search

GoogleCodeArchive / gccv2

Automatically exported from code.google.com/p/gccv2
0 stars 0 forks source link

My average speed shows as higher than my maximum speed? #7

Open GoogleCodeExporter opened 9 years ago

GoogleCodeExporter commented 9 years ago 
What steps will reproduce the problem?
1. Used to track walking distances mainly, regular use.
2. Max shows as 4.3 average shows as 6.2 (mph).

What is the expected output? What do you see instead?
Max can not be less than average. Are the two fields crossed?

What version of the product are you using? On what operating system?
3.92

Please provide any additional information below.
Excellent product. Most useful software I've used on my PDA.
Many thanks
Harvey

Original issue reported on code.google.com by harvey.o...@dsl.pipex.com on 7 Apr 2009 at 8:13

GoogleCodeExporter commented 9 years ago 
I've had a similar behaviour when the "Exclude stop time" option is selected.

In my case, the GPS connection is toggling on/off every second, so when the 
average
speed is calculated, half the time is considered excluded time (since that's the
default when the position is invalid), creating a higher than usual average 
speed.

I have a possible code fix for that, a two line of code change to Form1.cs

That change is untested (I couldn't even check that it compiles).

Original comment by rdketc...@gmail.com on 20 Apr 2009 at 6:30

Attachments:

GoogleCodeExporter commented 9 years ago 
I ran into this on 3.114  rdketchup, if you are still around, can you post a 
diff of
your fix.  Form1.cs has changed a lot since you posted.

Anybody working on this one?  I could take a look at it.

Original comment by stephen....@gmail.com on 20 Aug 2009 at 5:48

GoogleCodeExporter commented 9 years ago 
should be solved in version 4.2 (invalid speed data treated as stop).
If you use start/stop mode or your GPS signal is not stable for any reason the
position can "jump around" more than you actually move. The total distance will 
be
higher than you actually moved. The average speed is computed as total distance 
/
total (or ex) time. Therefore the average speed can be higher on unstable 
signal.
There is an option to "Drop first x points" to get a better signal. Also there 
is a
new (experimental) option "AVG" to average the data.

Original comment by kmb...@gmx.de on 8 May 2010 at 8:26