Navit
From Openmoko
(→Select Destination) |
(→Routing) |
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==Routing== | ==Routing== | ||
+ | The main menu has 4 submenus | ||
+ | * Action | ||
+ | * Settings | ||
+ | * Tools | ||
+ | * Route | ||
+ | Normally you would assume the entering a town can be found under the submenu Route, but Town is hidden under submenu Action. Route will provide the description of the route as text and a height profile of your trip. Tools was not working on 08/2009 Version of navit on SHR (see [[SHR User Manual]]). | ||
+ | |||
===Select Destination=== | ===Select Destination=== | ||
[[Image:navit_main_menu.png|200px|thumb|Navit Main Menu]] | [[Image:navit_main_menu.png|200px|thumb|Navit Main Menu]] | ||
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[[Image:navit_select_country.png|200px|thumb|Select Country]] | [[Image:navit_select_country.png|200px|thumb|Select Country]] | ||
− | ===Enter Country first=== | + | ====Enter Country first==== |
[[Image:navit_main_menu.png|200px|thumb|Navit Main Menu]] | [[Image:navit_main_menu.png|200px|thumb|Navit Main Menu]] | ||
Before you can search for City you have to select a Country. To do that, click on the icon in the left upper corner of the search field (could look like a white square with blue top-left quadrant). The search is still a little buggy. | Before you can search for City you have to select a Country. To do that, click on the icon in the left upper corner of the search field (could look like a white square with blue top-left quadrant). The search is still a little buggy. |
Revision as of 22:19, 13 August 2009
Navit is one of the applications that runs on the Openmoko Phones. For a list of all applications, visit Applications
As described on the Navit home page,
"Navit is a car navigation system with routing engine.
Its modular design is capable of using vector maps of various formats for routing and rendering of the displayed map. It's even possible to use multiple maps at a time.
The GTK+ or SDL user interfaces are designed to work well with touch screen displays. Points of Interest of various formats are displayed on the map.
The current vehicle position is either read from gpsd or directly from NMEA GPS sensors."
Some people say Navit is also a good choice for pedestrian and bicycle navigation.
Contents |
Acknowledgment
Thanks to Alessandro, stefan_schmidt, cp15 and all Navit developers I have done a small ("not really working") preview of Navit on Neo1973 at Telemobility Forum 2007. Thanks to GFoss guys to invite me. Tyrael
FSO (OM2008.x,SHR,...)
You can now simply add a feed from there : http://download.navit-project.org/navit/openmoko/svn/
Essentially, to enable this directory as feed and install or update navit do:
- Only for the first time:
echo src navit http://download.navit-project.org/navit/openmoko/svn > /etc/opkg/navit-feed.conf opkg update
- Always:
opkg install navit
Navit will be auto-updated when you run opkg upgrade later
Navit might not be able to use gpsd at startup:
navit:plugin_load:can't load '/usr/lib/navit/vehicle/ libvehicle_gpsd.so', Error 'libgps.so.16: cannot open shared object file: No such file or directory' navit:vehicle_new:invalid type 'gpsd'
to solve this issue (necessary for SHR):
opkg install libgps17 ln -s /usr/lib/libgps.so.17 /usr/lib/libgps.so.16
Debian
Navit is now in Debian testing and unstable.
Add the following line to /etc/apt/sources.list with e.g. editor vi or nano:
deb http://ftp.de.debian.org/debian unstable main
Then update with apt-get:
apt-get update
The up-to-date source package is available through git at git://git.debian.org/git/collab-maint/navit.git (browse).
Set up the maps you want
The Easy Way
Use Navit pre-processed OSM maps. Navigate to the region you want, and click select to select it, select the region you want, then click download.If you just want the entire planet (as of this writing, ~1.8 GB), it's here.
CloudMade also has up-to-date maps from OpenStreetMap by country (by state in the US).
