[mkgmap-dev] finding out more about the size taken by elements in generated map

Fri Jan 28 10:48:53 GMT 2022

Thank you, Ticker. I was able to run this program w/o issues even on Linux
(via wine). Statistics tab gives quite a shallow view, it is not able to
answer questions like:

 - am I saving any space if I don't include "name" in the point
(restaurants without name)? In other words: how much data is used for
labels or other attributes. Does it make any sense to use shorter labels or
group them (pizza foo and pizza bar becomes "pizza" - will it be reused?)
 - How many kBs is taken by 50000 footways or 1000 polylines. The count
itself is not really helpful
- Is there any padding involved so it makes sense to make labels shorter
just "enough" to not waste a single byte
- Other statistics - data cannot be exported easily (even via clipboard)

That means it's still going to be a lot of trial & error (if I do this - am
I getting a smaller output and by how much?).

On Thu, Jan 27, 2022 at 4:36 PM Ticker Berkin <rwb-mkgmap at jagit.co.uk>
wrote:

> Hi Jose
>
> GPSMapEdit from
>
> https://www.geopainting.com/
>
> can tell you some of this. The free version should do; install it and
> open gmapsupp.img or an individual tile. Then look at Map Properties >
> Statistics tab.
>
> Ticker
>
> On Thu, 2022-01-27 at 15:31 +0100, jose1711 wrote:
> > Hello,
> > can someone recommend a way how I can learn more about what the
> > detailed statistics in respect to the byte size of each element in the
> > map generated by mkgmap? What I am looking for is something like:
> > - lines: 3.2 MB
> >   - road_class 0: 1.3 MB
> >   - road_class 1: 1.2 MB
> >   - road_class 2: 0.3 MB
> >   ..
> > - points: 1.0 MB
> >   - symbol 0x2c04: 0.3 MB
> >   - symbol 0x4c00: 0.2 MB
> > Not sure if it makes any sense but the rationale behind is having an
> > tool that would provide some hints as to which map details can be
> > sacrificed when trying to cover the largest area of the map.
> > Thanks,
> > jose
> > _______________________________________________
> > mkgmap-dev mailing list
> > mkgmap-dev at lists.mkgmap.org.uk
> > https://www.mkgmap.org.uk/mailman/listinfo/mkgmap-dev
>
>
> _______________________________________________
> mkgmap-dev mailing list
> mkgmap-dev at lists.mkgmap.org.uk
> https://www.mkgmap.org.uk/mailman/listinfo/mkgmap-dev
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://www.mkgmap.org.uk/pipermail/mkgmap-dev/attachments/20220128/964f2bba/attachment.html>