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About Mud-Dauber

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  1. Yes, increasing the # of rings to 5 seems to solve the problem. Good suggestion.
  2. Looks like I fixed it by reducing the density of the trench grid to 4'x4'. The surface computes with no difficulty with that grid and the remaining points and polylines.
  3. I'm using Quicksurf for ACAD 2011 to map a complex water table located next to a river and am having problems with Quicksurf reporting "unstable" and stopping during grid processing. The area I'm mapping contains a variety of elevation points, including randomly scattered well elevation data, an interceptor trench with a central pumping well and a elevation data from a group of pumping wells adjacent to the trench. I'm trying to model the trench with a three-dimensional array of points that are configured to approximate a drawdown cone within the trench, based on elevations at one end and in
  4. I'm trying to perform surface math, by subtracting one surface from another, and contouring the resulting "." surface. The surfaces I'm creating have a lot of variable points, but only about 10' of relief across the site. I'm getting an "unstable" error when I attempt to contour the surface with a kriging algorithm and the gridding process aborts. If I select the standard one, the gridding process completes. I'm using kriging on the primary surfaces, so using standard on the difference surface isn't a problem. However, I would like to understand the source of the problem. I'm using Auto
  5. I had an on-again, off-again issue with Quicksurf, which I've used for many years for contouring environmental and geologic data. The issue is contours with offset kinks in them when using the kriging algorithm, typically with the exponential variogram model with concentration data. The surface will grid and contour as usual, but some, not all, of the contours will contain kinks in them in which the contours are offset a short distance, usually roughly equivalent to the grid spacing in short segments. The offset contours have right angle connecting segments to the main contour pline. It's
  6. Does anyone have a clue if QuickSurf 2010 will run on top of progCAD 2010 Professional? The latter is supposed to be Autocad compatible in most ways. Also, are there any new features in QS 2010 that aren't in the excellent version 5.1 (which I am still using with Autocad 2000i)?
  7. I need to open a data file downloaded from a Garmin GPS III+ that consists of a *.gdb file. When I attempt to open the file, Global Mapper 10 reports that the overlay type cannot be determined from the file name and pops open a dialog box with a number of available overlay types, beginning with ACE (altitude corrected. Which overlay should I pick? I have Garmin's MapSource and can export to UTM DXF that way, but a direct import to Global Mapper would be nice. Thanks for some help!
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