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	SDTS (Site not responding. Last check: 2007-08-30)
		SDTS is a new USGS format that supposed to incorporate and obsolete older formats, including elevation data (DEM) and vector data (TIGER and DLG)
		GDAL also supports SDTS and i've found it to be most portable and easiest to use
		SDTS++ is a C++ toolkit that developers can use to write applications that can read and write SDTS datasets
	www.vterrain.org /Culture/SDTS.html (177 words)

	v.in.sdts
		SDTS and the Topological Vector Profile define two basic types of spatial objects: simple spatial objects, i.e., lines, polygons, nodes, etc.; and composite objects, which are made up of one or more other simple and/or composite spatial objects.
		SDTS distinguishes between two basic kinds of attributes: primary attributes are related directly to spatial objects (simple or composite), while secondary attributes are related to primary or to other secondary attributes.
		The schema of an SDTS dataset--the number and kind of attribute fields and attribute tables, and the relationships among attributes and objects--is not predefined by the Standard or the Profile, but is determined by the producer of the dataset.
	grass.itc.it /gdp/html_grass5/html/v.in.sdts.html (1338 words)

	What is SDTS?
		The purpose of the SDTS is to promote and facilitate the transfer of digital spatial data between dissimilar computer systems, while preserving information meaning and minimizing the need for information external to the transfer.
		Implementation of SDTS is of significant interest to users and producers of digital spatial data because of the potential for increased access to and sharing of spatial data, the reduction of information loss in data exchange, the elimination of the duplication of data acquisition, and the increase in the quality and integrity of spatial data.
		SDTS is available for use by state and local governments, the private sector, and research and academic organizations.
	mcmcweb.er.usgs.gov /sdts/whatsdts.html (535 words)

	Spatial Data Transfer Standard (SDTS)
		SDTS also allows these simple objects to be aggregated into aggregate objects predefined by the standard (such as graph, layer, or grid) or defined by the user of the standard.
		SDTS defines the meanings of fields and subfields, their tags and labels, their data structure, and options for data type and format (often there is a choice of data type and format.) Tags identify the fields and provide the means of linking data with its description within an ISO 8211 file.
		SDTS is intended to be an exchange standard between different formats used by different spatial data systems and a distribution format for spatial data products.
	ssdoo.gsfc.nasa.gov /nost/formats/sdts.html (1463 words)

	Skills for Logistics (Site not responding. Last check: 2007-08-30)
		SDTS enables a haulage or any other company holding an Operators Licence (‘O’ Licence) to identify a person aged 21 or over, who will receive first-class training to obtain a Category C driving licence or upgrade to a Category C+E driving licence and then go on to obtain an industry specific, nationally recognised qualification.
		The SDTS is managed by Skills for Logistics on behalf of the Scottish Road Haulage Modernisation Fund.
		This is primarily the employers responsibility, however, the ATO is accountable to the Skills for Logistics who may undertake periodic checks to ensure that the rules of the SDTS are adhered to.
	www.skillsforlogistics.org /sdts.shtml (491 words)

	Spatial Data Transfer Standard (SDTS) FAQ
		SDTS is a FIPS(173) and FGDC (STD-002) standard that defines a non-proprietary format for packaging vector or raster spatial data with attributes, metadata, a data quality report and usually a data dictionary.
		SDTS transfers are the data sets used to exchange spatial data between different computer systems.
		SDTS calls this a "foreign identifier." Foreign identifier fields permit one module record to reference another module record (in the same or another module) in the transfer.
	helios.er.usgs.gov /sdts/sdtsfaq.html (4309 words)

	Spatial Data Transfer Standard Part 6
		An SDTS profile, in general terms, is defined as a limited subset of the Spatial Data Transfer Standard, designed for use with a specific type of data.
		SDTS Point Profile module names (the unique name of each individual module) shall be standardized and consist of four characters.
		SDTS Point Profile file names, to be consistent from the various agencies shall consist of eight characters of base name.
	www.ngs.noaa.gov /FGCS/tech_pub/sdtsp.html (8635 words)

