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- this is the sdts translation tools faq.
-
- this contains the answers to frequently asked questions. there is a
- seperate faq for sdts/dem files. see dem/SDTSDEM.faq (in a parallel
- directory )
- also see sdts.txt in this directory
-
- you can reach me at skatz@blm.gov
- or by phone (303)-236-0101
-
- sol--
-
- 1. the BASE NAME is the first 4 characters of all the files ending in .DDF
-
- 2. the Layer ID is the 2 NUMERIC digits in position 7 and 8
- of several .DDF files. usually there is only one O1 .
-
- look for the xxxxLE##.DDF file to identify the vector line data
-
- occasionally you will find additional layers, eg 02 , 03 etc
- these will each require a separate run of the program. be sure
- you use a different output file name, otherwise you will overwrite
- the previous output file.
-
- the equivilent for the SDTS/DEM files appears to be the characters L0
- (EL ZERO) found in the xxxxCEL0.DDF file. if you find a file like this
- in your directory, the SDTS/DLG programs in this (SDTS/DLG) directory
- will NOT work, and may NOT give you an error message. As I work on the
- programs, I'll be adding error check for this problem. The current
- versions of sdts2dlg and sdts2dxf have been fixed.
-
-
- 3. to run most of these programs you MUST be in a DOS window and in the
- directory where the data is stored
-
- a - the program must either be in the same directory as the data,
- b - or the program must be in the path so that it will be found
- when you type the name on the command line
- c - or you enter the complete path to the program on DOS the command line.
-
- WARNING: if you run the program from the WINDOWS command line, please
- don't call me with problems. i am getting tired of telling folks
- that it has problems working that way :-)
-
- on the other hand, i got this email message from
- Sean Montague <couloir@rocketmail.com>, July 8, 1998
- He was using SDTS2DEM but it may relate to DLG files.
-
- I just ran your program in both dos mode and I double
- clicked on the application file in explorer from
- which a dos window appeared. In dos mode it took
- approximately 20 minutes to convert, from the dos
- window it took 30 seconds. I'm using a 233 mhz
- computer. It seems strange that the program runs
- faster using explorer. After I converted each dem
- into a grid, I did the same dem twice, they seem to
- be exactly the same. Do you know of any problems
- with using you program through explorer. I would
- appreciate any comment on this.
-
- I too would like some comment on this. If you have Win95
- or WinNT, could you try it and let me know what happens. sol--
-
-
-
- 4. other translator programs are referenced on
- http://www.avenza.com/link2trans.html
-
- 5. no, i don't have any other sdts translator programs, what you see
- in this directory or parallel directories is what i have.
-
- 6. yes, sdts2dlg.exe and dlgbld.exe work under windows 95.
- be sure you have dosxmsf.exe in the path, or in the directory.
- also see FAQ 3.
-
- there is a problem running blddlg.exe on a NT computer.
-
-
- 7. the message "Can't find xxxxNE01.DDF" means that there isn't a point
- file in this dataset. it is just a informational message.
-
- 8. the dos programs have problems with the large hypsography data sets. often
- crashing. Nick Ullman has been kind enough to compile some of these program
- on a windows 95 machine using visual c ver. 5. you can find these programs
- in sdtsvc.zip this is the solution recommended by the usgs sdts team. you
- can read their message in hypso_bug.txt file, in this directory.
-
- 9. if you got the data from the usgs/sdts site and it still has a
- tar.gz extension, you must first gunzip the file and then untar the
- file. winzip will do this for you. or you can get the dos utilities
- gunzip.exe and tar.exe by doing a web search. all the programs here work
- with files ending with .DDF
-
-
- 10. there is a file explaining how to connect the attributes in the .DDF files
- to the major and minor code in the output of sdts2dlg. although it is
- specifically written for arcview, it is useful for anyone working with
- SDTS/DLG files,
-
- see sdts_av.txt
-
-
- also see the work on processing SDTS/DLGs into ArcView by
- Deb Southworth, deb_southworth@mail.fws.gov
-
- http://www.fws.gov/data/gisconv/sdtsovr.html
-
-
- 11. Most of the programs will run with the required information on the command
- line. if anything is missing from the command line, it will start
- prompting for the missing information. This means you can set up a batch
- file and convert many files without having to wait to answer prompts.
-
-