From the command line
OpenStreetMap - follow directions at http://wiki.navit-project.org/index.php/OpenStreetMaps
- There are some pre-processed, up-to-date maps that can be grabbed with wget:
wget -O germany.bin http://maps.navit-project.org/api/map/?bbox=5.185546875,46.845703125,15.46875,55.634765625
- Here's an example to get the maps for the area around Seattle, WA:
- Find the map coordinates using http://informationfreeway.org/?lat=47.520270037501454&lon=-122.20130713167327&zoom=9&layers=B000F000
- Download 4 regions from OpenStreetMaps (see below for a script to do this for you automatically for largish areas):
wget -O map1.osm http://www.openstreetmap.org/api/0.5/map?bbox=-122.2,47.5,-122,47.7 wget -O map2.osm http://www.openstreetmap.org/api/0.5/map?bbox=-122.4,47.5,-122.2,47.7 wget -O map3.osm http://www.openstreetmap.org/api/0.5/map?bbox=-122.4,47.3,-122.2,47.5 wget -O map4.osm http://www.openstreetmap.org/api/0.5/map?bbox=-122.2,47.3,-122,47.5
- A binary Navit map file needs to be created. The following uses osm2navit, and it's recommended that this command be used on something more powerful than the Neo:
cat *.osm | osm2navit --dedupe-ways mymap.bin
Copy the map to the NEO
To copy the map using scp (replace /directory as is appropriate in the following):
scp mymap.bin root@neo:/directory
If you copy the map germany.bin to the SD card on the Neo use e.g.
scp germany.bin root@neo:/media/card
Once it's somewhere on the NEO, Navit needs to know that it's there.
mkdir ~/.navit cp /usr/share/navit/navit.xml ~/.navit/navit.xml vi ~/.navit/navit.xml
In the navit.xml file, put the following into a new <mapset> section (and disable the default <mapset> just above - or else it will not work):
<map type="binfile" enabled="yes" data="/directory" />
For example with a germany.bin on the SD-card you use:
<mapset enabled="yes"> <map type="binfile" enabled="yes" data="/media/card/germany.bin" /> </mapset>
or if you store all downloaded maps in the directory /media/card/maps then add the following lines to navit.xml.
<mapset enabled="yes"> <map type="binfile" enabled="yes" data="/media/card/maps/*.bin"/> </mapset>
Note that the bin-file and the map set both have to be enabled.
Disable unused mapset sections by setting enabled to no, e.g. the pre-installed sample maps at line 370 in navit.xml.
<mapset enabled="no"> <xi:include href="$NAVIT_SHAREDIR/maps/*.xml"/> </mapset>
- The version of osm2navit with which you build the maps should match the version of navit you have. If in doubt, build the maps on the Openmoko.
Tips and Tricks
Center on Vehicle
Navit supports a "always center on vehicle" option.
To activate this add
follow="3"
to the vehicle tag in navit.xml.
<vehicle name="Local GPS" profilename="car" enabled="yes" active="1" follow="3" source="gpsd://localhost" gpsd_query="w+xj" color="#0000ff">
The "3" causes to give the gui time to do something between the repaints (drag the map or browse the menu). When its set to "1" navit does nothing more than repainting the map continuously.
Routing
The main menu has 4 submenus
- Action
- Settings
- Tools
- Route
Normally you would assume the entering a town can be found under the submenu Route, but Town is hidden under submenu Action. Route will provide the description of the route as text and a height profile of your trip. Tools was not working on 08/2009 Version of navit on SHR (see SHR User Manual).
Select Destination
When you click on the map the menu appears. Select Action and then Town.
Enter Country first
Before you can search for City you have to select a Country. To do that, click on the icon in the left upper corner of the search field (could look like a white square with blue top-left quadrant). The search is still a little buggy.
News
Getting the display right
If using SHR the keyboard in country/town/street search mode does not fit on the street, make sure your gui configuration is set to the following line:
<gui type="internal" font_size="350"/>
The example line provided for freerunners hides some important icons. Namely, instead of typing your city name first, you will first have to click the button on the top left, to go into country search mode. Enter your country name, then the city name, in order to enable the search function. This requires your map data to be searchable.
