I've a series of DEMs (USGS origin) that need some editing. How can the Z value of a particular pixel be changed? My goal is to smooth obviously incorrect values with their neighboring values. Here's what I have been able to do (using VM2.1.1/MI5.5, no MB yet): 1. Successfully selected out-of-range values and reassigned them to null by using Grid Query. That's an improvement, but doesn't seem to be a route to assigning a (realistic)value to each particular pixel. 2. Captured values of selected pixels to the VMCapture table. These values can clearly be edited and the table saved, but how can they be incorporated back into the grid? Documentation is sparse. 2a. In one test I selected a small region (~12 pixels) around the target pixels, assigned realistic-if-arbitrary values to the targets, saved the table, created points from the table, and interpolated those in VM. Attempts to union this patch with the original grid have so far been unsuccessful. Seems like there ought to be a better way, anyway. Your suggestions for further experiments greatly appreciated! Drew ________________________ Andrew Phillips, Ph.D. Quaternary Geology Section Illinois State Geological Survey ________________________ ---------------------------------------------------------------------- To unsubscribe from this list, send e-mail to [EMAIL PROTECTED] and put "unsubscribe MAPINFO-L" in the message body, or contact [EMAIL PROTECTED]
