Which GPS or routing app can give ford warnings?

Discussion in 'Mapping & Navigation' started by Myway, Sep 27, 2017.

  1. Myway

    Myway Long timer

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    When you get all the fords out of Openstreetmap database and you make a poi file out of it.
    as *.gpx or *.csv or else.

    Which gps or routing app can be used, that give a warning, visual and/or sound, like with speedcamera's?

    How is this done?
    #1
  2. Myway

    Myway Long timer

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  3. gundrted

    gundrted Been here awhile

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    Do you mean ford as in ford a stream?

    Sent from my SM-G930U using Tapatalk
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  4. DaMonk45

    DaMonk45 I B Da Monk

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    @chrisjk yes, how they should be taged in the map data is becoming a topic.
    The hows and why of it and why.
    #4
  5. Myway

    Myway Long timer

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    Yes, a stream.
    https://wiki.openstreetmap.org/wiki/Tag:ford=yes

    In Openstreetmap it can be tagged on a node [​IMG] and a way [​IMG]
    But we have One feature, one element, so it is a node or the way gets ford=yes, not both.
    https://wiki.openstreetmap.org/wiki/One_feature,_one_OSM_element

    On a way the first and last waynode must be set on the riverbank ( but when that is not drawn in yet as a polygon) it should be set where the riverbank is, land goes over in ford water, full wide river.
    Then the length of the ford is known.

    For me it is important that you know the first or last waynode of the ford. Depends, from what side your coming. This could be the point warning in the gps.
    Over 250 meters, there is a ford.
    But
    A ford with a node on the place where the line waterway cross the river, this is further and you get the warning too late.

    How to get the first and last waynode of a fordway. in/out of the ford.
    http://overpass-turbo.eu/s/s1I
    We can export this to ...................
    advfordfirstlast.png

    or the waynode where the waterway cross the fordway.
    http://overpass-turbo.eu/s/s1J
    advfordwaterway.png
    You see the icon that is set on the middle of the fordway.

    But now the not good , two element tags, one feature ford.
    http://overpass-turbo.eu/s/s1L
    Then you get two icons but there is one ford/feature.
    Below the images of the above link.
    twoelements1.png

    twoelements2.png

    Because the waterway line (purple) is not in the middle of the this, render makes two icons for the map, because of two elements!.
    But if the waterway line is in the middle, the render show one, because he can/will not project two icons slightly above each other, this makes a less readable map.
    The render decides, how to project. But two elements is the base.

    See those two pink dots, in out of the ford on the riverbank. ( here the riverbank polygon is not draw yet).
    Important to know. When I make a roadbook this is the warningpoint !!!


    We could make a POI database of fords, so that gps with a POI warningsystem could give a beep.

    A intelligent routing app, could take the first (pink) as the point to calculate from where in front of the ford, to give a warning. And set there a icon to go into the ford.
    For me fords should be on the way, maybe a small ford less then 4 meter, could be a node.
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  6. ohgood

    ohgood Just givver tha berries !!!

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    locus map can


    pick the distance
    Screenshot_2017-09-27-17-11-01.png
    pick the type of notification
    Screenshot_2017-09-27-17-11-05.png
    pick the folder full of waypoints
    Screenshot_2017-09-27-17-11-47.png

    then ride and get notified upon reaching them. I like to get a increasing frequency of beeps as I get closer.
    #6
    Myway likes this.
  7. Myway

    Myway Long timer

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    Garmin GPS
    https://www.garmin.com/us/maps/poiloader

    Is there a list with devices that have proximity alerts?
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  8. kurviger

    kurviger Bloke from Kurviger.de

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  9. txingui

    txingui Adventurer

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  10. Myway

    Myway Long timer

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    In this link I do not read something about a warning system to a point.
    A waypoint is something different then a poipoint.
    Users make waypoints, and use a poipoints collection. To select one then it is a waypoint.
    A warningpoint is not a waypoint.
    This warningpoint could be a trackpoint in the track or routepoint in a route, but it is not a viapoint. A point to change the course.

    http://manual.twonav.com/manual/twonav_33_en/wiki_twonav_smartphone/#!864waypoints.htm
    There is a warning system.
    Then you should use a poicollection.

    I tried Twonav and have Land on the PC for some time, because of the roadbook, to make real roadbooks, saying that it looks also like a official road book used in the cross country rally's, but also works like that. We used Land to make roadbook tracks. Not anymore.
    We looked at it from a motorcycle point of view, navigation was bad, it was developed more for bicyclist and walkers.
    Coming from Mapsource and Basecamp, Land was promising, but the Openstreetmapdata styled as motocyclist liked to was not possible. We like to seen which way are accessible for motorcylist.
    Some of us bought a TwoNav Delta or Sportiva, discussed it a lot on a forum, but that part is dead now. Why?
    Now there is no Motorcycle product for sale. Software only.
    But that was some years ago.
    Things changes.
    On the other hand, give it a new change.

    Can you explain , why we should use it now?
    What is different?

    About fords, when using openstreetmap data for routing, vector databasefile, we do not have to make a waypoint/poifile with ford points.
    It is already in the data, if it is in the file, when it is, it is only a software thing to set it on. When people want warnings for fords.
    #10
  11. txingui

    txingui Adventurer

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    I only speak a little English, I hope you can understand ...
    Waypoints in twonav, there are different ways to use and configure, you can use a waypoint as a single destination or you can open a file of several waypoints and configure twonav to make a proximity alert and it is not necessary for waypoints to be part of a destination specific. (same as radar alerts), I do not know if this is what you have asked ....

    About the roadbook with the compegps program, they are only interesting for their own system because their "advantage" is that they can put inside the same file information as a maneuver image or sounds and are displayed on the screen while we are traveling the "track ".
    I use the roadbook options in compegps to get partial distances in a track and create roadbook in excel, simply pass the data to HTML format and works perfect and very easy ...

    To extract the information from the fords, it is possible to use QGIS, in this tutorial shows how to extract points from the pubs :-)
    http://www.qgistutorials.com/en/docs/downloading_osm_data.html
    and then pass the data to gpx? https://mygeodata.cloud/converter/shp-to-gpx, I have not tried, it's to give an idea ...
    #11
  12. Myway

    Myway Long timer

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    There are several ways to get data.

    The way over QGIS, is longer, then using a converter.

    I described it here with a overpass search, do the search and then you can use export tab and export it directly to a gpx file.
    #12
  13. txingui

    txingui Adventurer

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  14. txingui

    txingui Adventurer

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    Myway, i dont know if you still use Compe, however i will try to make one version of an excel to make tulips from compegps html data, i need translate at least the basic information....

    In spanish but i hope the images help to understand...

    #14
  15. txingui

    txingui Adventurer

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