Does anyone have one of those old NGS CDs of geodetic control laying around ? I need that little program that was used to search the CD for the control you wanted. I think it was called "dselect" or something like that? Anyway, I noticed that NGS is now posting zipped files each state, but we need a way of searching that whole file. I figured that little dselect program would do the trick.
Jim Frame, post: 399428, member: 10 wrote: Have you tried DSWorld?
no Jim. Does it do what dselect does / did ?
Downloading now from the link you posted. Thanks.
I still have several editions of those CDs, the latest is dated November 2001.
The Readme.txt file in one of the software directories on that CD has the following:
The National Geodetic Survey provides two Windows
programs for accessing NGS Digital Datasheet files
(a.k.a. DSDATA files)
Both programs were developed for the
Windows 2000/98/95/NT platform.
Program 'DSWIN' is used to find, extract, view,
and print NGS Digital Datasheets.
Program' DSFILES' is used to join and split
and NGS Digital Datasheets files.
The programs work on separate Datasheet files or in
conjunction with your NGS Datasheet CD-ROM.
Both programs have the capability of converting
your datasheets to a single records per station
delimited record format. (a.k.a DSSELECT format).
(Click HELP->GIS/DSSELECT)
If either of these programs would be of value to you, send me a message by the conversation feature and we will figure out a way to get them to you. Both executables are less than a MB each so it should not be too difficult.
GB
DSWorld gives you a lot of ways of searching and plotting datasheets. If the datasheet website search tools (search by PID, station name, radius) aren't sufficient, give DSWorld a try. DSWorld is also the tool preferred (and possibly now required) by NGS for submitting recovery notes.
You can also try DSWIN available for download via Tools link on NGS site. I take the liberty of copying the README.TXT file.
From http://geodesy.noaa.gov/PC_PROD/DSWIN/readme.txt
The National Geodetic Survey provides three Windows
programs for accessing NGS Digital Datasheet files
Datasheet files are hereafter referred to as DSDATA files.
All 3 programs were developed for the
Windows 2000/98/95/NT platform.
Program 'DSWIN' is used to find, extract, view,
and print NGS Digital Datasheets.
Program 'DSFILES' is used to join and split
NGS Digital Datasheets files.
Program 'DSUPDATE' is used to merge/replace
a newer DSDATA file in to an older DSDATA file
so that your file can be kept up-to-date.
The programs work on separate Datasheet files or in
conjunction with your NGS Datasheet CD-ROM.
NOTE - NGS no longer sells datasheets on CD, but
DSWIN and DSFILES still allow for reading
a CD if you have one.
TO EMULATE a CD on your Hard Drive...
1. Create directory called Data
with subdirectories for one or more states
i.e. DataMD
DataDE
DataWV
etc.
2. Go to www.ngs.noaa.gov/cgi-bin/ds_archive.prl
and download the Counties you need into
the appropriate State directory.
Also download the 'county.' file
to the appropriate State directory.
The 'count.' file is available via clicking
'Get Misc Files' on the web page.
NOTE - This file must be named 'county.md'
or county.
Your directory structure for MD should look like...
C:DataMD
md001.dat
md003.dat
county.md
3. Run DSWIN or DSFILES and click 'CD-ROM'
and click 'C' for the Drive letter.
4. The program should list the States found
under /Data. When you click on a state, it should
list the Counties found in /Data/MD/county.md
(or whatever State you choose).
Programs DSWIN and DSFILES both have the capability
for converting your datasheets to a single records per
station delimited record format. (a.k.a DSSELECT format).
(Click HELP->GIS/DSSELECT)
WHO TO CALL:
____________
Problem with the program or
Missing or incorrect data, Call:
National Geodetic Survey Information Branch
(301)713-3242
[email protected]
ALSO:
_____
Datasheets are available Free from the
National Geodetic Survey HomePage,
http://www.ngs.noaa.gov
I had written software that would enable a datasheet file to be searched and extract stations that meet certain criteria, but I haven't update it in years, dwworld does a lot of that.
Another way I use the data now is to download the monthly shape files by state, and then bring it in to global mapper and by "splitting" the file I can filter different attributes, like stability A or B, second order vertical or better, with 2011 position, etc.
John Hamilton, post: 399448, member: 640 wrote: Another way I use the data now is to download the monthly shape files by state, and then bring it in to global mapper and by "splitting" the file I can filter different attributes, like stability A or B, second order vertical or better, with 2011 position, etc.
I'm new to Global Mapper. How do you split/filter on attributes?
