<html><head><meta http-equiv=Content-Type content="text/html; charset=iso-8859-1"><META name="Author" content="Novell GroupWise WebAccess"></head><body style='font-family: Tahoma, sans-serif; font-size: 13px; '>Hi<br><br>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.<br><br>Unfortunately, I need the OFFSITE command to make white transparent so that the white 'border' around the sheet does not obscure the map sheet it is overlapping.<br><br>I'm not sure what would be the easiest / best way around this. Does anybody have any ideas? Thanks.<br><br>Regards,<br><br>John W.<br><br>Great Britain Historical GIS Project<br><br><br><br>>>> Frank Warmerdam <warmerdam@pobox.com> 15/06/11 4:05 PM >>><br>On 11-06-10 12:25 PM, John Westwood wrote:<br>> Does anybody have any ideas what the problem could be? I know it is something<br>> to do with the fact that I boosted the images and MapServer doesn't like them,<br>> but I would like to fix it. Suggestions greatly appreciated.<br><br>John,<br><br>I'm afraid I don't have much to offer. I just wanted you to know that<br>someone had looked at your post and had no bright ideas about why it is<br>happening. If this is quite important to you, you could file a ticket<br>on the issue, reducing it to a simple map file with one input GeoTIFF<br>and a request (ideally with shp2img) that produces the artifacted output.<br>Then I could dig into this from my end.<br><br>If you do that, you can directly assign the MapServer ticket to "warmerdam".<br><br>Best regards,<br>-- <br>---------------------------------------+--------------------------------------<br>I set the clouds in motion - turn up | Frank Warmerdam, warmerdam@pobox.com<br>light and sound - activate the windows | http://pobox.com/~warmerdam<br>and watch the world go round - Rush | Geospatial Programmer for Rent<br><br></body></html>