[OSM-talk] Kosmos v1.3 - shaded relief

[Artem Pavlenko]

On 12 Jan 2008, at 10:14, Igor Brejc wrote:

> Artem Pavlenko wrote:
>>
>> I've tried latest Kosmos and it works fine, though a bit slow. Are  
>> you planning to release source?
> Are you referring to the slowness of generating reliefs or  
> generally? When generating reliefs the application first has to  
> download the DEM tiles from NASA FTP site and that may take a while.

Yes, I realized this :)
> But once the DEM is cached locally on your disk, it should work  
> more or less quickly, depending on the hardware.

I've tried again today and it runs not bad ( I'm using http:// 
www.openstreetmap.org/api/0.5/map? 
bbox=-1.37171315786,51.6923750052,-1.14129050705,51.8207152165 ).  
It's possible that vista was downloading and installing updates last  
time , I hardly ever use it.

>> I'm interested to try your shaded relief algorithm. Also, how do  
>> you fill voids ?
>>
> Currently, the voids are not filled :). I'm using the original NASA  
> SRTM3. But I am planning to include void filling or at least  
> support for void-filled datasets that are freely available on the net.

AFAIK, all freely available void-filled SRTMs are not free. At least  
there's 'for non-commercial use only' clause attached.

> As for releasing the source code: I still want to implement a lot  
> of ideas with Kosmos, but I haven't got the time to be involved  
> with maintaining an open source project on a daily basis.
> So until I feel it has reached a certain level of maturity, I'm  
> keeping it closed source.

I understand.
> But if you're interested in any particulars (like shading  
> algorithms), I can send you the code.

Yes, please. I'm very interested in new ideas for generating reliefs  
and filling voids.

Anyways, great stuff!

Cheers
Artem

>
> Regards,
> Igor