Re: [mapserver-users] Rendering artefacts when serving raster via WMS

2011-06-15 Thread Frank Warmerdam
On 11-06-10 12:25 PM, John Westwood wrote: Does anybody have any ideas what the problem could be? I know it is something to do with the fact that I boosted the images and MapServer doesn't like them, but I would like to fix it. Suggestions greatly appreciated. John, I'm afraid I don't have muc

Re: [mapserver-users] Rendering artefacts when serving raster via WMS

2011-06-15 Thread Brent Fraser
John, It looks like a resampling problem. You could try adding PROCESSING "OVERSAMPLE_RATIO=1" PROCESSING "LOAD_FULL_RES_IMAGE=NO" to your layer definition. I had some success with these when trying to get mapserver to render large (and readable) images from OpenStreetMap.

RE: [mapserver-users] Rendering artefacts when serving raster via WMS

2011-06-15 Thread Lime, Steve D (DNR)
naged (perhaps as tiles)? Steve -Original Message- From: mapserver-users-boun...@lists.osgeo.org [mailto:mapserver-users-boun...@lists.osgeo.org] On Behalf Of Frank Warmerdam Sent: Wednesday, June 15, 2011 10:05 AM To: John Westwood; MAPSERVER-USERS Subject: Re: [mapserver-users] Renderi

RE: [mapserver-users] Rendering artefacts when serving raster via WMS

2011-06-16 Thread John Westwood
boun...@lists.osgeo.org [mailto:mapserver-users-boun...@lists.osgeo.org] On Behalf Of Frank Warmerdam Sent: Wednesday, June 15, 2011 10:05 AM To: John Westwood; MAPSERVER-USERS Subject: Re: [mapserver-users] Rendering artefacts when serving raster via WMS On 11-06-10 12:25 PM, John Westwood wrote: >

Re: [mapserver-users] Rendering artefacts when serving raster via WMS

2011-06-16 Thread John Westwood
Hi Brent Thanks for the hint. I gave it a try but it did not help. I will have another look at the problem next week. Regards John W. >>> Brent Fraser 15/06/11 4:21 PM >>> John, It looks like a resampling problem. You could try adding PROCESSING "OVERSAMPLE_RATIO=1" PROCESSING "LOA

Re: [mapserver-users] Rendering artefacts when serving raster via WMS * SOLVED * Sort of

2011-06-27 Thread John Westwood
Hi After testing with shp2img I have just realised what is causing this problem. It is all my fault :) Some of the map sheets overlap and I am using the OFFSITE command with 255 255 255 to make white transparent, hence some of the sheet behind is showing through. Unfortunately, I need the OFFSITE