[OSM-dev] [Mapnik-devel] reliefs madness

[Artem Pavlenko]

http://artem.dev.openstreetmap.org/files/srtm.jpg   - SRTM relief  -  
white-ish pixels are below sea level
http://artem.dev.openstreetmap.org/files/srtm_swbd.jpg  SRTM + SWBD  
mask shows where 'real' water is.

Looks promising.

On 9 Jan 2008, at 12:59, Jochen Topf wrote:

> On Wed, Jan 09, 2008 at 12:44:51PM +0000, Artem Pavlenko wrote:
>>> I think areas below sea level should just get the darkest green.  
>>> In most
>>> cases it is probably not necessary to distinguish the details.
>>>
>>
>> OK, below sea level is now corrected :
>> http://artem.dev.openstreetmap.org/files/reliefs/water.jpg
>> but there are still lots of water around. I guess this represents  
>> reality.
>
> But the water is not real. Look at the Google aerial images for that
> area and you'll see. Well, there is a lot of water in Holland, no
> question about that. But your relief gives the wrong impression,  
> because
> it looks like some kind of marsh land or so while in reality it is
> mostly dry with some canals in between.
>
> Maybe ignoring all water pixels if they have less than n sorrounding
> pixels with water or something like it.
>
> But it does look mmuch better now. Definitely good enough to be  
> "usable".
>
> Jochen
> -- 
> Jochen Topf  jochen at remote.org  http://www.remote.org/jochen/   
> +49-721-388298
>