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Thread: VOICES Traffic Data

  1. #61
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    This is an excellent idea, and will be a fantastic edition to Voices. Its too bad there isn't a national weather/traffic source out there. It would be very useful for many applications to have a database of weather/traffic/road conditions that could be used worldwide!
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  2. #62
    VENDOR - Centrafuse veetid's Avatar
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    I got MapMarker to batch Geocode Intersections and its really accurate. Alot more than I expected. It was accurate enough to differeniate between the two sides of the Interstate/Freeway. I am going to try and get all the lat/long info for all of CA tommorrow. This same technic, if it works out, can be used for a lot of independent sites to gather information for other states.

  3. #63
    See me in my wet t-shirt. stevieg's Avatar
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    Cool, sounds grat. is MapMarker only for the US, as this would be useful for a lot of the european info sites
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  4. #64
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    dont know if there is anything useful that you havent already found, but i came across this page looking for a new battery:

    http://www.ntb.com/trafficinfo.htm
    National Traffic and Road Closure Information

  5. #65
    See me in my wet t-shirt. stevieg's Avatar
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    will check it out
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  6. #66
    VENDOR - Centrafuse veetid's Avatar
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    MapMarker is not limited to the US. It is global... It is pretty much the industry standard for geocoding. I just happen to have a copy of it, because we use it at work for geocoding lat/longs for appraisal properties. I work with a company that has the 2nd largest Database for appraisal data in the US. I hopefully can make a good easy system for geocoding with it, that way I can geocode stuff for people. Unfortuntately I couldn't give the software out. It takes about fifty security checks and all new licenses / mac addresses for the machines to install it. You have to get on the phone with them everytime you move it and I think the software cost around the range of over $100,000 (US).....


    One bad thing.... I am not sure if my company has the data for anything outside of the US.... I know it was about 7 cd's, but I will have to look into it.

  7. #67
    VENDOR - Centrafuse veetid's Avatar
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    I finally entered in all of San Diego... It included 312 exits across all the freeways. I then ran it through mapmarker and it was able to find 72% of the intersections. So that left 89 exits off. I attached an updated image. I guess at this point I would have to get those 89 lat/longs individually (take forever) or just say 72% of the exits of a town is good enough.

    One thing I have noticed is that from a high view you can't tell the two different lanes on the interstate. You can't differniate between North, South, East, West. My idea was after I get the lat/longs I would need to determine if they are North, South, West, East and then offset them in the proper direction. Example: If you have a lat/long for a Interstate going South you would want to modify the lat/long to be offset to the left a little bit. That way it would actually sit a little off the Interstate to the left and so forth if you had one going North you would want to offset to the right a little bit.

    Just an update on what I found so far....
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  8. #68
    See me in my wet t-shirt. stevieg's Avatar
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    Quote Originally Posted by veetid
    I finally entered in all of San Diego... It included 312 exits across all the freeways. I then ran it through mapmarker and it was able to find 72% of the intersections. So that left 89 exits off. I attached an updated image. I guess at this point I would have to get those 89 lat/longs individually (take forever) or just say 72% of the exits of a town is good enough.

    One thing I have noticed is that from a high view you can't tell the two different lanes on the interstate. You can't differniate between North, South, East, West. My idea was after I get the lat/longs I would need to determine if they are North, South, West, East and then offset them in the proper direction. Example: If you have a lat/long for a Interstate going South you would want to modify the lat/long to be offset to the left a little bit. That way it would actually sit a little off the Interstate to the left and so forth if you had one going North you would want to offset to the right a little bit.

    Just an update on what I found so far....
    With what you've done so far, would it be possible to generate a list of location names as they appear at the source with the corresponding lat/lon, then I can have a go at pulling the data in and tranlating the traffic data.

    PS What's the mappoint control based software in the screenshot?
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  9. #69
    VENDOR - Centrafuse veetid's Avatar
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    I solved the problem with the pushpins being too close together. I now take the lat/long and based on direction N,S,E,W I calculate an offset, which places the pushpins off the Interstate/Highway. Now you can see the difference in the direction. I posted a new screenshot. Now you can actually look at the 5 and tell if there is traffic on the North or the South, or Both.

    When I am done I will have an XML file that will have all the locations and exits of CA and there lat/longs and direction. I can then supply you with a piece of code that will show you how to update the speeds from a site. You can run that code as often as you like to update your DB. It is fairly simple code and should be easy to convert to anything.

    I will also talk with the VOICES man to let him know how I offset the pushpins and got it to seperate the directions on the map.

    As for the program I am using.... I wrote this whole thing in .NET C#. The mappoint control software in the screenshot is mine.
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  10. #70
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    Not sure if there is any way to extract this type of information...but i stumbled across this today:

    http://www.highwayconditions.com
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