For speed optimalization of the 2-pass A* star compatible routing
algorithms of BRouter and OSMand ( as I understand the latter uses it now
too ), it is interesting to evaluate the route calculation time versus
heuristic coefficient value for the 1st pass.
At the first the time drops, because the 1st pass time becomes just small
fraction of the total time.
But it reaches the minimum and then it start to grow again, as the 1st
pass route becomes less and less optimal. Therefore the 2nd pass cutting
outs happens later then with low HR of the 1st pass.
For BRouter the time-optimal coefficient is quite high, typically
1.7-1.8, but it depends on region scenario and used profile. Cases having
in average higher road costfactors can afford higher coefficient and vice
versa.
For OSMAnd 2nd pass, it may depend on how exactly it is implemented, what
algorithm is used.
Dne 26. března 2020 7:35:10 Harry van der Wolf <hvdw...@gmail.com> napsal:
All,
please stop this.
I forgot to mention that I am also a (long-time) moderator of this mailing
group, mostly trying to remove spam as soon as it appears. Like Bart
mentions: we normally do not have these kind of arguments.
If this continues I might be tempted to remove the posts, of course
including my own posts, and block a user (temporarily?)
We need to be able to have discussions, also fierce discussions, but let's
do it in respect for each other, without personal counter-attacks.
Misunderstandings can easily arise due to all non-native english speakers
here (I am one of them).
But please stop now. Let's leave it at this and stay on topic.
Kind regards,
Harry
Op do 26 mrt. 2020 om 03:32 schreef Poutnik Fornntp <poutnik4n...@gmail.com>:
Well, Lodro, you like arguments. The others just react on your bait.
OSMAnd, Locus, BRouter serve different purposes
than Google Maps, Waze, TomTom etc.
Each group is superior to the other in what it is focused to. Speed is both
strength and weakness.
If your prefer the latter group, use it.
The first group has reasons not to follow.
Dne 25. března 2020 22:06:52 Lodro Gyamtso <lodrogyam...@gmail.com> napsal:
@Bart Eisenberg
I can say the same for you.
On Wednesday, March 25, 2020 at 10:49:16 PM UTC+2, Bart Eisenberg wrote:
@Lodro This forum has been that rare corner of the web where civility is
the norm. Please follow suit or find another forum.
On Wednesday, March 25, 2020 at 12:15:19 AM UTC-7, Lodro Gyamtso wrote:
this post is special for user "Harry van der Wolf"
who do you think that you are ? who gave you the right to say to other
people - Please test yourself before posting these "theories".
Is your ego and arrogance ? That's why i suggest to you "don't say to other
people what to do into their personal lives"
i am writing a post having experience of my devices or reading posts from
other users. I did exactly what you made, i write my thoughts as you did,
without judging other people. I use only what the others say, just to found
answers.
Using my old smartphone for a route inside the city of 60 Km, the results
time is over 1 minute for calculation. With my new smartphone for the same
route needs less of 20secs to draw the route. With all the navigation apps
i have mentions before, the route results is 1sec (instantaneously) for
both of my devices.
p.s
sorry for my english
On Tuesday, March 24, 2020 at 12:53:14 PM UTC+2, Harry van der Wolf wrote:
Op di 24 mrt. 2020 om 07:32 schreef Lodro Gyamtso <lodrog...@gmail.com>:
after the answer of user "Poutnik", we have another proof that the OSMAnd
and BRoute use slow (bad) technology.
Software like Here WeGO, Sygic, Tomtom Go, iGO, navigon, navitel, route 66,
copilot, mireo, etc , are far away from this low level apps (OSMAnd and
BRout). And all of this top companies has offline navigation apps. So, the
user "Episteme PROMENEUR" has right into his first post.
My opinion is - don't use osmand, locus, orux, brouter, for city
navigation. They are only for mountain use.
That is not true. Both OsmAnd and BRouter are excellent routers. OsmAnd is
slower on longer distances, but that can be tweaked.
OsmAnd is even the best in cities due to it's penalty system for traffic
lights and traffic bumps and the like.
If you calculate a route inside a city, the route might be the same, but
OsmAnds ETA is by far the most accurate even though TomTom uses their
"smart routing" where they collected statistical data on "heavy use" roads.
And sometimes OsmAnds route is different, exactly because it uses these
penalties. I personally did many test and especially in cities (!), OsmAnd
is by far the best when calculating the route AND the correct ETA. So
actually in cities I do use OsmAnd.
Please test yourself before posting these "theories".
I know less about BRouter, although I used it for cycling, and that was
excellent. So why "mountain use"?
Here WeGo is currently only a city navigation tool, so useless in my eyes
(unless it is builtin into your car navigation set).
Finally: There is not one single navigation app in the world that offers
the wide portfolio of functionality that OsmAnd does. Not one!
Harry
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