[OSM-talk] Problem in getting high resolution details on some maps

[Craig Wallace]

On 17/12/2012 03:43, Andre von Biel wrote:
> Hi All ,
>   I am a newcomer to "talk" so please forgive any procedural errors.
> I live in Christchurch, New Zealand and my wife and I take frequent
> holiday trips to the Polynesian Islands and Australia. I use Garmin
> etex VISTA HCx and try to get OSM maps to wherever we plan to go.
> Much to my joy I discovered that at: http://garmin.openstreetmap.nl
> I should be able to get all the map segments I need for a grand and
> glorious South Pacific Map.
> The above statement is almost correct:
> 1. All maps East of the International date line are OK in all respects
> 2. As soon as I cross the dateline to the West the maps appear to be OK
> at large area resolution, but ALL detail (including the map) disappear
> at distance resolution of about 50 Km and smaller.
> 3. The above problem appears to be confined to a vertical strip of
> western longitudes, starting at the date line and reaching as far west
> as north-east New Zealand, the Fijian Islands, etc.
> Although I can not be 100% positive about this, the South Island of New
> Zealand is OK, as is the western portion of the North Island, i.e., west
> of Lake Taupo. Further tests have shown that Tasmania and eastern
> Australia are OK.
> The problem stated above exists whether I have my map assembled by the e
> OSM people or if I download individual *.img Maps
> Can anybody through some light on this problem?

It has been discussed on the forum before. There does seem to be a
problem with those Garmin maps at around 180 degrees, so it affects New
Zealand and other places.
See these threads: http://forum.openstreetmap.org/viewtopic.php?id=9809
http://forum.openstreetmap.org/viewtopic.php?pid=166179#p166179

I don't know if anyone has figured out what's causing this, or how to
fix it.

You could try some other OSM based maps, or try producing some maps
yourself. See http://wiki.openstreetmap.org/wiki/OSM_Map_On_Garmin

Craig