eTrex Vista HCx, with multi maps, which does it display?

Discussion in 'Garmin' started by Moby, Oct 4, 2008.

  1. Moby

    Moby Guest

    eTrex Vista HCx, with multi maps, which does it display?

    Hi Guys,

    I have an eTrex Vista HCX and have added several maps, including
    Garmin street level, and shonky maps.

    All maps on the device are checked so they are available.

    So, there are areas where both Garmin and Shonky cover.

    What map do I see on the screen then? Is there a layer order? Can I
    adjust that?

    What I want is to use garmin street maps when in the burbs, and be
    able to switch to Topo maps when in the required area.



    Alan Stuart downunder in Perth, Oz
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  2. Moby

    Klatch Guest

    From them map page:
    Menu/Setup Maps / scroll over to the "i" icon / menu / select "show" or
    "hide" for the two map sets as desired.
    Klatch, Oct 4, 2008
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  3. Moby

    Moby Guest

    OK, I know that.

    But if 2 different maps are set to show for a particular area, and you
    are in that area, which map will be displayed?

    Is there a hierachy order for display??



    Alan Stuart downunder in Perth, Oz
    Local Weather:
    Stuff for sale:

    * Remove NOSPAM.AND.EGGS. from email address for replies.

    And just to try and stop spammers:
    , , , ,
    , , , ,

    Making life REAL hard for spammers with:
    Moby, Oct 5, 2008
  4. Moby

    Jack Erbes Guest

    Moby wrote:
    Yes, there is a hierarchy.

    For the North American mapping the newest street and highway mapping
    (City Navigator) will display when I have a supplemental map that
    contains mapping from City Navigator, BlueChart Americas (marine
    charts), U.S. Topo, and MetroGuide (an older street and highway mapping
    package) installed.

    As it appears on mine, the hierarchy has City Navigator at the top, then
    BlueChart is next, and it becomes a little foggy after that simply
    because I've not taken the trouble to figure it out.

    But only one kind of supplemental mapping will display at a time. The
    basemap and MarinePoints Database that is included on some handhelds
    seem to be handled a little differently than the supplemental maps. It
    appears to me that, (1), the basemap is always inferior to any other
    supplemental mapping when two or more are in the show mode, and,(2) the
    MarinePoints Database is always displayed with any mapping.

    The latter point above can be a little annoying at times in that if you
    are using marine charts you'll sometimes see two icons or objects for
    the same navaid, one from the BlueChart mapping and the other from the
    MarinePoints Database. The location properties of the two icons will be
    very close together normally but not exactly the same.

    Depending on your mix of mapping, you may only have to turn City
    Navigator off to see the supplemental mapping you want. Or you may have
    to turn off more than one of them. Or you can turn them all off and
    then turn the one you want to see on.

    Turning all mapping off and then BlueChart on, in the case of the
    MarinePoints Database, can introduce further catch 22's. If I turn off
    the MarinePoints database I lose the tide symbols from BlueChart because
    they are not included in the uploaded BlueChart mapping, only in the
    MarinePoints Database.

    The tide symbols in the MapSource BlueChart install on a PC are not on
    the charts, they are in the Tides and Marine Services "mapping" that is
    installed along with BlueChart. The Tides and Marine Services map has
    very little detail (basically a coarse world map with national borders,
    major towns, cities, and highways) other than icons for tide point
    symbols and POI symbols for marine services.

    And the final piece of trivia on having multiple mapping is that when
    you have more than one mapping turned on (and only one is being seen of
    course) and you zoom out, at a certain level you will also start seeing
    the outlines of all the maps that are turned on but not being displayed
    in slightly muted or dimmed down lines. But they can be a visual
    annoyance and give rise to a desire to only have one mapping on at a time.

    Jack Erbes, Oct 5, 2008
  5. Moby

    Jack Erbes Guest

    I think that is what is happening with the MarinePoints Database. I'm
    don't know why they called it a "database" instead of a map but it may
    just be, as you suggest, a transparent map.

