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• Description
• Release Information
• Features
• Enhancements
• Limitations
• System Requirements
• Point of Contact
• Planned Improvements
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DESCRIPTION

This free tool converts from STF to the CTDB (Compact Terrain Database) format, an optimized run-time format used by the ModSAF and OneSAF applications.

The user can partly lay out the mapping from SEDRIS objects to CTDB feature types using the EDCS-based features file that the application reads in to determine how to map STF to CTDB. Also, the user can specify if the CTDB should be gridded, tinned, or hybrid. If gridded or hybrid is selected, the user can specify a certain grid post spacing to be used in the CTDB, or allow the application to determine the optimal spacing.

RELEASE INFORMATION

The current release version of this application is 0.9.

This tool is compliant with the 3.1.2 release of SEDRIS technologies, and is based on:

SEDRIS SDK 3.1.2, which includes:
• EDCS SDK 3.0
• SRM SDK 3.1.2

The application is linked statically, and additional documentation is included in the download. You do not need to download or install the SEDRIS SDK to use this tool.

This application consists of the following components -

Statically bound executable:
- stf_to_ctdb (stf_to_ctdb.exe)
.
Default features file:
- features.rdr
.
Data files:
- data/coord.rdr
- data/attribution.rdr
- data/defaults.rdr
.
User manual:
- docs/user_manual.pdf
.
Changelog:
- docs/changelog.txt
.
Additional features file information:
- docs/features_file.txt
.
Sample features files:
- sample_features/features.rdr (duplicate of default features file)
- sample_features/features.rdr.empty

- S1000
- DTED
- VPF
- VERTS
- CTDB to STF produced STFs

FEATURES

• Creates gridded, tinned, or hybrid CTDB terrain from SEDRIS property grids or polygons.
• Creates SIMNET and single-cell GCS CTDB
• Creates more complex buildings than CTDB allows by breaking them into smaller pieces.
• Extracts and creates the following CTDB feature types:
• Treelines
• Roads & Rivers
• Buildings
• Tree Canopies
• Microterrain
• Microwater
• Soil Defrag Areas
• Powerlines
• Pipelines
• Railroads
• Uses JointSAF-provided CTDB back-end compiler.
• Default values - ability to specify default values for CTDB types when they aren't present in the STF transmittal.
• Features file - ability to map different EDCS code values to different CTDB types.

The following enhancements were added to the version 0.9 release:

• Multi-cell CTDB support added.
• Added -geotile_id command line option so user can specify geotile instead of cell ID.
• Area of interest command line option to generate CTDB based on extents specified. Changed from no_spatial_domain.
• Area of interest can now be specified in either UTM or Geodetic.
• Added political boundary abstract feature creation.
• Removed -use_mes_bridges option.
• Updated user manual.

LIMITATIONS

• Compiler only supports creation of CTDB Format 7 databases.
• Complex building support still has some problematic cases that lead to a faulty building being created, causing ModSAF/OTBSAF to stop drawing buildings at that point. Only known case of this happening is VERTS New York database. This will be remedied in a future release.
• No support for compilation of MES buildings.
• MES bridge support is not working at this time.
• CCTT basis sets are not handled.
• Feature Model Instances are not handled, with the exception of aggregate models consisting of only Point Feature tree features.
• Intra-cell topology for road/river networks is not currently being created for multi-cell GCS/GTRS CTDBs.
• Complier does not currently handle multiple environment roots in a single transmittal.

SYSTEM REQUIREMENTS

Hardware

• CPU - x86, sparc, or mips
• Memory - 256 MB or greater recommended
• Disk space - 20 MB for application installation

Software

• Operating system - Tested with SunOS 5.6, Irix 6.5, Redhat Linux 7.2, and Windows 2000
• Other dependencies - None

POINT OF CONTACT

Send email to help@sedris.org for questions or assistance in using this application.

As a minimum, please provide the following in your email:

• application name
• application version
• hardware architecture
• OS name and version
• detailed problem description

PLANNED IMPROVEMENTS

• MES support to be added.
• GUI interface:
• Features file configuration
• Transmittal information extraction
• Extensive help section
• CTDB tutorial
• Interactive updates from compiler
• User selection of CTDB features to be imported.
• Intra-cell topology support for multi-cell CTDBs.
• Full Feature_Model_Instance support.
• Support for multiple environment roots in a transmittal.

DOWNLOAD

PLATFORM	SIZE
Linux (RedHat 7.2)	5.5M
SGI 6.5	6.5M
Sun 5.6	5.5M
Win 98/Me/2k/NT	5.0M