Locus

Discussion in 'GPS 101 - Which GPS For Me' started by levain, Jun 26, 2014.

  1. 2whlin

    2whlin Been here awhile

    Joined:
    Jul 16, 2014
    Oddometer:
    361
    can someone refresh my memory on loading GPX file to Locus Pro? I have multiple tracks I created in Basecamp that I saved my Google Drive, but on my Locus Pro app, I can't access Google Drive. I don't see a login button and it's saying I have invalid credentials
  2. ohgood

    ohgood Just givver tha berries !!!

    Joined:
    Sep 21, 2010
    Oddometer:
    7,565
    Location:
    alabama
    you probably need to log out and back in again.

    Screenshot_2018-07-08-08-08-36.png

    as far as importing gpx/kml/kmz/etc files, you can just click on each one in your file explorer, select each in Google drive, or use the import dialogue in locus to navigate to their location and then import.

    I think what your having trouble with is Google drive, not locus, presently.

    you can always Bluetooth the files over to your phone, or WiFi direct them, or use transfer them, or email them, or copy to an sdcard, lots of ways to push files around.
  3. 2whlin

    2whlin Been here awhile

    Joined:
    Jul 16, 2014
    Oddometer:
    361
    so when I try to import to Locus, it not allowing me to save it, just display only.
  4. 2whlin

    2whlin Been here awhile

    Joined:
    Jul 16, 2014
    Oddometer:
    361
    never mind....fingered it out. Thanks!
    ohgood likes this.
  5. GCecchetto

    GCecchetto Long timer

    Joined:
    Jun 29, 2013
    Oddometer:
    2,678
    Location:
    Woodside CA
    Okay, hoping you Locus gurus can help me out. Did my first ride running Locus last night to test my new nav setup, didn't go as well as expected. Given how robust the customization features are in Locus, guess I just expected more from it in use compared to other apps I've used like Galileo. That said, it may be a settings thing that is causing the behavior I'm seeing. So, the two issues I'm hoping to sort out are:

    1) Map does not move smoothly when tracking. The map moves in small jerky movements. With all of the other apps I've used, the maps follow my movement very smoothly.
    2) When I stop, the map twitches around, constant small rotations, which would seem to indicate the positioning from the GPS isn't very accurate. Full disclosure, I'm using a Dual XGPS 160 external GPS with the Mock GPS Provider developer option running on my Samsung tab. I'm using the app Bluetooth GPS (recommended by Dual) to feed the GPS data to the apps. I know I can also set Locus directly to use the data from the XGPS, and am wondering if this might be preferred? The current scenario allows all apps requiring GPS to benefit from the Dual, so it seems like a better way to go, but I need the best performance with Locus, so I could deal with it if I have to go the other route.

    I'm planning to do a test with the XGPS mounted in a more open position looking straight up to see if that settles down the twitchy movement when stopped, but when I played with the location previously, the current location didn't seem to degrade the signal at all.
    IMG_1436.jpg

    Here's the XGPS 160 in the Mob Amor case.

    IMG_1427.jpg
  6. GCecchetto

    GCecchetto Long timer

    Joined:
    Jun 29, 2013
    Oddometer:
    2,678
    Location:
    Woodside CA
    Also, I have a bunch of unlocked Garmin topo maps, as well as Backroad Mapbooks topo maps of BC and Alberta. Curious if Locus can use them?
  7. SRTie4k

    SRTie4k Northeast Explorer

    Joined:
    May 11, 2009
    Oddometer:
    1,298
    Location:
    Nude Hampster
    Using hardware compass can cause the heading to jump around when stationary. You can change this to use GPS heading in settings, GPS and sensors. That should fix your jumpy heading while stationary.
  8. AugustFalcon

    AugustFalcon Long timer

    Joined:
    Dec 26, 2004
    Oddometer:
    1,180
    Location:
    Waterford, Connecticut U.S.A.
    I'm thinking that it doesn't move smoothly because the GPS location is only determined once a second. In order to have a cursor move smoothly the position reporting would need to be processed through an interpolater function. Or, your GPS would need to run at more than one hertz.

    Sent from my Moto Z (2) using Tapatalk
  9. GCecchetto

    GCecchetto Long timer

    Joined:
    Jun 29, 2013
    Oddometer:
    2,678
    Location:
    Woodside CA
    Great, I’ll give that a try.

