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1 NavIT
2 =====
3
4
5 Navit is a open source (GPL) car navigation system with routing engine.
6
7 It's modular design is capable of using vector maps of various formats
8 for routing and rendering of the displayed map. It's even possible to
9 use multiple maps at a time.
10
11 The GTK+ or SDL user interfaces are designed to work well with touch
12 screen displays. Points of Interest of various formats are displayed
13 on the map.
14
15 The current vehicle position is either read from gpsd or directly from
16 NMEA GPS sensors.
17
18 The routing engine not only calculates an optimal route to your
19 destination, but also generates directions and even speaks to you.
20
21 Navit currently speaks 27 languages :
22 - Brazilian Portuguese
23 - Bulgarian
24 - Chinese (Hong Kong)
25 - Czech
26 - Danish
27 - Dutch
28 - English
29 - Estonian
30 - Finnish
31 - French
32 - German
33 - Hebrew
34 - Hungarian
35 - Italian
36 - Japanese
37 - Norwegian Bokmal
38 - Polish
39 - Portuguese
40 - Romanian
41 - Russian
42 - Slovak
43 - Slovenian
44 - Spanish
45 - Swedish
46 - Telugu
47 - Thai
48 - Turkish
49
50 You can help translating via our web based translation page :
51 http://translations.launchpad.net/navit/trunk/+pots/navit
52
53
54 For help or more information, please refer to the wiki :
55 http://wiki.navit-project.org
56
57 If you don't know where to start, we recommend you to read the
58 Interactive Help : http://wiki.navit-project.org/index.php/Interactive_help
59
60
61 Maps:
62 =====
63
64 The best navigation system is useless without maps. Those three maps
65 are known to work:
66
67 - OpenStreetMaps : display, routing, but street name search isn't complete
68 (see http://wiki.navit-project.org/index.php/OpenStreetMaps )
69
70 - Grosser Reiseplaner and compliant maps : full support
71 (see http://wiki.navit-project.org/index.php/European_maps )
72
73 - Garmin maps : display, routing, search is being worked on
74 (see http://wiki.navit-project.org/index.php/Garmin_maps )
75
76
77 GPS Support:
78 ============
79
80 Navit read the current vehicle position :
81 - directly from a file
82 - from gpsd (local or remote)
83 - from udp server (friends tracking) (experimental)
84
85
86 Routing algorithm
87 =================
88
89 NavIt uses a Dijkstra algorithm for routing. The routing starts at the
90 destination by assigning a value to each point directly connected to
91 destination point. The value represents the estimated time needed to
92 pass this distance.
93
94 Now the point with the lowest value is choosen using the Fibonacci
95 heap and a value is assigned to connected points whos are
96 unevaluated or whos current value ist greater than the new one.
97
98 The search is repeated until the origin is found.
99
100 Once the origin is reached, all that needs to be done is to follow the
101 points with the lowest values to the destination.
102

   
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