track editor that runs on Android tablets, and it is now available for beta test on the Google Play app store
Google Play says its not compatible with my phone (Moto G with Android
5.1), any reason for that?
Looks like a useful app, I would like to try it out.
Have you implemented track adjustment tools, i.e. a way to drag the
track through points where the map tells you that it had to pass, and
the in rubber band fashion adjust all the track points between
junction/fix points?
I wrote track reduction/optimization code a long time ago, i.e. even
before the end of Selective Availability when track points could be up
to 100 m off, but the error was random and slowly changing.
Have you implemented track adjustment tools, i.e. a way to drag the
track through points where the map tells you that it had to pass, and
the in rubber band fashion adjust all the track points between
junction/fix points?
Terje Mathisen wrote:
I wrote track reduction/optimization code a long time ago, i.e.
even before the end of Selective Availability when track points
could be up to 100 m off, but the error was random and slowly
changing.
I wrote the reduction and averaging code some 10 years ago, but I did
not use it a lot because it was not integrated with the track editing
tools I was using.
Have you implemented track adjustment tools, i.e. a way to drag
the track through points where the map tells you that it had to
pass, and the in rubber band fashion adjust all the track points
between junction/fix points?
You can force the map to pass through particular points. (Not by
dragging, though, because that doesn't work well on a touchscreen.)
There is no automatic adjustment of intermediate points, however.
What you can do is manually eliminate a series of intermediate noise
points by connecting two good points.
I have been doing my testing on some noisy tracks, and, although this
is inherently a tedious task, I found I was able to clean up the
garbage fairly efficiently. And, if there are multiple tracks, I've
found good results from averaging the tracks, after trimming off the
worst of the noise.
Lew Lasher
I have written a track editor that runs on Android tablets, and it is
now available for beta test on the Google Play app store at:
https://play.google.com/apps/testing/com.lewlasher.trackEditor
GPX Track Editor is similar in functionality, as a first
approximation, to other track editors such as GPS TrackMaker, which I
have been using for years on the Windows platform, primarily to make
maps of hiking and cross-country ski trails.
The main purpose of GPX Track Editor is to help the user efficiently
clean up data gathered in the field. It includes tools for track
reduction and averaging, and it is easy to visually assess the
results of these tools before accepting the results. Tracks are
layered on a Google Map display. As the name suggests, the editor
reads and writes (only, currently) GPX files.
Because of my interest in mapping trail networks, the tool makes it
easy to create tracks that reflect the network "topology" by
including junction points in each track. For example, when reducing
a track, there is an option to protect such junction points from
being reduced out of existence.
Documentation for the map is contained within the app, in
(hyperlinked) help messages.
Lew Lasher Cambridge, Massachusetts
track editor that runs on Android tablets, and it is now available for beta test on the Google Play app store
And now it is generally available on Google Play: just search for "GPX Track Editor".
Lew Lasher
Cambridge, Massachusetts
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