[Geoserver-users] Big GeoTiff visualisation "artifacts"

GeoServer GeoServer User
1

Hi all,

We are using Geoserver ( currently 2.3.0 ) since quite some time and are very pleased with his ease in usage and the achieved performance in our professional environment. Great work!

But we are facing an issue with hosting a particular Geotiff file.

Here’s the scenario:

We have a 81GB rst file ( 1 Band of Floats ) that we converted into geotiff using GDAL ( python api ).

We have converted the floats to Int32 ( after multiplication with 100 )

We have added the georeference, added tiling ( 512x512 ), set the NOData value, then we added 5 level of pyramids using bicubic resampling.

The resulting image is a 109GB Geotiff that can be easily and fast accessed via QGis, no artefacts …

Now we have put the Geotiff under the geoserver, added the SLD for coloring and get this strange result but we don’t see the cause.

And as stated earlier, we can open this Geotiff using QGis without the strange effects …

Here you can find the an image unveiling the error: http://imgur.com/9SsMmsl

Details about the installation:

· ( Build Information : Version 2.3.0 n Git Revision 257c5f6a57df84ecf2aaea392fe8e22dbd70ca09, Build Date 16-Mar-2013 14:00 ,GeoTools Version 9.0 (rev cd6a0ac13e0ccd9ed3df653e1d7ca640a80ed86d) ,GeoWebCache Version 1.4- )

· Jai is used, Java version is; java version “1.6.0_24”, Java™ SE Runtime Environment (build 1.6.0_24-b07), Java HotSpot™ 64-Bit Server VM (build 19.1-b02, mixed mode)

Regards,

Stephen

2

Hi Stephen,

do you have any chance to replicate this problem on a reduced part of your sample data which can be shared with us so we can take a look on it?

Which OS are you using?

Please, let us know.
Regards,
Daniele

···

==
GeoServer training in Milan, 6th & 7th June 2013! Visit
http://geoserver.geo-solutions.it for more information.

Ing. Daniele Romagnoli
Senior Software Engineer

GeoSolutions S.A.S.
Via Poggio alle Viti 1187
55054 Massarosa (LU)
Italy
phone: +39 0584 962313
fax: +39 0584 1660272

http://www.geo-solutions.it
http://twitter.com/geosolutions_it

On Mon, Apr 15, 2013 at 11:30 AM, Kempenaers Stephen <stephen.kempenaers@anonymised.com> wrote:

Hi all,

We are using Geoserver ( currently 2.3.0 ) since quite some time and are very pleased with his ease in usage and the achieved performance in our professional environment. Great work!

But we are facing an issue with hosting a particular Geotiff file.

Here’s the scenario:

We have a 81GB rst file ( 1 Band of Floats ) that we converted into geotiff using GDAL ( python api ).

We have converted the floats to Int32 ( after multiplication with 100 )

We have added the georeference, added tiling ( 512x512 ), set the NOData value, then we added 5 level of pyramids using bicubic resampling.

The resulting image is a 109GB Geotiff that can be easily and fast accessed via QGis, no artefacts …

Now we have put the Geotiff under the geoserver, added the SLD for coloring and get this strange result but we don’t see the cause.

And as stated earlier, we can open this Geotiff using QGis without the strange effects …

Here you can find the an image unveiling the error: http://imgur.com/9SsMmsl

Details about the installation:

· ( Build Information : Version 2.3.0 n Git Revision 257c5f6a57df84ecf2aaea392fe8e22dbd70ca09, Build Date 16-Mar-2013 14:00 ,GeoTools Version 9.0 (rev cd6a0ac13e0ccd9ed3df653e1d7ca640a80ed86d) ,GeoWebCache Version 1.4- )

· Jai is used, Java version is; java version “1.6.0_24”, Java™ SE Runtime Environment (build 1.6.0_24-b07), Java HotSpot™ 64-Bit Server VM (build 19.1-b02, mixed mode)

Regards,

Stephen

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3

Hi Stephen,
any updates on this?
Regards,
Simone Giannecchini

GeoServer training in Milan, 6th & 7th June 2013! Visit
http://geoserver.geo-solutions.it for more information.

Ing. Simone Giannecchini
@simogeo
Founder/Director

GeoSolutions S.A.S.
Via Poggio alle Viti 1187
55054 Massarosa (LU)
Italy
phone: +39 0584 962313
fax: +39 0584 1660272
mob: +39 333 8128928

http://www.geo-solutions.it
http://twitter.com/geosolutions_it

-------------------------------------------------------

On Mon, Apr 15, 2013 at 11:30 AM, Kempenaers Stephen
<stephen.kempenaers@anonymised.com> wrote:

Hi all,

We are using Geoserver ( currently 2.3.0 ) since quite some time and are
very pleased with his ease in usage and the achieved performance in our
professional environment. Great work!

But we are facing an issue with hosting a particular Geotiff file.

Here’s the scenario:

We have a 81GB rst file ( 1 Band of Floats ) that we converted into geotiff
using GDAL ( python api ).

We have converted the floats to Int32 ( after multiplication with 100 )

We have added the georeference, added tiling ( 512x512 ), set the NOData
value, then we added 5 level of pyramids using bicubic resampling.

The resulting image is a 109GB Geotiff that can be easily and fast accessed
via QGis, no artefacts …

Now we have put the Geotiff under the geoserver, added the SLD for coloring
and get this strange result but we don’t see the cause.

And as stated earlier, we can open this Geotiff using QGis without the
strange effects …

Here you can find the an image unveiling the error:
http://imgur.com/9SsMmsl

Details about the installation:

· ( Build Information : Version 2.3.0 n Git Revision
257c5f6a57df84ecf2aaea392fe8e22dbd70ca09, Build Date 16-Mar-2013 14:00
,GeoTools Version 9.0 (rev cd6a0ac13e0ccd9ed3df653e1d7ca640a80ed86d)
,GeoWebCache Version 1.4- )

· Jai is used, Java version is; java version "1.6.0_24", Java(TM)
SE Runtime Environment (build 1.6.0_24-b07), Java HotSpot(TM) 64-Bit Server
VM (build 19.1-b02, mixed mode)

Regards,

Stephen

VITO Disclaimer: http://www.vito.be/e-maildisclaimer

------------------------------------------------------------------------------
Precog is a next-generation analytics platform capable of advanced
analytics on semi-structured data. The platform includes APIs for building
apps and a phenomenal toolset for data science. Developers can use
our toolset for easy data analysis & visualization. Get a free account!
http://www2.precog.com/precogplatform/slashdotnewsletter
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