potential to result in duplicate frame names, where frames at different locations in the same zone end up with the same file name, and one frame overwrites the other.

If this parameter is unspecified, the CADRG writer will calculate scale based on the spacing of the input raster. This calculated scale will be bounded between 1:5000000 and 1:7800.

Interpolation Type

Rasters may need to be resampled to different sizes during writing. This option specifies how cell values should be interpolated:

  • Nearest Neighbor is the fastest but produces the poorest image quality.
  • Bilinear provides a reasonable balance of speed and quality.
  • Bicubic is the slowest but produces the best image quality.
  • Average 4 and Average 16 have a performance similar to Bilinear and are useful for numeric rasters such as DEMs.

Generate Color Tables

This option specifies the granularity at which color tables will be generated.

  • Per Zone means all frames within the same zone will share a color table. This can improve compatibility with other applications.
  • Per Frame means a unique color table will be generated for each frame. This can improve color accuracy, but may be incompatible with other applications.
  • Auto will choose Per Zone or Per Frame depending on the scale factor of the output. Specifically, if the scale factor is 1:250,000 or larger Per Frame will be selected. Otherwise, Per Zone will be selected.

TOC Security Country/International Code

A 2-byte ASCII character coded to indicate the originating country or international affiliation of the security classification of the table of contents file.

TOC Security Classification

A 1-byte ASCII character coded to indicate the security level of this file.

For example, U = unclassified, C = confidential, S = secret.

TOC Security Release Marking

A 2-byte ASCII character string coded to indicate any special handling or releasability restrictions assigned to the contents of the table of contents file.

TOC Boundary Rectangle Producer

A 5-byte ASCII encoded character string, identifying in human-readable form a designator for the organization that produced the frame files associated with this boundary rectangle record.

Enable Integration of TOC Files into NITF

CADRG files are usually physically formatted within National Imagery Transmission Format (NITF) messages. That is, the CADRG data is embedded inside an NITF file. This parameter specifies whether the writer should embed the TOC file in an NITF file.

For greatest compatibility, this parameter should be set to Yes. However, some applications may only be compatible with output generated when the options are set to No.

Group Frame Files

This option specifies how frame files are grouped into directories.

  • By Data Series will create a directory for each data series. For example:

/MM/0000B010.MM3

/MM/0000C010.MM3

/MM/0001A010.MM2

/MM/00019010.MM2

/MM/00024010.MM2

/MM/00025010.MM2

  • By Data Series and Zone will create a subdirectory per zone within each data series directory. For example:

/MM/3/0000B010.MM3

/MM/3/0000C010.MM3

/MM/2/0001A010.MM2

/MM/2/00019010.MM2

/MM/2/00024010.MM2

/MM/2/00025010.MM2

Selecting this option may improve compatibility with other applications.

Frame Security Country/International Code

A 2-byte ASCII character string coded to indicate the originating country or international affiliation of the security classification of the frame file. This is the same as TOC Security Country/International Code.

Frame Security Classification

A 1-byte ASCII character coded to indicate the security level of this file.

For example, U = unclassified, C = confidential, S = secret.

Frame Security Release Marking

A 2-byte ASCII character string coded to indicate any special handling or releasability restrictions assigned to the contents of this file.

Enable Integration of Frame Files into NITF

CADRG files are usually physically formatted within NITF messages. That is, the CADRG data is embedded inside an NITF file. This parameter specifies whether the writer should embed the frame file in an NITF file.

For greatest compatibility, this parameter should be set to Yes. However, some applications may only be compatible with output generated when the options are set to No.