Re: [Geotools-devel] Merging multiple coverages into one with custom merge operation

2013-07-26 Thread Andrea Aime
On Fri, Jul 26, 2013 at 9:48 AM, Jan De Moerloose < jan.demoerlo...@geosparc.com> wrote: > I already checked the ImageMosaic module but could not find any hooks to > change the merge behavior. > There is none > I noticed there is a MOSAIC_TYPE_BLEND in JAI, which allows me to take > weighted a

Re: [Geotools-devel] Merging multiple coverages into one with custom merge operation

2013-07-26 Thread Jan De Moerloose
I already checked the ImageMosaic module but could not find any hooks to change the merge behavior. I noticed there is a |MOSAIC_TYPE_BLEND| in JAI, which allows me to take weighted averages by passing an extra alpha image for each image. I will explore that and let you know. If there are any s

Re: [Geotools-devel] Merging multiple coverages into one with custom merge operation

2013-07-25 Thread Andrea Aime
On Thu, Jul 25, 2013 at 10:05 PM, Jody Garnett wrote: > Have a look at how mosaic works. > I'd suggest, look the JAI mosaic operation. If it does not do what you need, then you'll have to write a close relative of it (so, a new JAI operation) Cheers Andrea -- == Our support, Your Success! Vi

Re: [Geotools-devel] Merging multiple coverages into one with custom merge operation

2013-07-25 Thread Jody Garnett
Have a look at how mosaic works. -- Jody Garnett On 26/07/2013, at 12:35 AM, Jan De Moerloose wrote: > Sorry, wrong list. I reposted to users. > On 25/07/2013 15:55, Jan De Moerloose wrote: >> Hi, >> >> i have a collection of coverages with different envelopes and want to >> merge that into

Re: [Geotools-devel] Merging multiple coverages into one with custom merge operation

2013-07-25 Thread Jan De Moerloose
Sorry, wrong list. I reposted to users. On 25/07/2013 15:55, Jan De Moerloose wrote: > Hi, > > i have a collection of coverages with different envelopes and want to > merge that into a single coverage for rendering. Is there some > functionality in geotools to do that, taking into account that i wo

[Geotools-devel] Merging multiple coverages into one with custom merge operation

2013-07-25 Thread Jan De Moerloose
Hi, i have a collection of coverages with different envelopes and want to merge that into a single coverage for rendering. Is there some functionality in geotools to do that, taking into account that i would like to calculate the value in a point of overlap in a rather custom way, not just tak