gmane.comp.gis.monav.devel

Routing with terrain data

Robert Voigt — 2012-12-23T09:10:50

I'd like to have terrain data taken into account for routing. I've read the 
code in the SRTM branch. I don't really understand the function in 
SpeedProfile::getModifiedSpeed(). Christian, could you explain a bit the 
parameters downDeadZone and upDeadzone? MaxDown and maxUp are obvious, and 
upHalfSpeed is probably the incline where the speed is half the speed of a 
flat way.

Re: Further development

Christian Vetter — 2012-07-25T21:35:04

Hi,

On Wed, Jul 25, 2012 at 10:08 PM, Robert Voigt <robert.voigt< at >gmx.de> wrote:

That's great. I'm kind-of disappointed with Nokia to discontinue
supporting Qt for the new platform. Luckily Qt seems to work quite
well on Android based phones also *g*.


No, it is about handling map packages downloads and updates. However,
the Mapnik plugin is basically just a bunch of pre-rendered tiles, and
very similar to downloading tiles. As long as we would offer the
packages for download it would be fine.

Best regards,

Christian

Re: Further development

Robert Voigt — 2012-07-25T20:08:50

Yes, I want to continue working on it. Monav is the only software I've 
found that has speech output and gives me complete control over the map 
parameters for routing. I'm using it for mountain biking and hiking. 

I'm using it on Maemo, still using the N900. I'll buy a handset with Jolla 
OS or, as fallback, Tizen when it is available. So staying with Qt friendly 
platforms. I can do some porting if necessary.

Does the mapdl branch have functionality to download tiles of an area for 
the OSM renderer for offline use? This would be very useful for areas 
without cellular coverage and abroad to avoid data roaming. I'll be in this 
situation myself soon.

Re: Further development

Christian Vetter — 2012-07-24T21:24:57

Hi,

I've looked over everything and looks great so far!

I'll merge those changes in the main repo, but not yet into default,
since they are based on the permaroute branch, which IMO is not yet
ready to be merged ( the interface changes scale badly on some screen
configurations ).

Since Christoph isn't currently working on it anymore, I'll start
reviewing the branch next week and making it ready for a merge to
default. Together with the automated map download branch this should
justify releasing a new version.

Do you want to continue working on MoNav? What areas are you most
interested in? I guess you are using it on Maemo ( as opposed to
Andriod, or Harmattan-N9 )?

Best regards,

Christian

On Tue, Jul 24, 2012 at 8:36 AM, Christian Vetter
<veaac.fdirct< at >gmail.com> wrote:

Re: Further development

Christian Vetter — 2012-07-24T06:36:22

Hi,

I'll have a look at it this evening

Best regards,

Christian Vetter

On Mon, Jul 23, 2012 at 8:45 PM, Robert Voigt <robert.voigt< at >gmx.de> wrote:

Re: Further development

Ch. Eckert — 2012-07-23T19:15:24

Hi Robert,


due to a hard drive crash I've currently no Maemo SDK available and not 
working on it actively. I guess I'll by an Android Device later this 
year (suggestions for a HTC device with decent GPS are welcome), but 
this will probalby happen not before autumn. My further interest depends 
whether I'll get MoNav running on Android then.

Re: Further development

Christoph Eckert — 2012-07-23T19:19:54

Hi Robert,


due to a hard drive crash I've currently no Maemo SDK available and not 
working on it actively. I guess I'll by an Android Device later this 
year (suggestions for a HTC device with decent GPS are welcome), but 
this will probalby happen not before autumn. My further interest depends 
whether I'll get MoNav running on Android then.

Further development

Robert Voigt — 2012-07-23T18:45:40

I have done some enhancements, mainly to speech instructions, in my clone 
http://code.google.com/r/robertvoigt-monav. I'm using it myself. Is there 
anybody else interested in merging this and do something for the future of 
monav?

Re: More speech output

Christian Vetter — 2012-03-22T08:51:23

Hi,

Sorry for the very long delay in answering, I head several deadlines
at work that required some effort :-D

Due to the structure of MoNav's routing algorithm we do not have the
information about adjacent streets ( the main speed advantage of the
algorithm comes from the fact, that we only have to look at about 400
roads for a cross-Europe route ).

I can see how this can be important for generating turn instructions.
So far I could think of two solutions for this:
 - Have a separate data storage to query this information ( maybe even
a plugin to generate maneuvers )
 - Pre-calculate maneuvers in the routing plugin. E.g. each edge in
the routing graph represents a series of streets and could be assigned
one or more maneuvers.

Another thing that could be problematic with maneuver generation:
 - Complex junctions ( junctions consisting of several OSM nodes )
 - Streets that are not allowed in the current OSM profile should
still influence maneuver instructions?

Regarding the routing_ files:
 Those files

Re: More speech output

2012-03-13T15:37:08

Hi Christoph,

Thanks for your reply.



< at > Christian:
If you could find a little time to clarify whether it is possible to find 
all branches to a specific node with the help of your preprocessed data it 
would be very nice. (And if - how to)
But no hurry! I will have a look into this discussion from time to time. 
And anyhow for the rest of the week I will be off for ski touring :-)

What I have tried so far is to grab x y values out of (Andorra) places.pqdb 
and ways.motorway.pqdb which lay within the min/max values as in MoNav.ini.
The x y values I calculated according to tile-write.cpp line 90ff   
(Way::init(FILE *fp)).
But it didn't happen to get meaningful values at all. (Byte-order issue?)

For the files in the routing_....   folders I couldn't find any hint about 
their structure.

