Re: Heuristic coefficient comparisons

2020-03-11 Thread Poutnik Fornntp
Hmm, AFAIK, it is a Google group, with optionally used mail list functionality, like some others, e.g the BRouter group. The mail list functionality had to be explicitly activated, not sure if on the group or the account level. Dne 12. března 2020 5:14:34 A Thompson napsal: Aaargh. I meant

Re: Heuristic coefficient comparisons

2020-03-11 Thread A Thompson
Aaargh. I meant overestimates not underestimates. Wouldn't it be better if this were a google group where posts could be edited, rather than a mailing list archived as google group? On Thursday, March 12, 2020 at 3:57:45 AM UTC, A Thompson wrote: > > As I understand it, the A* algorithm uses a

Re: Heuristic coefficient comparisons

2020-03-11 Thread A Thompson
As I understand it, the A* algorithm uses a heuristic that estimates the cost of the as-yet unexplored route from a point to the goal. If this function never underestimates the cost, then the optimal route is guaranteed to be found. If we only consider distance as the cost, then the bee-line

Re: Heuristic coefficient comparisons

2020-03-11 Thread 'ra' via OsmAnd
I am SHURE many first time users of osmand never use it again just for that simple reason (as they start with HC1.0) Am Mittwoch, 11. März 2020 20:32:55 UTC+1 schrieb Xavier: > > On Wed, Mar 11, 2020 at 01:46:19PM -0400, Greg Troxel wrote: > > if there is a second impatient person sitting

Re: Heuristic coefficient comparisons

2020-03-11 Thread 'Xavier' via OsmAnd
On Wed, Mar 11, 2020 at 01:46:19PM -0400, Greg Troxel wrote: What I take away is hc=1.2 does not ever result in any significant routing error (where error is failure to match 1.0), of course in the cases you tried. hc=1.3 is almost always non-erroneous, and the time saving from 1.5 to

Re: Heuristic coefficient comparisons (Was: Osmand routing calculation is very slow for long distance for many years)

2020-03-11 Thread Harry van der Wolf
And forgot to say: For that reason I switch off "use motorways" (and toll roads like in France) when planning a touristic route. Harry Op wo 11 mrt. 2020 om 20:01 schreef Harry van der Wolf : > > > Op wo 11 mrt. 2020 om 19:47 schreef 'ra' via OsmAnd < > osmand@googlegroups.com>: > >> up to 1

Re: Heuristic coefficient comparisons (Was: Osmand routing calculation is very slow for long distance for many years)

2020-03-11 Thread Harry van der Wolf
Op wo 11 mrt. 2020 om 19:47 schreef 'ra' via OsmAnd : > up to 1 or 2 years ago "gas saving"/"kraftstoffsparend" was called > "shortest" - I hope it actually is the same. I love it, not for gas saving, > but to go along small roads I would never see else. I once travelled like > that venice >

Re: Heuristic coefficient comparisons (Was: Osmand routing calculation is very slow for long distance for many years)

2020-03-11 Thread 'ra' via OsmAnd
up to 1 or 2 years ago "gas saving"/"kraftstoffsparend" was called "shortest" - I hope it actually is the same. I love it, not for gas saving, but to go along small roads I would never see else. I once travelled like that venice > berlin, very nice, if you take the time. or you quit the

Re: Video tutorial: using the profiles

2020-03-11 Thread Bart Eisenberg
Thanks! I'll try it. On Wed, Mar 11, 2020 at 10:49 AM Harry van der Wolf wrote: > > > Op wo 11 mrt. 2020 om 17:07 schreef Bart Eisenberg < > barteisenb...@gmail.com>: > >> I've experimented with the Measure distance feature, but never really >> used it for navigation--so I've not mentioned it

Re: Video tutorial: using the profiles

2020-03-11 Thread Harry van der Wolf
Op wo 11 mrt. 2020 om 17:07 schreef Bart Eisenberg : > I've experimented with the Measure distance feature, but never really used > it for navigation--so I've not mentioned it in a video. But I'm > interested: what do you see as its main uses and advantages? > > > It used to be just what its

Re: Heuristic coefficient comparisons

2020-03-11 Thread Greg Troxel
What I take away is hc=1.2 does not ever result in any significant routing error (where error is failure to match 1.0), of course in the cases you tried. hc=1.3 is almost always non-erroneous, and the time saving from 1.5 to 1.3 is never important I don't 100% follow the "need 1.2 to

Re: Heuristic coefficient comparisons (Was: Osmand routing calculation is very slow for long distance for many years)

2020-03-11 Thread Harry van der Wolf
The two routes (Fastest Route) that did have differences between an hc=1.2 and an hc=1.5 I did again with an hc=1.3 heuristic coefficient distance (calculated) time (hours minutes) calculation time minutes/seconds) Remarks Zwolle, Nl - Valkenburg, Nl last part smaller roads hc=1.0 239km 2h24m 36s

Re: Video tutorial: using the profiles

2020-03-11 Thread Bart Eisenberg
Thanks for that explanation. Is the new Direct-to-point navigation type (see https://osmand.net/blog/osmand-3-6-released), which the blog says is for marine use, also for circumventing barriers? What are the advantages of each? On Tuesday, March 10, 2020 at 11:25:07 PM UTC-7, danilo.baggini