    Jack Erbes, Oct 5, 2008
  6. Moby

    Dan Anderson Guest

    It's possible to have transparent maps that will display at the
    same time as a non-transparent map. I don't think Garmin makes
    any but you might find some third party maps that are transparent.
    A transparent map might be limited in content to avoid display
    conflicts with some other map. There's no command in the receiver
    or MapSource to change the map type. The map is built one way or
    the other.

    I make my trail maps transparent so they overlay a topographic map.
    That way I get the trails and contours.


    Western Maps LLC
    Dan Anderson, Oct 5, 2008
  7. Moby

    Dan Anderson Guest

    Humm... Not saying that it isn't effectively a map but I wonder
    if it's working more like user POI's.

    Is there a file installed on the micro SD card that contains
    the MarinePoints? If so, filename?


    Western Maps LLC
    Dan Anderson, Oct 6, 2008
  8. Moby

    Jack Erbes Guest

    I thought I remembered as being a file in main memory but cannot recall
    the name of the file though<

    I thought I also remembered it as being available as a download you
    could reinstall if necessary< But maybe I am confused about that too<

    I searched the Garmin web pages and can't find it mentioned anywhere<

    I looked at the 76Cx detailed specs here:

    and it says that

    "(GPSMAP 76Cx & 76CSx) Built-in routable basemap (North and South
    America) with cities, highways, interstates, local thoroughfares and
    secondary roads within metro areas, interstate exit services, airports,
    rivers, lakes, coastlines and tide stations"

    That spec sheet seems to be dated REV0806 (June 2008 or August 2006?) so
    maybe something has changed< They make no mention of an "Americas
    Marine Point Database" or anything like that< I still have that listed
    on the Maps Info menu on my 76Cx and can turn it on and off from there<

    It may be that the Marine Points database is like or part of the basemap
    and cannot be loaded or reloaded except during manufacture<

    But I use my 76Cx on boats quite a bit and know that, with the basemap,
    City Navigator, and Marine Points database on, I see all or nearly all
    the navaids that I ever encounter in New England waters<

    And if I am using BlueChart mapping I see two marks in most places, one
    from BlueChart and the other from the Marine Points Database< One of
    the two will go away if I turn either BlueChart or the database off<

    The included navaids listings are actually very good< I could navigate
    familiar waters with those alone as far as getting from one waypoint to
    another in familiar and known to be safe from point to point routes< Of
    course, I would not have accurate shoreline locations, soundings, rocks
    and shoals, and all the other stuff that is on the BlueChart mapping<

    Jack Erbes, Oct 6, 2008
  9. Moby

    Dan Anderson Guest

    Checking a 76S, I don't see "American Marine" listed in the map list
    but the marine data is part of the "basemap." Navaids, tide stations,
    and services can be turned ON/OFF under map setup->marine. The 76Cx
    seems to have made it a separate "map" as it's listed in the map list.
    The map setup options removed those mentioned above and added colors,
    light sectors, and symbol set.

    The plain 76 (not a mapping receiver but had 1 meg for POI's) came with
    some marine data and a city database. The eTrex Venture was not marketed
    as a marine GPSR so it only had a city database. The files for these
    databases were/are supplied on the Garmin web site so you could restore
    the original data. Since I don't use these for marine activities and the
    Venture city database had smaller towns in it than the one supplied for
    the 76, I put the Venture's city database into the 76. There was no
    other "basemap" in these non-mapping receivers.

    I'd characterize the basemap for the GPSmap 76 as containing the marine
    database plus the basic roads and cities. The basemap for the eTrex
    Legend (never had one to confirm) probably had the roads and cities minus
    the marine data.

    The marine data is clearly a "database" and roads are also a "database"
    but a special case that someone would more likely call a "map." How you
    want to structure and call the parts is just a matter of programming and
    marketing. So that's my take on why it's a "database" and a little on
    how Garmin is changing the organization of the data stored in the receivers.


    Western Maps LLC
    Dan Anderson, Oct 6, 2008
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