Thanks in advance,
Best regards,
Bernd

Re: More speech output

Christoph Eckert — 2012-03-09T19:51:50

Hi Bernd,


I guess only Christian can answer such questions, but he's quite busy ATM.

Re: More speech output

2012-03-03T09:35:10

Hi Christoph,

thanks a lot for your reply.

possible to get the 
neighbouring nodes of branches with their coresponding coordinates to a 
specific node 
identified through the coordinates of the next point on my route?

In my imagination it should be possible as you use this data for routing.

If it is possible I would be very grateful if you could give me a hint 
where to find 
information on how to access and interpret the files of the preprocessed 
data, to 
be able to have a look into it.

I already had a look into the repositry but couldn't identify myself where 
the 
preprocessed files are read and how they are structured.

It would be very handy in size as well if I could work with the 
preprocessed data files 
as I would only need the ones for routing.

Thank you very much.
Best,
Bernd

Re: More speech output

Christoph Eckert — 2012-03-02T19:59:43

Hi Bernd,



I have been working on this, yes.


The problem you mention is hard to cope with. Currently MoNav provides 
an angle which can be used for speech output, including the issue you 
mention. On such crossings, it will always be necessary to switch on the 
device and have a look at the screen.


Compilation for Android is not straightforward. I got a Hello world 
application running. MoNav compiled as well, but crashes during startup.

Alternatively you could try to get a N900 (maybe s/h). The code that 
does speech output just needs minor adjustment work, but is not capable 
of generating professional grade navigation instructions.

Alternatively you could try OsmAnd. Its routing isn't that superb than 
the one of MoNav, and speech output AFAIR is only available as an 
experimental build. But in contrary to MoNav, it's a native Andoid 
application and under active development.

A N900, however, is much more handy. The summer will show whether I'll 
keep or replace it by a Defy+.

Re: More speech output

Bernd Battes — 2012-03-02T08:58:09

Hello Christoph.
Hello Christian,

just now, I am searching the net for the possibility to make voice
navigation in a precise way through offline access to OSM data while
navigating along a route to get more infos e.g. about the context of a
junction heading to.

While searching, I first came across MoNav which I find is a great
tool with its offline routing and rendering capabilities. (It's a pity
that it is so hard to compile on windows platform for use on android
as I can read in some posts).
And now I see, that you are even discussing speech output for MoNav as
well.

To explain my motivation to this writing I have to tell some
background.
I mainly use navigation on my cycle. And as my current device is a 7"
tablet it is hard to keep it charged while cycling and navigating.
Despite my dynamo hub charging system.
The screen with 1024*600 pixel consumes a lot, and in sunshine I don't
see anything but it eats even more power.
And as well climbing up hills takes much longer than heading them down
again. So l

Re: How to get Algeria offline map , Nokia n9

Ch. Eckert — 2012-02-28T20:57:14

Hi,


AFAIK MoNav serves as a backend router for Marble, so you should be able 
to select MoNav as the router for it. Check its settings, please.


The maps are based on
http://download.geofabrik.de/osm/africa/
where Algeria is missing. You can try to send a request to
Frederik Ramm <fred add remote dodd org>. In case he adds Algeria to the 
set, please let me know and I'll create the MoNav map.

How to get Algeria offline map , Nokia n9

Eyad Kalaji — 2012-02-23T02:01:20

Hello

i have two question pleasee ,
1st :  i use nokia n9 , for navigation i use Marble , i've installes
the MoNav app , but no thing change , how can i execute it ?

2nd, in the offline data i can't find Algeria map in Africa list ,
what can i do please ?

thanx

How to get Algeria offline map , Nokia n9

Eyad Kalaji — 2012-02-23T01:58:57

Hello

i have two question pleasee ,
1st :  i use nokia n9 , for navigation i use Marble , i've installes
the MoNav app , but no thing change , how can i execute it ?

2nd, in the offline data i can't find Algeria map in Africa list ,
what can i do please ?

thanx

Re: Re: Turning Restrictions

Maria Arias de Reyna — 2012-02-02T12:00:10

El Jueves, 2 de febrero de 2012, Christian Vetter escribió:

HI Christian,

Thank you very much for your answer. After reading carefully the papers, I 
understood much better what was the code, but was unable to fully run it.


Anyway, congratulations for the project and the research. It has been very 
helpful.


Regards,
María.

Re: Re: Turning Restrictions

Christian Vetter — 2012-02-02T11:55:09

Hi,

The turn cost branch is currently not working and-to-end, and was only
used to run benchmarks / sanity tests for this proof-of-concept /
prototype.

Therefore we do not support this branch at the moment ( and until a
proper version is reintegrated into default ), I am sorry to
disappoint you there.

We have skipped on this task so far, since turn restrictions are few
in OSM data and the changes would entail an increase in map data.

Best regards,

Christian

On Tue, Jan 31, 2012 at 3:31 AM, JohnK <johnthu< at >gmail.com> wrote:

Re: Turning Restrictions

JohnK — 2012-01-31T02:31:26


On 1月30日, 下午5时03分, Maria Arias de Reyna <mar...< at >emergya.com> wrote:

I am sorry. I don't know the exact procedure of Monav with turn cost.

Re: Re: Turning Restrictions

Maria Arias de Reyna — 2012-01-30T09:03:30

El Domingo, 29 de enero de 2012, JohnK escribió:

Hi John,


Thanks for your answer. Do you think that it does mean that the importer is 
skipping some step and is not reordering the nodes?


That makes total sense.

Thank you very much.