	USGS SDTS File Loader
		If only one SDTS dataset is going to be used in a scene, the default values displayed in the Image's fl point elevation and Image's white point elevation requester fields will be the correct settings for the best image display possible.
		In addition, if the SDTS dataset contains invalid height values (usually around the outside border of the quadrangle), the user is informed of this, and is allowed to choose the height value that will be used anytime an invalid elevation is encountered.
		The SDTS loader will assist in keeping track of the overall minimum and maximum, because it will remember the min and max values from the previous SDTS datasets that were loaded.
	amber.rc.arizona.edu /lw/SDTS.html (1023 words)

	PullSDTS home page
		The data started as four 10m SDTS new DEMs that were exported from PullSDTS 2.0 beta 2c as 8-bit RAW files (all equalized to the mountain's elevation range of 4,000 to 8,215 ft.).
		Where to get USGS SDTS DEMs: They were once available free from a USGS government site, but that distribution function was transferred in mid-2001 to GIS Data Depot which, as a commercial site, offers both free files and, for a small fee, broader and faster access.
		While only a relatively few SDTS DEMs have yet been tested, this feature has been tried and found to work with new and old 10m and 30m DEMs, including old 30m Level 1, and including elevation data in feet or whole or decimal meters.
	www.3dartist.com /WP/pullsdts (4649 words)

	USGS (U.S. Geological Survey) EROS, Sioux Falls, SD
		SDTS DLGs require the use of either the uncompressed SDTS Master Data Dictionary file as a single tar file for 1:2M, 100K,
		SDTS DLGs require the use of either the uncompressed SDTS Master Data Dictionary file as a single tar file or a series of uncompressed small files.
		The decision to provide SDTS DEMs through commercial vendors is consistent with the USGS goal of making more public domain data available at no charge while enabling the private sector to have a greater role in the distribution of USGS data.
	edc.usgs.gov /geodata (858 words)

	Uploadable Maps
		The first two types are the SDTS DLG and the DLG-O. SDTS stands for Spatial Data Transfer Standard, or something like that.
		It is the most commonly available format of free vector data for the U.S. The USGS in an effort to encourage the use of SDTS, has made data for nearly the entire country, available for free.
		SDTS file conversion is accomplished by running sdts2mif.exe.
	www.gpsnuts.com /Ozi/OziMCJohnG/vector.html (3199 words)

	SDTS Notes
		It allows SDTS transfers to be inspected and to have DEM data extracted without the user having to open the usual tar.gz archive.
		This page also links to the 1991 SDTS standard (FIPS PUB 173) documents, which are outdated but I found sometimes easier to read and generally more useful for understanding the data structures in writing new SDTS parsing code.
		Finally, if you would like to see an informal history of the SDTS standard and the circumstances under which it came about, the following may be of interest: www.socsci.umn.edu/~bongman/gisoc99/poore.htm.
	www.3dartist.com /WP/sdts/sdtsnotes.htm (4581 words)

	PARTA-Campus Bus Service SDTS (Site not responding. Last check: 2007-08-30)
		All riders (temporary and permanent) of SDTS must be approved to ride through the Kent State University Student Disability Services (SDS) office.
		All approved SDTS passengers should fill out an SDTS Schedule Form (clicking here will take you to the PDF version), which you can also fill out online (html version of form that is emailed to us).
		Call the SDTS line and the call will be transferred to the appropriate person.
	www.partaonline.org /SDTS.html (806 words)

	SDTS (Site not responding. Last check: 2007-08-30)
		To select an SDTS transfer, the name of the catalog file should be used.
		SDTS coordinate system information is properly supported for most coordinate systems defined in SDTS.
		SDTS Abstraction Library: The base library used to implement this driver.
	www.remotesensing.org /gdal/ogr/drv_sdts.html (141 words)

