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Thread: SDAL GPS Map Access Navtech Open Standard Thred

  1. #11
    See me in my wet t-shirt. stevieg's Avatar
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    Quote Originally Posted by s003apr
    If the idea is to allow others to make their own custom frontends then there is only two right ways to do it. C or C++.

    Once you get a simple front end for querying the database written in either of these languages then it is almost trivial to make wrappers for almost every other language that anybody would use.
    Also you keep it cross-platform this way, which may not seem important but the Linux/BSD community can put a lot of help behind any OSS project.
    Yep agreed any navigation software mad 'from scratch' ought to be cross platform, probably QT and C or C++; there seems little point doing all that work and limiting it to windows or writing it in VB/C#.net et al and slowing it down!
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  2. #12
    See me in my wet t-shirt. stevieg's Avatar
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    Quote Originally Posted by rickster
    I know navtech is probably the way to go but if we already own the maps etc from teleatlas (ie. destinator et al) then can't we use our own engine to create a sdk using this

    http://www.na.teleatlas.com/products/formats.html
    We'll have to look into this do you have any idea which format the D3 data is provided in?
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  3. #13
    Variable Bitrate rickster's Avatar
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    Quote Originally Posted by stevieg
    We'll have to look into this do you have any idea which format the D3 data is provided in?
    Im not sure but i found some more info and some sample downloads of map data in different formats

    http://www.adci.com/products/navteq/index.html

  4. #14
    See me in my wet t-shirt. stevieg's Avatar
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    Quote Originally Posted by stevieg
    We'll have to look into this do you have any idea which format the D3 data is provided in?
    I've had a look it doesn't look like it's on the CD in a format we know, it looks like they get the raw data from Navteq (current D3 maps) or Teleatlas and compile into their own format.

    If anyone can get me a SDAL CD/DVD I can have a look and see if we have everything we need to start coding.

    I would assume that if the format is readable and usable then the next step is to contact Navteq and let them know what we're doing and make sure they know it's going to be done whether or not they agree, and it's gpoing to be free/multi platform, then start a sourceforge project.
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  5. #15
    Variable Bitrate rickster's Avatar
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    Quote Originally Posted by stevieg
    I've had a look it doesn't look like it's on the CD in a format we know, it looks like they get the raw data from Navteq (current D3 maps) or Teleatlas and compile into their own format.

    If anyone can get me a SDAL CD/DVD I can have a look and see if we have everything we need to start coding.

    I would assume that if the format is readable and usable then the next step is to contact Navteq and let them know what we're doing and make sure they know it's going to be done whether or not they agree, and it's gpoing to be free/multi platform, then start a sourceforge project.
    I don't think they'll mind as they will be getting revenues from the sales of the cd's.

    I had a look at bmw's cd and they are a bit weird. They have loads of files and folders of images that I presume are for poi (ie icons for the map and photos of hotels etc for more detail). There is one file called "incar" that has no file extension on it at all.

    I am currently getting a friend to have a look at Audi's/blaukpunkt's data cd to see what that one is based on.

    I will keep you posted.

  6. #16
    Variable Bitrate
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    Im just concerned about routing algorithms. We can write the file access end to read the map data, the front end with some pretty graphics, but if the actual routing doesnt work well this whole project goes down. Is there anyone tackling this issue, or are there algorithms already published somewhere that can be used?

  7. #17
    The Vauxhall Vectra Project ccsnet's Avatar
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    I think thats the plan - make it an open standard - every one wants their data... stands to reason really.

    Terran

  8. #18
    Variable Bitrate rickster's Avatar
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    audi cd's don't use the sdal format guys
    "A conclusion is the place where you got tired of thinking."

  9. #19
    The Vauxhall Vectra Project ccsnet's Avatar
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    Quote Originally Posted by rickster
    audi cd's don't use the sdal format guys
    One thing to point out - I think its only newer systems...

    Terran

  10. #20
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    I was looking into using the SDAL format about a year ago. I registered with their web site and a guy from america called me asking how I wanted to use the data. I told him it would be a something I was looking to do for myself. He told me thay have a SDK for the format but would have to subscribe think he said it was something like I would need to pay 20k. I did have a look at the specification document but it just looked to complicated so I give up. I have been looking at another format that pioneer use for their navigateion system.

    http://www.pioneerelectronics.com/pn...208296,00.html

    They use Tele atlas data and looking at their web siie it look quite interesting.

    http://www.na.teleatlas.com/products/formats.html#gdf

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