GTrek II User Manual page 48

controls the granularity of the data. A higher value will result in less data, a
lower value will result in more data with better resolution. However
when exporting data to Google Earth with a smoothing value of 1, if there is a
large record count, it may cause the tours to be less than smooth unless you
have a very high performance PC and graphics card to match. This is not a
limitation of GTrek but of your PC. Google Maps can't handle large quantities of
data points. The actual number depends on what other data is included but
30,000 points should be a rough rule.
Select Track on ground for earth based routes or Track not on ground for
airborne tracks.
It has been noticed that some Google Earth images are not as accurately placed as one may expect.
If you experience this it can be corrected here. Measure the error in Google Earth with the Measure
tool, export your data again but this time with the corrections. The alterations are measured in meters,
a positive correction will move the trace in a northerly or westerly direction.
The Export Data Types is only displayed when exporting to Google Earth from the GTrek-Track
application. Export Standard route is the normal option. Selecting Export Smart Route will create
an extra data folder when viewed in Google Earth. See below.
The Google Earth program will be started
automatically. A copy of the displayed data points
will then be exported into the program and
displayed.
Returning to the GTrek program and loading another
route which is then sent to Google Earth™ (which is
still running) will display both tracks simultaneously.
This can then be repeated as required.
Google Earth provides extensive help files and
tutorials accessible form the Help Menu.
To use the Tour function double click on the path
Segment and click the run button to start the tour.
Use the Play control panel to control the
animation.
Tour options can be accessed from the Tools->options menu. Select the Tour tab and select the
options required, an example is below.
© GTrek Ltd. 2013 Page 47 of 62 Version 5.4.0