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roadnav 内含一个基于wxWindows库的车载导航系统。编译后

Roadnav
Copyright (c) 2004 - 2006 Richard L. Lynch

Roadnav is a cross platform in-car navigation system.  Roadnav can obtain a
car's present location from a GPS unit, plot street maps of the area, and 
provide directions to any location in the USA. If either Festival or Microsoft
SAPI 5.1 are installed, Roadnav can also provide verbal cues when
a turn is approaching.  Roadnav uses the free TIGER/Line (Topologically
Integrated Geographic Encoding and Referencing) files from the US Census
Bureau to build the maps, along with the GNIS state and topical gazetteer
data from the USGS to identify locations.

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1. INSTALLATION

Unix Prerequisties:
- wxWindows 2.6.2 or newer
- LibRoadnav
- g++
- make
- gpsd header files and libraries (optional)

Windows Prerequisties:
- wxWindows 2.6.2 or newer
- LibRoadnav
- Microsoft Visual Studio 6.0 or .NET

Installation is simply a matter of entering './configure' and 'make install'
at the command prompt. Alternately, precompiled packages are available
for Windows, Mac OS X, Fedora Core 4, and Debian from the Roadnav web site.
 
If you would like to compile using Microsoft Visual Studio under Windows,
open the Roadnav project file in the Win32\MSVC6 or Win32\MSVC7 directory 
and build it. You will then need to manually copy the files from the data 
and skin directory to "c:\Program Files\Roadnav" and
"c:\Program Files\Roadnav\Skins" respectively.

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2. USAGE

Ensure you have an internet connection.  Execute the Roadnav program. Roadnav 
will automatically download many of the data files it needs.  Go into the
map menu and select "Set Address".  Enter an address in the United States. 
Roadnav will proceed to download the necessary files, and once it is done,
it will display a map centered on the requested address.  Zoom in or out
using the zoom in/out icons in the tool bar or using zoom in/out from the
View menu.

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3. OTHER

Feature type abbreviation data extracted from the Tiger/Line documentation.

State name and abbreviation extracted from the FIPS web site.

Zip code mappings came from a dump of the US Census Bureau's 1999 ZIP code
database (http://www.census.gov/geo/www/tiger/zip1999.html).

TIGER/Line is a registered trademark of the U.S. Census Bureau

Roadnav uses the TinyXml XML parser, originally written be Lee Thomason.
TinyXml has been slightly modified to prevent it from reenabling some 
warnings under MSVC++.