	SDTS DEM and ArcView GIS in Watershed Modeling System (WMS)
		USGS 7.5-minute DEMs in SDTS format can be downloaded off the web from the USGS GeoData home page.
		After downloading the SDTS files to your hard drive, create a single directory on your hard drive for each of your SDTS files.
		Final note— some SDTS grids are in feet, some are in meters.
	www.bossintl.com /html/sdts_grid.html (718 words)

	SDTS on GRASS (Site not responding. Last check: 2007-08-30)
		The sdts import provided in GRASS most likely can't deal with compressed raster data: the raster sdts format was only recently introduced, and companies like ESRI are still working on incorporating such importers into their expensive GIS.
		My understanding of the USGS maps is that the new format is SDTS, and I found the sdts modules in the 4.2.1 binaries for Linux.
		My understanding is that the SDTS is the USGS newest standard and it seems that there should be lots of interest in it in the grass world.
	grass.itc.it /pipermail/grassuser/1999-July/002217.html (328 words)

	SDTS The Spatial Data Transfer standard GIS format
		Purpose of SDTS -- The purpose of the SDTS is to promote and facilitate the transfer of digital spatial data between dissimilar computer systems, while preserving information meaning and minimizing the need for information external to the transfer.
		Slaying the SDTS Dragon - Covered on these pages are a number of notes on taking SDTS format data and converting it to a format that can be more easily used in GIS software.
		NGDC SDTS in Brief - NOAA's National Geophysical Data Center (NGDC) and National Geodetic Survey (NGS) are cooperatively developing procedures to port certain NOAA geospatial data into SDTS-compliant format with the goal of making SDTS easier to use.
	data.geocomm.com /sdts (1174 words)

	USGS SDTS format Digital Elevation Model data (DEM)
		SDTS Translators - a number of free downloads and utilities.
		SDTS News Updates - The USGS provides regular updates and useful resources to help you work with SDTS data.
		SDTS DEM to ArcView Conversion - SDTS Grid Import extension to ArcView imports SDTS grid data (DEM's) directly into ArcView in one step, all within the ArcView interface.
	data.geocomm.com /dem (1200 words)

	Hands-on Exercise: Spatial Data Transfer Standard (SDTS) (Site not responding. Last check: 2007-08-30)
		This does not mean that MGE cannot export data to SDTS.
		There are several steps involved and we will not be able to do the exporting within the time limit during the exercise.
		SDTS data set can only be generated if original data has map projection.
	www.urban.uiuc.edu /CE/00events/GisStandards/3B2-Handon-ex.htm (1503 words)

	Spatial Data Transfer Standard (SDTS), Fact Sheet 077-99 (May 1999)
		Advantages of the SDTS include data and cost sharing, flexibility, and improved quality information and metadata, all with the potential for no loss of information during transfer.
		The SDTS serves as the spatial data transfer mechanism for all federal agencies and is available for use by State and local governments, the private sector, and research and academic organizations.
		The most effective way to use the SDTS is to first define a profile; encoding and decoding software can then be designed to handle only the options in the profile.
	erg.usgs.gov /isb/pubs/factsheets/fs07799.html (1014 words)

	Converting SDTS Dem Data from ArcUser magazine
		Large-scale (1:24,000) SDTS data comes in two distinct types—DLG vector data and DEM grid models.
		The model for using the SDTS DEM described here primarily uses data found the 7.5' Moab, Utah, quadrangle that was downloaded from the EROS site.
		Loading SDTS DEM data into ArcView GIS requires unzipping the TAR file and converting it to a UTM NAD27 DEM.
	www.esri.com /news/arcuser/0799/webdata6.html (1666 words)

	USGS & GTOPO30 DEM Geometry Import Converter
		A SDTS dataset normally consists of 18.ddf files which make up the spatial data transfer, rather than a single.dem file.
		The SDTS file format is very different than those supported in this DEM importer.
		To import SDTS files into this DEM importer you will have to use a common public domain converter called SDTS2DEM.EXE to convert the 18.DDF SDTS files into a single USGS DEM file.
	www.okino.com /conv/imp_dem.htm (2548 words)

