Page 1 of 3 123 LastLast
Results 1 to 10 of 93

Thread: So what are the current sources for DEM now?

Hybrid View

Previous Post Previous Post   Next Post Next Post
  1. #1
    Join Date
    Aug 2007
    Location
    Carolina's
    Posts
    2,760

    Default So what are the current sources for DEM now?

    With the back door now closed and the National Map Viewer not working anymore, What is the option for the DEM we use in Demex? Seems most DEM is now payware?

    Most of the old favorites do not seem to be of any use these days.

    http://seamless.usgs.gov/

    http://www.gisdatadepot.com

    http://www.mapmart.com

    Who has what DEM stored?

    Robert
    Last edited by NW 2156; 07-23-2015 at 08:31 PM.

  2. #2

    Default

    If you frequebt Elvas there is a DEM related thread in the route design forum.

  3. #3
    Join Date
    Nov 1999
    Location
    Jacksonville,, FL, USA.
    Posts
    3,820

    Default

    I frequent ElvasTower but the mentioned thread is pretty nebulous. It basically confirms that USGS is no longer working
    with DEMEX but they do recommend a open source program to convert other types of data that can be obtained from
    USGS and converted to the geotiff format required by DEMEX. I hope the OpenRails folks are noticing this as well and
    perhaps down the road, they will incorporate terrain extraction into their future editor.

    Meanwhile, the recommended program is QGIS which is available from www.QGIS.org which appears to be in Europe
    but which has English on the website. It is a large download but went pretty quickly. I downloaded the 64bit version
    which is abut 350Mbt for the installer. I have not installed it yet.

    I have DEM data (seamless) for more than the routes I will likely ever do (I'm 76) which includes better versions of
    the KP and BR Subs. of CSX, the Big Sandy south are of C&O, EK division of the L&N(CSX), Camas Prairie, Milwaukee
    Road northern Montana line and 2nd Sub. of the Coast Div. These have all be extracted and backed up on DVDs.

    J. H. Sullivan

  4. #4

    Default

    Jerry, we've been talking about different options for terrain import for a while on the dev team. We'd love to talk to John Stanford and see if he had any interest in donating the source code for Demex to the project, but since he's still getting income from it, my guess is he wouldn't be too inclined to part with that income stream just yet.

    As for what's archived... I know that a few of us did mad dashes on the USGS site when the first hints came out that it was going away.

    Somewhere, I have an app that would read a directory full of DEM to create a KML image of what's there and what isn't...
    Last edited by eolesen; 07-24-2015 at 06:20 PM.

  5. #5
    Join Date
    Sep 2006
    Location
    .
    Posts
    2,452

    Default

    Well, if the program's ability to download data is indeed at the bumper post, so would his income stream be, too.

  6. #6

    Default

    I'm not convinced it's a done deal. I've been emailing USGS with screenshots of the error, and they've responded. Let's see if they act.

  7. #7
    Join Date
    May 2010
    Location
    Cottage Grove, OR
    Posts
    75

    Default Looking for a "nice" solution...

    I have been on the "hunt" for a simple way to acquire DEMs that DEMEX can use for some time now. In reading the posts here, it seems that there still isn't a "nice" way of doing it. If anyone is currently accessing and converting hi-res data for DEMEX, please let me know. I am the chap who's creating the Siskiyou Route... http://www.siskurail.org . I started creating routes using MSTS many... many years ago. One thing that I would be willing to do is to create a Library of DEM files (the ones we used to download and use) on my website for all to access. I still have many DEMs for Oregon, Washington, Idaho, and Montana. Do any of you still have files that you could contribute to a Library? I'd like to know what you all think the real solution to this situation is. Thus far I am trying to access DEMs at http://viewer.nationalmap.gov/basic/ but figuring it out seems to be at a dead end. I did download and install VTBuilder the other day, but getting things on my site done has kept me from looking at the program.
    "FREE is a very good price!"

  8. #8
    Join Date
    Apr 2007
    Location
    Swindon, England
    Posts
    5,217

    Default

    This site may be of use:

    http://rmw.recordist.com/

    Though be warned it does tend to have limited bandwidth so more often than not it will be "down" when you try and use it.
    Vern.

  9. #9
    Join Date
    Mar 2008
    Location
    Ohio USA
    Posts
    687

    Default

    Quote Originally Posted by dmrick View Post
    I have been on the "hunt" for a simple way to acquire DEMs that DEMEX can use for some time now. In reading the posts here, it seems that there still isn't a "nice" way of doing it. If anyone is currently accessing and converting hi-res data for DEMEX, please let me know. I am the chap who's creating the Siskiyou Route... http://www.siskurail.org . I started creating routes using MSTS many... many years ago. One thing that I would be willing to do is to create a Library of DEM files (the ones we used to download and use) on my website for all to access. I still have many DEMs for Oregon, Washington, Idaho, and Montana. Do any of you still have files that you could contribute to a Library? I'd like to know what you all think the real solution to this situation is. Thus far I am trying to access DEMs at http://viewer.nationalmap.gov/basic/ but figuring it out seems to be at a dead end. I did download and install VTBuilder the other day, but getting things on my site done has kept me from looking at the program.
    I would have to look at some of my old hard drives when I can get access to them. I know I had some of Ohio stored somewhere when I did my personal route project.
    M. Payne

  10. #10
    Join Date
    Nov 1999
    Location
    Jacksonville,, FL, USA.
    Posts
    3,820

    Default

    Eolesen,

    I don't know how you would get in touch with John, but I doubt he is getting much, if any, income from the program now.
    Besides, if I am not wrong, he is an officer with one of the larger railroads in the Midwest, BNSF I believe. In any case he
    has always answered questions put to him, most recently concerning how to load DEMEX on a Win-7 machine which I
    followed and voila it worked. Of course I have a user license for DEMEX that I paid for at least 10 years ago.

    The fellow that created "Jumper" is another possible contact. He has moved on to creating similar extraction software
    like DEMEX for Railworks.

    When I heard it might go away, I too downloaded all I could think I might ever use and I have it stored away on DVDs
    which while not the most stable medium, they will probably "outlive" me. In addition to my earlier comments, I have
    data for the CSX "J" line and all of it's branches, the western end of the Southern "S" line, the CSX "H" line, and a few
    other odds and ends. Most recently I got the data for the SanLuis & Rio Grande for which I have completed tracks and
    most roads. Detailing it ought to not be much problem, it is all agricultural except the part over LaVeta Pass and the
    western end of the line to Creede.

    J. H. Sullivan
    (landnrailroader)

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •