Google Earth - Overland Track
Phil Wyatt
A recent update to Google earth imagery now has the northern part of the
Overland Track in Tasmania covered. Works really well with the KML file
available on the Parks website
http://www.overlandtrack.com.au/doing_maps.html
Turn on the terrain for an ever better experience.
Cheers - Phil
ziggy99
As a newbie to Google Earth, can you advise on how to load that file.
When I save it for loading into GE, it shows as an xml file. When
opened, just shows as code. ??
Ken
ziggy99 <rs...@westnet.com.au> wrote:
If the extension isn't .kml then change it and then use the open menu command in
Google Earth.
ziggy99
Thanks Ken.
anthon...@gmail.com
Yes, awesome technology isn't it! I've been using Google Earth for
viewing my bushwalking routes. I log the track I've walked with my
Garmin eTrex, upload it to my computer via a serial cable using the
free EasyGPS program from the web, then convert EasyGPS's GPX file to
KML (using a program I wrote) and drag it into GE. Brilliant.
The only complaint I have is that GPS technology is still not accurate
to the metre level. The Overland Track is about 36 metres off the
track you can see on the aerial photos in GE and even goes through the
middle of a few lakes! (Not sure if the problem is in Google's geo-
referencing of the images or the GPS accuracy). I have similar results
with my own GPS - I took two track logs along exactly the same trail
on different days and the two tracks varied by about 20 metres in some
places. Maybe when the European GPS system gets off the ground we'll
be able to get 100% accurate track logs...
Anyway Google Earth is a whole new way to plan bushwalking trips!
Cheers,
Anthony.
http://adunk.ozehosting.com
Phil Wyatt
The track was recorded with a Mio P550 with external aerial. It aligns
pretty well with other mapping data that I use in mapinfo so I think its the
registration process for the Google Earth images that are slightly out. I
have advised GE and maybe they will do some corrections.That image is quite
old as it does not show the newly developed track from the Cradle Mt Visitor
centre to Ronny Creek. It looks like it was taken early on in that project
as the track has been brushcut and there are some piles of timber in view
but the two big bridges are not visible.
I am not complaining though, still great technology! Now if we can just get
a good image for the southern part of the park.
Cheers - Phil
anthon...@gmail.com
Yes, the GPS log for the Overland Track seems to be consistently to
the west of the aerial photos. If it was just a case of GPS accuracy,
I would have expected the log to drift west and east of the aerial
photos. So that points to it being a geo-referencing problem with the
images.
I've seen similar problems with the GE data in my own area (Gosford,
NSW). The old railway dams at Somersby appear half way up the hills
when you view the earth at a low enough angle to see the GE terrain
model - they should of course be in the valleys.
Still, like you say its pretty darn good compared to what used to be
available. And its free!
Anthony.
Ken
anthon...@gmail.com wrote:
Typical standard GPS unit has an accuracy of about 10 to 15m, explaining the
variation. I think the theoretical error is 1-2m and some of the high quality
units will get close.
Google seems to have trouble with their alignments. I'm certain it will get
better.
Rusty Gunn
Can you tell me how you uploaded the track into GE as I have many tracks
that I would love to do.
--
Regards
Wayne
"We are not actually lost,....... just temporarily misplaced."
Remove yourjacket when replying.
"Phil Wyatt" <phil....@parks.tas.gov.au> wrote in message
news:47f9...@patrick.nettas.net...
anthon...@gmail.com
I know your question is directed to Phil, but I use the EasyGPS
software ( http://www.easygps.com ) to upload the tracks from my GPS,
save them as GPX files, then convert them KML using a program I wrote
( http://adunk.ozehosting.com/software/gpx2kml.html ). After this, its
simply a mattering of dragging the KML file into Google Earth (or
using the File Open menu option). I believe there's other programs to
convert GPX to KML on the web too - just search for GPX2KML.
Cheers,
Anthony.
http://adunk.ozehosting.com
On Apr 7, 9:53 pm, "Rusty Gunn" <cher...@myjacketoptusnet.com.au>
wrote:
Phil Wyatt
I use a variety of techniques in both Oziexplorer and Mapinfo - both have
the capability to create KML files pretty easily from track files.
If you want to make the tracks public then check out the Google earth
Community on the web
http://bbs.keyhole.com/ubb/ubbthreads.php/Cat/0
cheers - Phil
Rusty Gunn
Will try both ways to upload my track logs, currently have 75 tracks logged.
--
Regards
Wayne
"We are not actually lost,....... just temporarily misplaced."
Remove yourjacket when replying.
"Rusty Gunn" <che...@myjacketoptusnet.com.au> wrote in message
news:47fa0b2f$0$18548$afc3...@news.optusnet.com.au...
David Noble
> Thanks guys
>
> Will try both ways to upload my track logs, currently have 75 tracks logged.
>
This site will upload your files and display them on google maps -
A freeware program that will do the conversions from gpx to kml (Google
Earth keyhole markup language) is
GPSBabel
It is cross platform.
Dave Noble
Rusty Gunn
tried to download GPSBabel but the file is corrupt.
--
Regards
Wayne
"We are not actually lost,....... just temporarily misplaced."
Remove yourjacket when replying.
"David Noble" <dno...@ozemail.com.au> wrote in message
news:47fb7623$0$13242$5a62...@per-qv1-newsreader-01.iinet.net.au...
Ken
"Rusty Gunn" <che...@myjacketoptusnet.com.au> wrote:
> Hi Dave
> tried to download GPSBabel but the file is corrupt.
>
I assume form http://www.gpsbabel.org/ Have you tried Firefox ? It works.
Ken
Rusty Gunn
--
Regards
Wayne
"We are not actually lost,....... just temporarily misplaced."
Remove yourjacket when replying.
"Ken" <do...@email.me> wrote in message
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