June 2005
Beginner to intermediate
372 pages
10h 1m
English
Content preview from Web Mapping IllustratedBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.
Name
Spatial Data Transfer Standard Files (SDTS)
Synopsis
This is a U.S. Geological Survey (USGS) format. SDTS has a raster and a vector format. The raster format isn't supported in MapServer; only the vector formats are supported, including VTP and DLG files.
File listing
SDTS files are often organized into state-sized pieces; for example, all pf the state of Maryland, U.S.A.
Files are also available for multiple types of features including hydrography, transportation, and administrative boundaries.
This example uses transportation data, which consists of 35 separate files, each with the suffix DDF.
MDTRAHDR.DDF MDTRARRF.DDF MDTRCATS.DDF
MDTRDQCG.DDF MDTRFF01.DDF MDTRLE02.DDF
MDTRNA03.DDF MDTRNO03.DDF MDTRSPDM.DDF
MDTRAMTF.DDF MDTRBFPS.DDF MDTRCATX.DDF
MDTRDQHL.DDF MDTRIDEN.DDF MDTRLE03.DDF
MDTRNE03.DDF MDTRPC01.DDF MDTRSTAT.DDF
MDTRARDF.DDF MDTRBMTA.DDF MDTRDDSH.DDF
MDTRDQLC.DDF MDTRIREF.DDF MDTRNA01.DDF
MDTRNO01.DDF MDTRPC02.DDF MDTRXREF.DDF
MDTRARDM.DDF MDTRCATD.DDF MDTRDQAA.DDF
MDTRDQPA.DDF MDTRLE01.DDF MDTRNA02.DDF
MDTRNO02.DDF MDTRPC03.DDFData access/connection method
SDTS access is available in MapServer through OGR.
The
CONNECTIONTYPE OGRparameter must be used.The path to the catalog file (????CATD.DDF) is required, including file extension.
There are multiple layers in the SDTS catalog, some of which are only attributes and have no geometries.
ogrinfo examples
Here's an example that uses ogrinfo on a catalog file (note that the
first seven layers don't have geometries):
>ogrinfo ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access
More than 5,000 organizations count on O’Reilly
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.