Alt-c, then right click the item you want to split, then pick SPLIT. In the newest version it is under LAYER on the right click menu
Thanks everyone for your responses and help. This question only came up because I am attempting to use one of these whole state zipped files. Since the days of those CDs went away and we have the ability to search on the NGS website, that is what I have been doing. Also I like this thing I can use in Google Earth too called, "NGSCS" ( http://www.metzgerwillard.us/EarthSurvey.html ).
Anyway, I have tried both DSWIN and DSWORLD on the zipped file for the state of Florida. It seems the file is too big for both of these. Trying to sort the index doesn't work and trying to list by H or V doesn't work. Could be me, but, I've tried a few things and I keep getting BMs listing in my sort trying to isolate H stations. Oh well.
John, I use global mapper too, but never thought to try that. Thanks -
I'm back home from Florida now and I'm turning the place upside down looking for one of those CDs from the late 90s. I just need "DSSELECT".
Try this
ftp://ftp.ngs.noaa.gov/pub/pcsoft/dsselect/
If Bill93's link does not work for you, I did find DSSELECT.EXE on a November 1999 CD. Later CDs did not have that program.
It shows a compile date of 18 November 1996 and is 265 kB.
Start a conversation if you need me to send it to you.
GB
Glenn Borkenhagen, post: 399563, member: 961 wrote: If Bill93's link does not work for you, I did find DSSELECT.EXE on a November 1999 CD. Later CDs did not have that program.
It shows a compile date of 18 November 1996 and is 265 kB.
Start a conversation if you need me to send it to you.
GB
Glenn, I was able to download it from the link Bill gave, but, it won't run on my 64 bit laptop : ( and I do not have a VM set up to run old stuff.
I guess I am pushing the limits of DSWIN and DSWORLD trying to use them on the huge zipped files of the whole state ?
When I get a chance, I will capture screen shots of what is happening and send them to NGS. Again, it could be just me, I don't know.
Basically, all I am trying o do is to isolate all BMs that are 2nd order or better, then, out of that selection, I am trying to isolate all those that have good H positions, classical or GPS.
WildT2, post: 399712, member: 530 wrote: trying o do is to isolate all BMs that are 2nd order or better, then, out of that selection, I am trying to isolate all those that have good H positions, classical or GPS.
I'd be very careful not to mix classical and GPS-derived positions on a project.
In my area, GEOCON conversion from classically derived position to NAD83(2011) is about a foot off of what I get with OPUS. This is reasonable considering that the nearest station with both classical and GPS data on the sheet is almost 40 miles away, a difference on the order of 1 in 200,000.
I suspected that the DSWIN program would not work given its creation date and the many changes to the datasheets. The version on the web page should be the most up-to-date. The failure to load may be a programming issue (who would have thought the files would get so big with the additional fields like local and network accuracies.
You can always contact the NGS Info Center and ask for help or request that the program be updated/fixed.
I have performed the type analysis you are attempting. The best tool in my opinion is to import the shape files into a GIS tool and use their robust sorting and display tools. A graphical view is also handy when planning logistics.
There are free shapefile viewers here: http://www.esri.com/software/arcgis/explorer
I have also used this tool: http://www.tatukgis.com/Products/EditorViewer.aspx
When I did this sort of analysis I had the full package. I do not know whether the fee viewers are up to he task.
At one time, I had suggested the NGS add additional fields to their shapefiles including geoid heights. They did not agree.
While I expect you are familiar with datasheet entries some individual examination is required. As an example, some heights retain their vertical order even though they may have modeled rather than adjusted current heights.
HTH,
DMM
Bill93, post: 399731, member: 87 wrote: I'd be very careful not to mix classical and GPS-derived positions on a project.
In my area, GEOCON conversion from classically derived position to NAD83(2011) is about a foot off of what I get with OPUS. This is reasonable considering that the nearest station with both classical and GPS data on the sheet is almost 40 miles away, a difference on the order of 1 in 200,000.
Thanks for the advice Bill. Yes, I know better than to mix and match adjustments and epochs, etc.
John Hamilton, post: 399448, member: 640 wrote: I had written software that would enable a datasheet file to be searched and extract stations that meet certain criteria, but I haven't update it in years, dwworld does a lot of that.
Another way I use the data now is to download the monthly shape files by state, and then bring it in to global mapper and by "splitting" the file I can filter different attributes, like stability A or B, second order vertical or better, with 2011 position, etc.
John,
I'm really glad you answered my post mentioning global mapper. This is just great. Thanks !
