11. August 2010 18:27
OpenStreetMap nenoliedzami ir ļoti, ļoti vērtīgs projekts. Piemēram, kājiniekam vai riteņbraucējam šī karte ir noderīgāka par Google Maps, jo pēdējā praktiski vispār nav atrodamas dažādas takas parkos utt.
Taču community veidotai kartei (nav gan izslēgts, ka arī citās kartēs ir tāpat) ir arī dažādas kļūdas. Piemēram, koordinātās 0;0 (netālu no Āfrikas krasta, kur ekvators krustojas ar 0 platuma grādu) OpenStreetMap ir ierakstīts “South Pole”. Korektās koordinātas ir –90;0, acīm redzot kāds ir nokļūdījies. Man pagāja laiciņš, kamēr sapratu, kāpēc kartē redzu dienvidpolu.
For initial description and reasoning behind the OfflineCacher application, see the previous post. In short – OfflineCacher is a Windows Mobile Standard (otherwise known as Smartphone) application for geocaching without using data (GPRS/EDGE/…) connection. Both maps and additional cache information is predownloaded on the desktop and copied over the wire to the phone.
Note: the instructions below are constantly updated when new version is released.
Download (current version is v.5):
- unzip the desktop application – no further setup required, just launch it;
- on the mobile phone storage card create directory \Storage Card\OfflineCache (the directory goes directly on the storage card, the given path is when accessed from the phone itself) – it cannot be changed currently;
- it is recommended to either use a card reader or switch the phone to work as a removable drive and not via ActiveSync (otherwise the copy speed will be extremely slow and during the copy it will automatically overwrite files and not leave existing ones; also via ActiveSync the desktop application will not be able to directly connect to the phone).
- download .gpx file from geocaching.com (either individual cache or a pocket query) to a local folder – specify this folder in the desktop application; alternative is to download .gpx files to the OfflineCacher data folder under Caches subfolder.;
- connect your phone via USB connection, set it up so it does not use ActiveSync;
- create the OfflineCacher folder on the memory card – this way the download application will detect it automatically and work always even if for some reason Windows decides to give the card different drive letter later;
- launch the downloader application, select the removable folder option (if required, browse for the folder), it will automatically read the .gpx files and display the caches on the map;
- navigate the map by mouse (right click centers the map, double left zooms in, double right zooms out);
- select the caches you want to visit either from the list or from the map;
- click “Download maps and extras” – this will download maps for all zoom levels (only the deepest for sattelite map) for all selected caches – approximately 3x3 mobile screens are predownloaded; it will also download the cache web page with all logs (the .gpx includes only the latest ones) and images;
- launch the the mobile application, it usually takes about 5 seconds to load (no matter the number of caches);
- usage of the mobile application is via the menus and keyboard shortcuts:
- “1” – zooms out;
- “3” – zooms in;
- “0” – centers on GPS coordinates, second click zooms in on GPS coordinates;
- “Enter” – opens the selected (under the center of the screen) cache info page.
The usage of this application might seem a bit complex at first but after the first time it should be very straight forward – it is this complex because of the requirement to predownload maps – once you start copying the maps to the storage card you will understand why it is better to be done this way – the size of them is quite large and if that is downloaded from the mobile phone, the bill can grow quite a bit.