Re: [deegree-users] RasterTreeBuilder and Folder Names

[Andreas P. <po...@la...>]

Hi,

>Hello,
>
>I have a question about the RasterTreeBuilder, which is part of deegree2.
>If I use it to tile the SaltLakeCity demo coverage, the RTB creates several folders, containing the tiles in the appropriate resolution. These folders are numbered from 1.0 over 2.0 etc. up to 64.0.
>
>If I now, use the RTB on other coverages, the RTB might create folder names like: �0.39999999990687� or �6.39999999850992�.
>
>The WCS works fine, I just wanted to know about the -why-, to foresee possible problems�
>The first question I have is: 
>�Why does the RTB creates such names, and what does they mean?�
>(I thought it would be the resolution compared to the basic-coverage, but then, a 0.x existing, doesn�t make sense, doesn�t it?)
>  
>
you are right so far that the name of the folder is identical to the 
spatial resolution of the contained tiles. 0.x makes sense because 
resolution will be measured in the units of the coordinate reference 
system of the raster. If this is 'meter' (which is the case for 
SaltLakeCity) and the highest resolution is is less (e.g. 0.3999 m) the 
target directory for corresponding files will be name like this.

>And the second: 
>�What if, I want to update one or more coverages. 
>I have, for example, 20 coverages I tile with the RTB and get �those� folder-names � if I later tile only 5 of them, will the folder names and the content of the tiles be the same?
>  
>
At the the moment there is no application/tool for this but we would be 
glad to have something like this too.

best regards

ANDREAS

-- 
Dr. Andreas Poth

l a t / l o n  GmbH
Aennchenstrasse 19            53177 Bonn, Germany
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