User manual

Glossary
2D..........................Two-dimensional. A printed Ordnance Survey map is two-
dimensional, as it is a flat representation of the earth.
3D..........................Three-dimensional. ViewRanger’s panoramas make use of
3D data, because they also take account of height.
Cross track error........The shortest perpendicular distance between your location
and the planned route. Abbreviated to XTE.
Feature...................In ViewRanger a feature is an area such as a town, lake, hill
or wood. These are provided in the licensed POI sets and
are shown on the panorama.
GPS........................Global positioning system. A network of satellites orbits the
earth. A GPS receiver receives signals from some of these
and uses those signals to accurately determine its location.
The more satellites the GPS receiver gets signals from the
more accurate the location reading.
Grid north................Grid north is the upward direction of the vertical grid lines
printed on the map. It is slightly different to magnetic north.
Location bar............The small grey bar near the top of the screen that reports
altitude, location and heading.
Magnetic north.........The direction a magnetic compass points. It slowly varies
relative to the map over time. You can set the magnetic
variation value in Settings > UI > Magnetic variation.
Memory...................Most phones have two types of memory. The phone’s
internal memory is fast and all programs running on the
phone use it. Some programs are installed in this memory
too. ViewRanger typically uses 3Mb of memory, though this
varies with the view radius. Applications such as the camera
use a similar amount briefly while taking a large photo.
The second type of memory is the memory-card. This is
relatively cheap storage and comes in much larger sizes.
Treat the main memory as precious and store and install as
much as you can on memory cards.
POI, Point-of-interest.A point-of-interest is a single point on the map, identified
with an icon. It may have a description, category and
creation time. You can associate images and notes with it.
Points of interest are provided in licensed POI sets, but you
can create your own POIs using Options > Create > Create
POI in the map view. You can also import POIs from other
applications via a GPX or LOC file.
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