	SDTS Vector Profile
		The SDTS implementation of the entity-attribute-attribute value feature model provides a means of directly assigning attribute values to specific feature objects.
		The module may be contained in an external SDTS data dictionary as described in Annex A. (2) - A maximum of one module is recommended.
		When only a single SDTS transfer is on a media volume, then the volume name shall begin with the same four characters as the first four characters of file names for that transfer (see section 6.5.
	www.knology.net /~darrell_schmidt/vp/vp_content.html (8070 words)

	Grid Utility for ArcView GIS
		This stand-alone utility converts Spatial Data Transfer Standard (SDTS) format digital elevation model (DEM) data directly to the ESRI GRID format for use with ArcView Spatial Analyst or ArcView 3D Analyst.
		The SDTS DEM Raster to Grid conversion utility will be used to convert 1:24,000 scale data that references the Moab and adjoining Rill Creek areas of Utah.
		The Raster to Grid conversion utility that comes with ArcView GIS 3.2 will convert USGS 7.5-minute SDTS DEM data directly into an ESRI GRID format file that can be loaded into ArcView Spatial Analyst or ArcView 3D Analyst and used to create very striking digital terrain models.
	www.esri.com /news/arcuser/0100/webdata8.html (1331 words)

	SDTS Public Domain Software
		Please do not send questions regarding this software to the SDTS Task Force; instead, please direct questions to the individual or company listed.
		SDTS DEM to ArcView Grid Conversion utility enables importing of SDTS format grid (DEM) data directly into ArcView in one step, all within the ArcView interface.
		SDTS DEMs, ArcView and Spatial Analyst are needed to use this utility.
	helios.er.usgs.gov /sdts/public_domain.html (614 words)

	Spatial Data Transfer Standard (SDTS) (Draft) (Site not responding. Last check: 2007-08-30)
		The U.S. Geological Survey, has taken the lead in converting its digital cartographic data holdings to SDTS format.
		The purpose of the SDTS is to promote and facilitate the transfer of digital spatial
		SDTS i s of significant interest to users and producers of digital spatial data because
	tiwrm.hpcc.nectec.or.th /SURVEY/MIT/SDTS.html (321 words)

	USGS: SDTS data access (Site not responding. Last check: 2007-08-30)
		USGS data are made available free to the public domain through the GIS Data Depot website.
		You are now ready to translate the SDTS data into a DEM readable by ArcView Spatial Analyst.
		To run the utility, double-click on the file SDTS2DEM.exe (This is when you'll need the first 4 characters of the SDTS file names.) The utility runs in a DOS window.
	www.brocku.ca /maplibrary/procedures/USGS_SDTS.htm (1221 words)

	sdts2dem: a Translator for SDTS DEM Files
		While previous DEM files could be read by relatively simple programs, SDTS file are difficult to read even with the help of a large external library (which may or may not be available in the language of choice).
		In the summer of 2001, changes in the use of SDTS format by the USGS improved the data quality but rendered the sdts2dem program nearly useless.
		In the summer of 2001, the USGS suddenly halted its free distribution of SDTS DEM files via FTP.
	www.cs.arizona.edu /topovista/sdts2dem (509 words)

	GIS - U.S. Fish and Wildlife Service
		Covered on these pages are a number of notes on taking SDTS format data and converting it to a format that can be more easily used in GIS software.
		There are many associated files in SDTS data, and the import maintains many separate files; therefore quite a bit of knowledge concerning the SDTS format is needed to make sense of the imported files.
		Arc/Info AML to import SDTS data and automatically link attribute information - from the USGS SDTS task force in Rolla, MO This aml utilizes the Arc/Info sdtsimport command and makes the conversion much simpler.
	www.fws.gov /data/gisconv/sdtsovr.html (567 words)

	Retrieving and Unpacking SDTS Data
		Compliance with SDTS, also known as FIPS 173, is now mandatory for all
		The SDTS is a standard for data transfer, as opposed to a standard for data processing.
		Each SDTS transfer is required to have a data dictionary, specific to that particular transfer's
	www-sul.stanford.edu /depts/gis/sdts_tutorial.html (3335 words)

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