Re: Video tutorial: using the profiles

2020-03-11 Thread Bart Eisenberg
I've experimented with the Measure distance feature, but never really used it for navigation--so I've not mentioned it in a video. But I'm interested: what do you see as its main uses and advantages? On Wednesday, March 11, 2020 at 1:56:23 AM UTC-7, Harry van der Wolf wrote: > > > > Op di 10

Re: Video tutorial: using the profiles

2020-03-11 Thread Bart Eisenberg
>@danilo.baggini Yes make a lot of sense for a boat. Thanks for that explanation. Is the new Direct-to-point navigation type (see https://osmand.net/blog/osmand-3-6-released), which the blog says is for marine use, also for circumventing barriers? What are the advantages of each? >@Harry:

Re: Heuristic coefficient comparisons

2020-03-11 Thread Stefan Monnier
> The big problem (as I see it) is that OsmAnd can't calculate long routes. > The answer is: "You have to add waypoints", and that is also what OsmAnd > suggests. Reminds me that I wonder if OsmAnd (or other routers) use some form of "planning": rather than do a recursive search from start to

Re: Heuristic coefficient comparisons (Was: Osmand routing calculation is very slow for long distance for many years)

2020-03-11 Thread Harry van der Wolf
Op wo 11 mrt. 2020 om 14:25 schreef 'ra' via OsmAnd : > superb, harry! was that done with setting FASTEST route or ENERGY SAVING? > without being able to award you ANY price (besides a beer to be picked up > here ;-) I would so very much like to see THESE very interesting > differences. and to

Re: Video tutorial: using the profiles

2020-03-11 Thread Helmut Jarausch
Sorry, it should be P1 - > D2 - > D1 - > P2 Helmut Jarausch schrieb am Mi., 11. März 2020, 12:29: > Here is a problem which I can't solve and which is related to straight > line navigation. > You notice a distant fire and you want to find where it is located. > On my old Garmin device there is

Re: Heuristic coefficient comparisons (Was: Osmand routing calculation is very slow for long distance for many years)

2020-03-11 Thread 'ra' via OsmAnd
superb, harry! was that done with setting FASTEST route or ENERGY SAVING? without being able to award you ANY price (besides a beer to be picked up here ;-) I would so very much like to see THESE very interesting differences. and to the above with the added setting AVOID HIGHWAYS - we all

Heuristic coefficient comparisons (Was: Osmand routing calculation is very slow for long distance for many years)

2020-03-11 Thread Harry van der Wolf
This is a spin-off of the original topic. I just did a number of route calculations for the different heuristic coefficients being hc=1.0 (default OsmAnd), hc=1.2 and hc=1.5 I took the routing.xml, copied the car routing profile out of it and made my own routing.xml (the earlier mentioned

Re: Video tutorial: using the profiles

2020-03-11 Thread Helmut Jarausch
Here is a problem which I can't solve and which is related to straight line navigation. You notice a distant fire and you want to find where it is located. On my old Garmin device there is a feature called Sight'N Go. One aims at the distant object and presses Enter. Then one can create a distant

Re: Video tutorial: using the profiles

2020-03-11 Thread Eugene zmeu
For each segment - 3.7 On Wednesday, March 11, 2020 at 12:16:01 PM UTC+3, Harry van der Wolf wrote: > > > > Op wo 11 mrt. 2020 om 10:08 schreef Eugene zmeu >: > >> We plan to improve Measure Distance tool ( >> https://github.com/osmandapp/Osmand/issues/7751) and add this tool for >> iOS version

Re: Video tutorial: using the profiles

2020-03-11 Thread Harry van der Wolf
Op wo 11 mrt. 2020 om 10:08 schreef Eugene zmeu : > We plan to improve Measure Distance tool ( > https://github.com/osmandapp/Osmand/issues/7751) and add this tool for > iOS version soon. > > Nice. The different navigation types can already be used in 3.6.3 on Android. Harry -- You received

Re: Video tutorial: using the profiles

2020-03-11 Thread Eugene zmeu
We plan to improve Measure Distance tool (https://github.com/osmandapp/Osmand/issues/7751) and add this tool for iOS version soon. On Wednesday, March 11, 2020 at 11:56:23 AM UTC+3, Harry van der Wolf wrote: > > > > Op di 10 mrt. 2020 om 16:30 schreef Bart Eisenberg >: > >> >> I'm interested,

Re: Video tutorial: using the profiles

2020-03-11 Thread Harry van der Wolf
Op di 10 mrt. 2020 om 16:30 schreef Bart Eisenberg : > > I'm interested, long term, in doing some videos beyond OsmAnd and would > appreciate your thoughts. > Still focusing on OsmAnd: You created the "Creating, previewing and navigating hiking routes with OsmAnd

Re: Video tutorial: using the profiles

2020-03-11 Thread danilo.baggini
Yes make a lot of sense for a boat. I will explain:You define a route, a straighr line to the destination, but there is an island and the boat obviously MUST avoid the island, there is fog, a lateral current shift the boat from original route.1 the navigation sistem recalculate a new route ro