[Geoserver-devel] [JIRA] (GEOS-8299) High oversampling on raster data might result in white response on a non empty area

GeoServer GeoServer Developer
1

Andrea Aime created an issue

GeoServer / BugGEOS-8299

High oversampling on raster data might result in white response on a non empty area

Issue Type:

BugBug

Assignee:

Unassigned

Components:

WMS

Created:

24/Sep/17 5:06 PM

Priority:

MediumMedium

Reporter:

Andrea Aime

Example using a demo layer:

http://localhost:8080/geoserver/wms?SERVICE=WMS&&StYlEs=rain&BbOx=0,-0.0020,0.0040,0&SrS=EPSG%3A4326&LaYeRs=nurc%3AArc_Sample&WiDtH=100&VeRsIoN=1.1.1&FoRmAt=image%2Fpng&HeIgHt=100&ReQuEsT=GetMap

The output is white, but the actual result should be colored. The request is oversampling the original data by 25 thousands times (original data at 0.5deg/px, request at 0,00002 deg/px), so I’d suspect some numerical issue when computing the requested grid geometry.

One funny note, on my computer I actually get a green box (which would be a correct response) against that request, but not on cloudsdi, which is also a master/2.12.x build.
So, maybe there is some contextual bit yet to be discovered about it (I’ve been messing with ROIGeometry recently, wondering if some of my experiments are in the classpath).

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