    Thanks
  10. GCecchetto

    GCecchetto Long timer

    Joined:
    Jun 29, 2013
    Oddometer:
    2,678
    Location:
    Woodside CA
    The XGPS 160 is a 10hz gps, it does 10 points per second, which I don’t think Locus can even accept. If that’s the issue, it’s on the Locus side. If I remember correctly the default in Locus was 5 seconds, which I changed to 1. If it’s capable of using more than 1 point a second, I can try that. I highly doubt that’s the issue though as 1 point per second is all you get from any phone/tablet internal GPS and I’ve had plenty of the NAV app offerings run perfectly smoothly using the internal gps.
  11. ohgood

    ohgood Just givver tha berries !!!

    Joined:
    Sep 21, 2010
    Oddometer:
    7,565
    Location:
    alabama

    1 I don't remember if it's smooth or not, I'll have to watch next time

    2 set the locus Bluetooth manager to use your external GPS sensor. it should be very good if it's sampling 10x /second. the COMPASS will be jelly because your engine is running, set the locus compass stuff to automatic, so it's using the hardware compass when stopped but the gps direction above 2mph.

    I'll try stuff and answer better this evening
  12. GCecchetto

    GCecchetto Long timer

    Joined:
    Jun 29, 2013
    Oddometer:
    2,678
    Location:
    Woodside CA
    Awesome, thank you.

    Moved the XGPS 160 where it has a more open view of the sky.

    F2A19DC0-A434-4ED8-8650-CB7A65AC26A4.jpeg
    ohgood likes this.
  13. SRTie4k

    SRTie4k Northeast Explorer

    Joined:
    May 11, 2009
    Oddometer:
    1,298
    Location:
    Nude Hampster
    IIRC the map doesn't move smoothly because of the vector rendering engine. It's been asked about on the Locus forums and helpdesk before and the devs say that it cannot be fixed until the map engine (Mapsforge) is rewritten.
    AugustFalcon and ohgood like this.
  14. ohgood

    ohgood Just givver tha berries !!!

    Joined:
    Sep 21, 2010
    Oddometer:
    7,565
    Location:
    alabama

    I looked at it last night in the way home and yup, I was surprised it isn't buttery smooth like most other applications. I guess I really don't look at it much while I'm moving.
  15. ohgood

    ohgood Just givver tha berries !!!

    Joined:
    Sep 21, 2010
    Oddometer:
    7,565
    Location:
    alabama
    @GCecchetto oh, ya, that first position would probably be a bad place for the GPS receiver. under other electronics can prevent the signal because of the shielding in the other electronics. the GPS makers always say "clear view of the sky" to simplify things, but passing through flesh/organics is pretty easy.... passing through electronics can be much more difficult.
  16. SRTie4k

    SRTie4k Northeast Explorer

    Joined:
    May 11, 2009
    Oddometer:
    1,298
    Location:
    Nude Hampster
    Actually just looked into it, and it looks like GPS update interval is 1 second while vector map panning by hand is much faster and smoother. It looks like location updates are done based on GPS timing without any interpolation.

    I've submitted a ticket on Locus Helpdesk to suggestion GPS location update using interpolation as an idea. If any of you are Locus Helpdesk users, please vote if you like this idea.
    AugustFalcon and ohgood like this.
  17. ohgood

    ohgood Just givver tha berries !!!

    Joined:
    Sep 21, 2010
    Oddometer:
    7,565
    Location:
    alabama

    thanks, and yes you got my vote
  18. GCecchetto

    GCecchetto Long timer

    Joined:
    Jun 29, 2013
    Oddometer:
    2,678
    Location:
    Woodside CA
    Yea, I’m hoping in use it does improve the accuracy, but I did place the unit in that location and compared the signal strength, via the Dual app that shows the signal strength of each satellite, and it really didn’t affect it. That said, that was in the open in my driveway, and I’m sure it’s different on a tiny road plastered on the side of a mountain when the unit is also shaded by the terrain and/or pointing right into the hill.

    I don’t like the new location though as it partially obstructs the dash and is above the ignition and makes inserting and removing the key a pain in the ass.
  19. ohgood

    ohgood Just givver tha berries !!!

    Joined:
    Sep 21, 2010
    Oddometer:
    7,565
    Location:
    alabama

    accuracy should be fine, this track is all wooded/shaded and the worst accuracy is when I'm right next to rock cliffs an even then it's only as bad as +/- 6m

    the red area is the worst +/- 6 and the blue best +/- 3m

    Screenshot_2018-07-13-12-35-27.png
  20. cyberdos

    cyberdos Easy Bonus Loop

    Joined:
    Sep 2, 2005
    Oddometer:
    41,521
    Location:
    Queen Creek, AZ
    While I'm all for smooth operation, I wonder if that would place a lot more drain on the battery like Osmand does. Perhaps the less that optimal setting that Locus has is the reason why it doesn't suck as much power.

    :dunno
    AugustFalcon likes this.