Create Area from broken contour lines

Mike,
I've attached test.gmp. I would like to create an area covering the contours from layer shallow up through 3690 plus 3700. Unfortunately the contours are pretty broken up. Is there a way to do this with GM, without manually tracing out each contour to create connections? The full map is huge, and the task would be endless by hand.
Thanks,
Frank
I've attached test.gmp. I would like to create an area covering the contours from layer shallow up through 3690 plus 3700. Unfortunately the contours are pretty broken up. Is there a way to do this with GM, without manually tracing out each contour to create connections? The full map is huge, and the task would be endless by hand.
Thanks,
Frank
Comments
What I would do is grid the contours (Analysis menu command to create grid), then go to the Alter Elevations tab of the Options dialog for the grid and clamp the valid range to what you want, then right-click on the grid layer and select to create a coverage polygon. That should give you an area covering just the valid data in that range.
Thanks,
Mike
Global Mapper Guru
geohelp@bluemarblegeo.com
Blue Marble Geographics for Coordinate Conversion, Image Reprojection and Vector Translation
Thanks for getting back to me. Unfortunately, I don't follow your suggestion. I select the analysis tab, getting 5 choices. Only the first one "Create elevation grid from 3D vector data..." will accept my selection. Other than the 3D, I think that's the one you wanted me to select. I don't see an "Alter Elevations tab" in the "Grid Options". There is "Select layers containing 3D vector data..." before I get to the "Grid Options" tab, from those I select 3580 thru 3700. Next on the "Grid Options" I uncheck "Use 3D lines & Flatten 3D areas". If I don't the program crashes. With this I get;
Unable to grid 3D points from selected overlays.TriangulatedSurface.cpp - 576
Version: v14.2.0 (32-bit)
Build Time: May 22 2013 00:48:10
Frank
I suppose it's possible if the processor is extremely old that the triangulation library is using some instructions that aren't available and crashing. What processor do you have? I've never seen this happen, at least not on a computer that at least supports Windows XP.
Thanks,
Mike
Global Mapper Guru
geohelp@bluemarblegeo.com
Blue Marble Geographics for Coordinate Conversion, Image Reprojection and Vector Translation
I have a 2000 AMD Athlon Socket A 1333 MHz. I've update the BIOS, and I'm don't they've supported anymore updates. It may be time, but as an old guy, I'm tired of updating to the "new and better".
Thanks,
Mike
Global Mapper Guru
geohelp@bluemarblegeo.com
Blue Marble Geographics for Coordinate Conversion, Image Reprojection and Vector Translation