Provided by: viking_1.6-1build1_amd64 
NAME
viking - program to manage GPS data
SYNOPSIS
viking [-d | --debug] [-V | --verbose]
[--latitude degrees] [--longitude degrees]
[-z | --zoom ZoomLevelOSM] [-m | --map MapId]
[file...]
viking [-h | --help]
viking [-v | --version]
DESCRIPTION
Viking is a program to manage GPS data.
You can import and plot tracks, routes and waypoints, show OpenStreetMap (OSM) and/or other maps,
generate maps (using Mapnik), geotag images, add coordinate lines, make new tracks, routes and waypoints,
hide different things, etc. It is written mainly in C with some C++ and uses the GTK+ 2 toolkit. It is
available for Linux, other POSIX operating systems and Windows.
Homepage: http://viking.sf.net
Viking is licensed under the GNU GPL.
OPTIONS
file
Specify file to load at start.
-d, --debug
Enable debug output.
-V, --verbose
Enable verbose output.
-?, --help
Show help options.
-v, --version
Show version.
--latitude
Set the initial position to the specified latitude in decimal degrees.
--longitude
Set the initial position to the specified longitude in decimal degrees.
-z, --zoom
Set the initial zoom level. The value is the OSM zoom level (0 - 22).
-m, --map
Add a map layer by specifying the map id. The value needs to match one of the internal ids or an id
from the maps configuration extension (see below). Specifying a value of 0 will use the configured
map layer default.
Internal Map Ids:
OSM Mapnik = 13
OSM Cycle = 17
Mapquest OSM = 19
EXTENDING VIKING
Currently, viking has some extension points based on configuration files. The file format is heavily
inspired by the GtkBuilder file format: you specify the class of the GObject to build and set its
properties. Technically, it is a XML file containing a "objects" root element. Inside this element, you
set a collection of "object".
Here is an example:
<objects>
<object class="ClassName">
<property name="property_name1">Property value</property>
<property name="property_name2">Property value</property>
</object>
...
<objects>
You can find more examples in the documentation part of the distribution.
Map Source. It is possible to add new map's sources. The file is ~/.viking/maps.xml. An example of the
file in the distribution doc/examples/maps.xml. The VikSlippyMapSource allows to declare any map's
source working like OpenStreetMap. It supports the following properties:
id
this is an integer and should be unique as it used to identify the map source
name
a string (should be unique) that is used for the OSM style cache directory name when the Map Cache
directory is the default (~/.viking-maps)
label
the text displayed in the map's source selection dialog
hostname
the server's hostname (eg. "tile.openstreetmap.org")
url
the parametrized address of the tile, in the spirit of C printf format, with 3 "%d" fields for Z, X
and Y (in that order) (eg. "/%d/%d/%d.png")
zoom-min (optional)
The minimum zoom value supported by the tile server. The Default is 0 if not specified.
zoom-max (optional)
The maximum zoom value supported by the tile server. The Default is 18 if not specified.
See Zoom Levels[1]
lat-min (optional)
The minimum latitude value in degrees supported by the tile server. The Default is -90 degrees if not
specified.
lat-max (optional)
The maximum latitude value in degrees supported by the tile server. The Default is 90 degrees if not
specified.
lon-min (optional)
The minimum longitude value in degrees supported by the tile server. The Default is -180 degrees if
not specified.
lon-max (optional)
The maximum longitude value in degrees supported by the tile server. The Default is 180 degrees if
not specified.
file-extension (optional)
The file extension of the files on disk. The default is .png
If the tile source URL ends in something other than .png, then this parameter will need to match it.
This can also be useful in reading a tileset from other software which may name tiles in an
alternative form, e.g. for Mobile Atlas creator it names them .png.tile
Note
The file types actually usable are those supported by GDK Pixbuf Library, which includes at least
PNG and JPEG.
Note
Remember to include the beginning '.' when specifying this parameter.
switch-xy (optional)
Swap the X,Y values around in the URL parametrized ordering.
The default is false.
check-file-server-time (optional)
Sends the timestamp of the tile to the server, so the server can decide whether it should send a new
tile or not.
The default is false.
use-etag (optional)
Use and compare the ETag[2] value in determining whether to download a newer tile. The default is
false.
The ETag value is stored in a separate file in the same directory as the tile to enable checking the
value across multiple runs of the program.
The VikTmsMapSource allows to declare any TMS service. It supports the following properties (as per
VikSlippyMapSource above):
id
label
hostname
url
check-file-server-time (optional)
zoom-min (optional)
zoom-max (optional)
lat-min (optional)
lat-max (optional)
lon-min (optional)
lon-max (optional)
The VikWmscMapSource allows to declare any WMS or WMS-C service. It supports the following properties (as
per VikSlippyMapSource above):
id
label
hostname
url
check-file-server-time (optional)
zoom-min (optional)
zoom-max (optional)
lat-min (optional)
lat-max (optional)
lon-min (optional)
lon-max (optional)
Go-to search engines. It is possible to add new new search engines for the "Go-To" feature. The file is
~/.viking/goto_tools.xml. An example of the file in the distribution doc/examples/goto_tools.xml.