You can start in fullscreen mode with fullscreen="1"
<gui type="internal" font_size="350" fullscreen="1"/>
If you want to enable "+" and "-" as Zoom-In and Zoom-Out buttons on the bottom of the map enable the button with the following xml-tags:
<osd enabled="yes" type="button" x="-96" y="-96" command="zoom_in()" src="zoom_in.xpm"/> <osd enabled="yes" type="button" x="0" y="-96" command="zoom_out()" src="zoom_out.xpm"/>
Street names
They are now displayed on Openmoko using the CVS version of Navit (20071217).
Point selection by pen
Easier using the CVS version (20071217).
Speech
Navit can speak if you install eSpeak + speech-dispatcher and updates your navit.xml file. For adventurous people, one way to do this (in SHR starting navit did not work anymore after this procedure):
- mokoTTS aims to integrate these packages in OM:
http://projects.openmoko.org/projects/mokotts/
install espeak, dotconf, and then speech-dispatcher. note: running 2008.8 updating from zecke's "testing" repo does not require "dotconf"
- change the speech tag in navit.xml:
<speech type="cmdline" data="spd-say '%s'" />
or "spd-say -l fr '%s'" for using the French voice for example.
Note: Package speech-dispatcher broke my audio after suspend with current SHR (2009-04-13, though the problem's not shr, but speech-dispatcher itself). A solution is to disable starting of speech-dispatcher with:
update-rc.d -f speech-dispatcher remove
And then edit /usr/bin/navit, so that it starts speech-dispatcher before navit, and stops it afterwards. See http://lists.openmoko.org/nabble.html#nabble-td1088795
Alternatively, you can make speech-dispatcher restart on resume, see http://trac.shr-project.org/trac/ticket/494
Maps
Downloadable Maps
Downloadable OSM maps for most areas of the world are available free in Navit format from Cloudmade at http://downloads.cloudmade.com/. Simply navigate to the country or region you want and download the .navit.bin.zip
version of the map. You'll have to exatract the .bin
file from the ZIP archive before using it with Navit.
Planet extract
You can download pre-compiled (ready-to-use) maps using the OpenStreetMap-data from the the navit planet extractor ;-)]™ which allows you to select a region of OpenStreetMap to extract. This will give you a binary file that can be used directly by Navit without further processing. The planet extractor's map data is updated daily.
Script to download OSM maps
Wurp wrote a little python script to download all OSM maps within a lat/long rectangle. Just copy the script to a file called dlOSM.sh, chmod +x it, and run it like dlOSM.sh <minimum latitude> <maximum latitude> <minimum longitude> <maximum longitude>
It takes a long time for large maps. I could optimize it some by having it try to get a big section at once, then if it fails, break it into smaller pieces and recurse. I'm not sure when/if I'll get around to that...
dlOSM.sh:
#!/usr/bin/python import os import sys #import math def doIt(cmd): os.system(cmd) def getOsms(basename, minLat, maxLat, minLon, maxLon): '''basename - base name of map, maps are named {basename}{count}.osm minLat - latitude of the west side of the map maxLat - latitude of the east side of the map minLon - longitude of the north side of the map maxLon - longitude of the south side of the map''' wgetCmdTemplate = 'wget -O %s%s.osm http://api.openstreetmap.org/api/0.6/map?bbox=%s,%s,%s,%s' currLat = minLat mapCount = 0 while currLat < maxLat: nextLat = min(currLat + 0.1, maxLat) currLon = minLon while currLon < maxLon: nextLon = min(currLon + 0.1, maxLon) doIt(wgetCmdTemplate % (basename, mapCount, currLon, currLat, nextLon, nextLat)) currLon = nextLon mapCount = mapCount + 1 currLat = nextLat (minLat, maxLat, minLon, maxLon) = map(float, sys.argv[1:]) getOsms('map', minLat, maxLat, minLon, maxLon)
Improvements of GPS daemon by GSM network profiles
Cellhunter is game to map GPS locations to a GSM network cell profile of available GSM network cells the freerunner can connected to. The strength of the signal and the currectly used GSM network cell and its neigbours can be used to improve GPS daemon in areas where no GPS satellites are available (e.g. in building or in narrow road with high buildings or bad weather conditions).
Navit
Navit is a car navigation system with routing engine.
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