Ah, that would make sense. Thanks everyone.
Daniele, to answer your question, I think you are correct in the expected
behaviour as I think I have hit that before. I setup the image mosaic store
first with 3 bands configured. The only reason that I can think of that I am
not hitting it now is because I am actually never requesting a mosaic of images
that have different number of bands together, even if the bounding box contains
both types. I am requesting by feature ID in addition to bounding box, and the
IDs are always image tiles from the same image. This is probably why it works.
Thanks,
Danny
From: Rahkonen Jukka (MML) [mailto:jukka.rahko...@maanmittauslaitos.fi]
Sent: Tuesday, April 14, 2015 3:00 AM
To: Danny Cheng
Cc: geoserver-users@lists.sourceforge.net
Subject: Re: [Geoserver-users] WCS Questions
Hi,
I believe that a WCS coverage must have a same number of bands and for that
reason coloured and greyscale images can’t be delivered as one coverage even if
Geoserver should support it. At least that was the case with WCS 1.0.0. A few
years ago we had a mixture of panchromatic and colour infrared images on the
same layer which is no problem for Mapserver as WMS, but for WCS we had to
build two separate coverages.
-Jukka Rahkonen-
Daniele Romagnoli wrote:
Hi Danny,
my answer to question #1 is inline...
==
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==
Ing. Daniele Romagnoli
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GeoSolutions S.A.S.
Via Poggio alle Viti 1187
55054 Massarosa (LU)
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phone: +39 0584 962313
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On Tue, Apr 14, 2015 at 2:24 AM, Danny Cheng
<dch...@mdacorporation.com<mailto:dch...@mdacorporation.com>> wrote:
Hi,
1. I have an image mosaic layer that consists of 1 band (panchromatic) and 3
band (RGB) images, if my WCS getCoverage request is over an area where both 1
band and 3 band images are present, GeoServer returns me an exception saying
that it can’t deal with images that have different number of bands. Is there a
way around this? Or is this intentional by design?
This is intentional by design: One of the constraints of a mosaic is that its
granules should have same colorModel. This means that they should have same
dataType (so you can't have a mosaic of Float granules and Byte granules
together) and same colors (so you can't have a mosaic of Gray images and RGB
images).
The strange thing is that it seems you have successfully configured a Layer
with those images whilst you should have received a message like this "Skipping
image YOURIMAGE because color models do not match.", during mosaic
configuration.
How did you configure your mosaic?
2. I found that WCS performance is really poor if my image mosaic layer uses
footprints to mask out blackfill. I presume the performance hit is because
GeoServer is generating the transparency layer on the fly. Is this true?
Thanks,
Danny
Cheers,
Daniele
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