Currently, there is a single object class available: VikGotoXmlTool. Such feature allows to declare any
search engine using a XML format as result. The related properties are:
label
the text displayed in the Go-To dialog
url-format
the parametrized address of the query, in the spirit of C printf format, with a single "%s" field
(replaced by the query string)
lat-path
XML path of the latitude (eg. /root/parent/elem)
lat-attr (optional)
name of the attribute (of previous element) containing the latitude
lon-path
XML path of the longitude (eg. /root/parent/elem)
lon-attr (optional)
name of the attribute (of previous element) containing the longiude
As a facility (or readability) it is possible to set both path and attribute name in a single property,
like an XPath expression. To do so, simply set both info in lat-path (or lon-path) in the following
format: /root/parent/elem@attribute.
External tools. It is possible to add new external tools. The file is ~/.viking/external_tools.xml. An
example of the file in the distribution doc/examples/external_tools.xml. The VikWebtoolCenter allows to
declare any Webtool using a logic based on center coordinates and zoom level value. The related
properties are:
label
the text displayed in the menu entry
url
the parametrized URL to open, in the spirit of C printf format, with 2 "%s" and a "%d" fields for X,
Y and Z (zoom level) (eg. "http://hostname/?lat=%s&lon=%s&zoom=%d")
The VikWebtoolBounds allows to declare any Webtool using a logic based on bounds coordinates. The
related properties are:
label
the text displayed in the menu entry
url
the parametrized address of the tile, in the spirit of C printf format, with 4 "%s" fields for left,
right, bottom and top (eg. "http://hostname:8111/load_and_zoom?left=%s&right=%s&bottom=%s&top=%s")
Remote File Datasources. It is possible to add web references expected to return a file which can then be
opened directly or converted via GPSBabel. The file is ~/.viking/datasources.xml. An example of the
file is in the source distribution doc/examples/datasources.xml. The VikWebtoolDatasource allows to
declare any URL using logic based on coordinates. The related properties are:
label
the text displayed in the menu entry
url
the parametrized URL to open in the spirit of C printf format, with up to 7 "%s" values. e.g.
http://hostname/getfile?lat=%s&lon=%s
The order and meaning of these parameters is given by the url_format_code below
url_format_code
A string describing the parametrized URL substitution parameters, each character represents how to
translate each term.
B = Bottom of the current view i.e. minimum latitude
L = Left of the current view i.e. minimum longitude
T = Top of the current view i.e. maximum latitude
R = Right of the current view i.e. maximum longitude
A = center lAtitude of the current view
O = center lOngitude of the current view
Z = OSM Zoom value of the current view. See Zoom Levels[1]
S = A user specified input string requested from the user via a dialog box
Thus for the url example above then the format code should be AO
file_type
This value is passed on for the -i parameter in interfacing with GPSBabel.
If it is not defined then the returned file is interpreted internally as a GPX file.
Possible values such as 'kml', 'mapsource' etc.. can be used. See GPSBabel File Formats[3] for the
full list.
babel_filter_args
This value is passed on for the filter arguments interfacing with GPSBabel.
E.g. "-x nuketypes,routes" can be used to filter all routes from the results.
input_label
This value is used when requesting input from the user.
It is the label of the text input box.
FILES
~/.viking/maps.xml
File containing definition of map sources.
See previous section for details.
~/.viking/goto_tools.xml
File containing definition of "Go-to" services.
See previous section for details.
~/.viking/external_tools.xml
File containing definition of external tools.
See previous section for details.
~/.viking/datasources.xml
File containing definition of remote file datasources.
See previous section for details.
~/.viking/viking.prefs
Preferences for viking.
~/.viking/viking_layer_defaults.ini
Layer default values for viking.
~/.viking/viking.ini
Values for viking automatically saved between sessions.
Not generally intended to be manually edited.
However some finer control of default internal values can be set.
~/.viking/keys.rc
File containing short cut key accelerators.
This is in the standard GTK Accelerator map format.
~/.viking/cookies.txt
File hosting cookies used by viking.
~/.viking-maps/
Default location of the map cache of tiles downloaded or created by viking.
Extension files (maps.xml, goto_tools.xml, datasources.xml, external_tools.xml) are also searched in
/etc/viking and /usr/share/viking directories (or related in your system).
ENVIRONMENT
XDG_DATA_HOME
Optional directory to look for extension files (maps.xml, goto_tools.xml, external_tools.xml).
XDG_DATA_DIRS
Path used to change the directories scanned for extension files (maps.xml, goto_tools.xml,
external_tools.xml).
AUTHOR
This manual page was originally written by Ralf Meyer <ranfyy@gmail.com> for the Debian(TM) system (but
may be used by others). Permission is granted to copy, distribute and/or modify this document under the
terms of the GNU General Public License, Version 2 any later version published by the Free Software
Foundation.
On Debian systems, the complete text of the GNU General Public License can be found in
/usr/share/common-licenses/GPL.
COPYRIGHT
Copyright © 2007 Ralf Meyer
Copyright © 2010 Guilhem Bonnefille
Copyright © 2013 Rob Norris
NOTES
1. Zoom Levels
http://wiki.openstreetmap.org/wiki/Zoom_levels
2. ETag
http://en.wikipedia.org/wiki/HTTP_ETag
3. GPSBabel File Formats
http://www.gpsbabel.org/capabilities.html
Viking 2015-03-29 VIKING(1)