Aug 18, 2010

gmapcatcher, an offline map viewer


GMapCatcher is an offline maps viewer. It downloads tiles automatically from many providers such as: CloudMade, OpenStreetMap, Yahoo Maps, Google Map. It displays them using a custom GUI. User can view the maps while offline. GMapCatcher doesn't depend on google-map's java scripts so it should work even if google changes them. It also provides a downloading tool.
GMapCatcher is written in Python 2.6, can run on Linux, Windows and Mac OSX.
You can find a list of improvements and latest features in the Changelog


$ svn checkout gmapcatcher
For Windows users, get the latest Windows installer

Usage is a gui program used to browse google map. With the offline toggle button unchecked, it can download google map tiles automatically. Once the file downloaded, it will reside on user's hard disk and needn't to be downloaded again any more. At release 0.02, it use multi-threaded downloader and can be faster.
After version 0.04, user can force GMapCatcher to re-download old map tiles by checking "Force update". If a tile is older than 24 hours, it will be re-downloaded. is a downloader tools that can be used to download google map's tiles without gui. maps can use files it downloaded without configuration.
Below is an example using
$ --location="Paris, France" --max-zoom=16 --min-zoom=0 --latrange=2.0 --lngrange=2.0




Windows users are highly recommended to download the latest Windows installer. This installer contains all required packages, works well on Win 2K, XP, Vista and Win 7. For a complete list of tested OS, see wiki Tested Operating Systems.
If you choose the tarball (because you have a legacy Windows like Windows 98), you must install Python 2.6, GTK+ for windows, pygtk, pygobject and pycairo yourself.
Currently GMapCatcher also depends on Python Imaging Library (PIL). For gentoo users, emerge dev-python/imaging.



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