Hello All, I am trying to use Vertical Mapper to create region contours of the sea bed over an area consisting of the North Sea. Irish Sea, Channel etc and edge of the Atlantic. My problem is that I have a dataset consisting of high resolution data for part of the North Sea and a courser resolution everywhere else. I can contour the high res. section ok on its own. When I try and combine this with the courser data I have to choose a fine grid over the whole area over which to thread the contours in order for the fine res. section to be at the required resolution. Vertical Mapper creates the grid but cannot cope with creating the contours because it "exceeds its limit of 32000 nodes." I could coursen the entire grid but then the section of high resolution data is not contoured to an adequate resolution. Is there a way to create widely spaced contours over a certain region and finely spaced contours over another so that it does not try to thread lots of contours through my course data ? Alternatively is there a way to make a contour map of the course data and the high resolution data seperately and combine them afterwards ? I have tried just overlaying the high res. contours over the course ones but of course they do not match up well and a distinct boundary is very clear. I can reshape the region contours but can't 'open them' to join onto others. Is coursening the grid the only option ? Any help on this would be greatly appreciated. Elliot Tinton Centre for the Environment, Fisheries and Aquaculture Sciences. Lowestoft Lab. Pakefield Road Lowestoft NR33 OHT [EMAIL PROTECTED] ---------------------------------------------------------------------- To unsubscribe from this list, send e-mail to [EMAIL PROTECTED] and put "unsubscribe MAPINFO-L" in the message body, or contact [EMAIL PROTECTED]
