Technology
Where do TrailRunners live?
30.05.2007 23:08 | Permalink
As one might expect, the TrailRunner community is very international. Thanks to google, I can present you a Geo Map Overlay for TrailRunners, a graphical representation of the volume of visitors coming from locations around the world. The largest points indicate locations driving the most visitors to the TrailRunner website.
Interestingly most of my visitors come from Europe, something I can also proof by the donations I get. But why is that so? Americans, put your shoes on…!
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Mac OS 10.4.8 - the rounding error
31.10.2006 19:37 | Permalink
MacOS X 10.4.8 seems to introduce a bug where saving floating point coordinates into a document will round the values. Well, rounding could be a good thing, but in this case coordinates are rounded right after the 4-th digit resulting in a possible 50m difference to the original location.
So after the unwanted rounding has occurred, all coordinates are pinned to the fixed grid of 4 decimal digits, creating interesting "track-jaggies".
Release 119 has fixed this by storing coordinates in double precision. If you can, please reopen a backup saved with a version prior to your update to 10.4.8.
Sorry, it really wasn't my fault (this time)
So after the unwanted rounding has occurred, all coordinates are pinned to the fixed grid of 4 decimal digits, creating interesting "track-jaggies".
Release 119 has fixed this by storing coordinates in double precision. If you can, please reopen a backup saved with a version prior to your update to 10.4.8.
Sorry, it really wasn't my fault (this time)
Resolution vs. Information
27.08.2006 21:30 | Permalink
What you see in the two pictures below is the very same location. In the greater perspective, the topographic TK20 map is absolutely perfect for hiking and route planning. And next, a small keyhole into GoogleMaps at zoom-level 1.
Although the resolution of the satellite images are perfectly fine, it's an overload of information. If you layout a route in the topographic map, it's possible to work in a wide aspect and still find the trails you want. With the satellite imagery, you can pin down to footsteps, but working in high zoom can be very tedious, as you often loose the overall point of view.
The moral: as ever, less is often more.
Although the resolution of the satellite images are perfectly fine, it's an overload of information. If you layout a route in the topographic map, it's possible to work in a wide aspect and still find the trails you want. With the satellite imagery, you can pin down to footsteps, but working in high zoom can be very tedious, as you often loose the overall point of view.
The moral: as ever, less is often more.
Nike+iPod+TrailRunner
01.08.2006 00:14 | Permalink
The software update for the Nano will include a new menu item, "Nike+iPod," which allows you to choose your workout distance and select your playlist.
Even if it's cool to hear some motivating tunes during your workout, how do you know what the 5 miles course is? It's clear: TrailRunner is the next perfect addition. Could someone please tell Apple and Nike?
Wikipedia Georeferenzierung
12.07.2005 21:48 | Permalink
Bei der Wikipedia arbeitet man daran, möglichst viele Artikel mit Geo-Informationen zu ergänzen. Hier wird sicherlich in Zukunft einiges entstehen. Zudem werden hier einige Geoinformationssysteme gelistet und gepflegt.
> Wikipedia:WikiProjekt Georeferenzierung
> Wikipedia:WikiProjekt Georeferenzierung
Google Earth Hacks
11.07.2005 19:46 | Permalink
Eine neue Website Google Earth Hacks sammelt und diskutiert alle möglichen Themen rund um die GoogleMaps Mania. Dort findet man auch nette Auszüge aus GoogleMaps wie z.B. Teile der Tour de France Strecke.
> http://www.googleearthhacks.com/
GPS-Koordinaten herausfinden
04.07.2005 15:43 | Permalink
Über GoogleMap und auch über andere Dienste kann man einen beliebigen GPS-Punkt in der Karte anzeigen lassen (Beispiel) . Interessant für das Kalibrieren von TrailRunner-Karten wäre nur der umgekehrte Weg. Falls jemand herausfindet, wie man die GPS-Koordinate eines Klicks in eine GoogleMap herausfindet, dann bitte Bescheid geben.
Google Earth
29.06.2005 10:28 | Permalink
Google Earth - Explore, Search and Discover
Heute ging Google Earth online, eine virtuelle 3D Ansicht auf unseren Planeten. GoogleEarth läuft aber (noch) nicht auf MacOS X und (wahrscheinlich) ist Europa nicht (vollständig) kartographiert. Dass man in 3D durch eine Stadt fliegen kann ist schon eine sehr schöne Spielerei.
Bei der Gelegenheit: Der TrailRunner unterstützt bereits maps.google.com und multimap.com, wenn man kalibrierte Karten nutzt.
Technorati Profile
Bei der Gelegenheit: Der TrailRunner unterstützt bereits maps.google.com und multimap.com, wenn man kalibrierte Karten nutzt.
Technorati Profile