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Topics - Andrew Heard

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Troubles & Questions / Can slope filtering be improved?
« on: November 22, 2017, 11:13:09 »
Our hard working friend @0709 has created a very interesting and insightful test track to expose some current shortcomings with Locus slope filtering. What it shows is a smearing of track slope resulting a deceptively lower % at places where the slope is changing. Because SRTM elevation data is only every 30 x 40 metres it may not be possible to improve the situation much but I thought I’d ask…

Does this really matter? Well say there is a short sharp upcoming hill, say +20% slope, but only for 300 metres. Locus may only show this tortuous climb as +10%.

As shown here in Garmin Basecamp (also similar in Gps Visualizer) the attached test track has precise transitions
from 0% to 25%

Basecamp displays the slope accurately as 0%, +25% and -25%.

Locus on the other hand has quite aggressive filtering. The first +25% ‘hill’ starts at exactly 1.9km but the Locus chart shows the slope slowing increasing at 1.5km and only reaches the proper +25% at 2.3km.

If the track style is set to manual slope coloring -25% to +25% you would expect the color to be green from 0km to 1.9km then dark red/ brown after 1.9km. But instead the color starts changing thru various shades over a distance of 500 metres, starting before the hill even begins:

One real-world shortcoming is when a steep slope is less than 500m long. For example below the 25% slope is 200m long, then flat again. Locus calculates the slope as only 15%. And the track color is pale green/ orange for only 100m.

ensure settings > tap on track: popup, not screen

tap on track > track info > tap on greater than > menu popup > tap on Show on elevation chart > 1st tab of track info is displayed and chart tab should then be selected/ chart displayed, but isn't.

I normally set chart X axis to distance, but today needed to accurately measure time stopped (3 places). To my surprise these times @ 78, 106 and 281 minutes show non-zero speed! All 3 times the line is perfectly straight over periods of many minutes (5, 14, 4 minutes respectively), clearly unlikely for a cyclist of my ability. It appears the speed at beginning of the stop is displayed as last non-zero speed, and straight line is then drawn to first non-zero speed once riding again.

Black vertical lines show period while speed should be 0km/h:

Troubles & Questions / Another offline address not found
« on: August 17, 2017, 06:11:43 »
Offline address search > South Australia > city:Adelaide > street:"shearwater drive" is not found
map: Oceania/ Australia/ south_australia.osm.db
I bought the latest version for confirmation just in case, but no change: 2017/07/22

lat/lon and street clearly shown in screen cap below:

other search results are valid:

Troubles & Questions / No voice during navigation simulation
« on: October 31, 2016, 01:22:03 »
I have noticed a difference in navigation simulation operation between me and 0709. See - Willy has GPS turned off - navigation simulation - and TTS voice (beeps) are correctly heard as each waypoint is approached.

But when I perform the exact same with his supplied track and nav_audio files, no TTS voice is heard. If instead I use a GPS simulator eg. Lockito each waypoint is correctly announced, same as 0709.

So a question with my setup, why should navigation announcement occur with "proper" GPS (GPS icon green) but not with GPS simulation (GPS disabled, dragging map)? Thanks for any advise.

Observation: Locus will (sometimes) start in guiding mode (ignores the first waypoint/ navigation command) but with the same track other times starts correctly in navigation mode (displays distance to first navigation command). It is not dependent on whether I "Add new route" in Locus or use To/From quick-point BRouter method.

With a very simple track Locus starts 100% reliably in navigation mode.

I have also found a workaround - while guiding then tapping "Recalculate" Locus then always goes into navigation mode and displays the next waypoint (navigation command if any).

I don't know whether this applies more widely than with using BRouter as a navigation source because I only use BRouter. I hadn't experienced this problem before BRouter 1.4.x, but then again I haven't used navigation for a few months.

I recently installed BlueStacks so I can use Locus Pro with Windows. It worked very nicely, easy to setup but I uninstalled when it started asking for a monthly subscription fee or having to "rate" some silly game apps. So I am now trying Genymotion (free/ private). Lots more work to set up, more focus towards developers, and sadly not working properly yet for Locus. I managed to install Google Play Services and I've been able to install other apps OK. But when I run Locus Pro 3.12.2 and get the once-off request to download the 5MB "additional data", and I click OK, I then get an error 1810. If I follow the link it goes to Locus online manual: main > manual > faq > libraries_at_start but no mention of 1810. I assume it is related to Google Play or Google Play Services, some Google API error code? but as I've said Genymotion seems to be working for other apps. Any thoughts? I can't find any references to "1810" in this forum. Thanks.

Free chat / forum problem
« on: May 06, 2015, 12:34:51 »
sorry for all the identical posts - each time I click "Post" I got this stupid error below

some special character in the post text? does it happen to anyone else?

Information / forum - helpdesk
« on: April 10, 2015, 01:19:58 »
It would be nice if Locus just had one "forum" instead of reading duplicate/ parallel discussions in two different "forums" - and I know was first. Maybe a phase out of this somehow, with everyone having to move to after certain date? seems better in all functionality respects.

I have only just come across this forum -
Up until now I thought all discussion had been at That's where I had created all my topics.
They appear to serve the same purpose.
What is the difference?

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