[mkgmap-dev] Fwd: resolution and zoom levels in style files

Thu Feb 25 12:04:08 GMT 2010

Hi, I'm forwarding this mail that ended up at the bounce address rather 
than going to the list.

-------- Original Message --------
Subject: resolution and zoom levels in style files
Date: Thu, 25 Feb 2010 03:43:52 +0100
From: Daniela Duerbeck <daniela.duerbeck at gmx.de>
Reply-To: daniela.duerbeck at gmx.de
Organisation: GMX
To: mkgmap-dev-bounces at lists.mkgmap.org.uk

Hi All!

In the instructions to styles I find that there are 24 zoom levels and 
24 is the "most zoomed in".
But when I count, I find 27 zoom levels on my Etrex Legend HCx.
27: 5m, 26: 8m, 25: 12m, 24: 20m, 23: 30m, 22: 50m, 21: 80m, 20: 120m,
19: 200m, 18: 300m, 17: 500m, 16: 800m, 15: 1.2km,
14: 2km, 13: 3km, 12: 5km, 11: 8km, 10: 12km, 9: 20km, 8: 30km, 7: 50km,
6: 80km, 5: 120km, 4: 200km, 3: 300km, 2: 500km, 1:800km.

Now I would like to know which resolution I should use to make e.g. 
residential roads appear just at 300 meters.
At 500 meters the map gets a bit confusing with all these little streets.

At resolution 23 they appear at 120m, with 22 already at 500m.

Are there other points to change?

Apologies for this beginner's question, but I found no answer. :-(

Thanks a lot in advance,
Dani