[geotk] advice re. surface interpolation?

colin c colincombe at googlemail.com
Mon Apr 26 08:58:43 EDT 2010

thanks Johann, Martin
 - sorry, i don't know which specific interpolations are required. I am
writing a short review of potential GIS solutions for a geologist but the
requirements do not give details of the specific interpolations used. I
think a range of algorithms will be required and these would need to be
sourced from outside geotoolkit,


On Sun, Apr 25, 2010 at 10:42 PM, Johann Sorel <johann.sorel at geomatys.com>wrote:

> Hello Colin,
> May I ask you more details on the interpolation you are looking for ?
> We actually have one which generate a coverage from a list a
> coordinate/value pair.
> Anyway geotoolkit has everything needed to create coverage so if you have
> the algorithm that shouldn't be to much work, martin will give you more
> details if you choose this path.
> About WWJ : it's mostly experimental for the moment, but if you have some
> knowledge about WWJ your help is welcome.
> Regards,
> Johann Sorel
> colin c wrote:
>> Hi,
>> I am looking into possible GIS tools for geologists based on Free Open
>> Source Software. The alternatives I am considering are GRASS and geotoolkit.
>> Grass appears to have the advantage because:
>>  - 3d rendering is working
>>  - surface interpolation is already part of GRASS.
>> I have seen what Johann Sorel has been doing re. using the 3D renderer
>> from WorldWind with geotoolkit <
>> http://forum.worldwindcentral.com/showthread.php?p=80151http://forum.worldwindcentral.com/showthread.php?p=80151
>> >.
>> Am i right to think geotoolkit does not contain its own tools for surface
>> interpolation and this functionality would need to be integrated from
>> elsewhere? Possible sources might be CGAL, GRASS or R?
>> I think I am imagining something which combines PuzzleGIS with (command
>> line?) functions from GRASS, similar to the way JGRASS <
>> http://udig.refractions.net/gallery/jgrass/> combines uDig with
>>  functionality from GRASS to create a bespoke tool for hydrologists.
>> Any advice much appreciated,
>> Regards,
>> Colin
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