[OSM-dev] Proposal for new tiles at home lowzoom method

[80n]

I've now generated new lowzoom tiles from z8 to z11 for a bit of southern
England and the area around Paris.

http://www.informationfreeway.org/?lat=50.978160128899574&lon=-0.47549776570684626&user=80n&zoom=8&layers=0000F00BT

http://www.informationfreeway.org/?lat=48.358820794158916&lon=2.529262325668118&user=80n&zoom=8&layers=0000F00BT

The Paris tile was a worst-case scenario using the old lowzoom method, so I
thought it would be a good test case.

Comments please.
80n

On Jan 8, 2008 12:39 PM, 80n <80n80n at gmail.com> wrote:

> Folks
> I've been experimenting with a different method of generating lowzoom
> tiles for tiles at home.
>
> The approach I am taking is to use the old tile stitching method coupled
> with a separate place name layer.
>
> The tile stitching starts with a layer of z12 tiles that are the same as
> normal z12 tiles except the main roads are about 50% thicker and it there
> are no place names.  You can get a rough idea of what that will look like by
> looking at the the current lowzoom tiles for the US - most of it was
> rendered using the old stitching method before many place names had been
> added.
>
> I then propose a separate transparent layer for place names.  This
> potentially allows for multiple name layers for different scripts and
> languages.  I've heard some comments that  transparent layers are not a good
> solution - I'd be interested in understanding the pros and cons of doing
> this.  The alternative is to merge the transparent layer with the lowzoom
> tiles using Image Magick, which would achieve the same visual result but
> without the ability to dynamically switch the language.
>
> I've started doing some test renderings in the south of England, although
> there is not really enough there yet to get a good feel for what it would
> look like:
>
> http://www.informationfreeway.org/?lat=50.87948576831506&lon=-0.8263735442015004&user=80n&zoom=11&layers=0000F00BT
>
> At this stage I'd appreciate any comments or suggestions.
>
> 80n
>
>
>
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