Richard, I use a script (*.GS) for this in which I have loaded all twenty channels and their non-linear and/or linear filtering parameters. I usually set up X, then replicate it for Z, changing the numerical values as required. I have also created complex scripts with DOS batch files, employing the ECHO command to pass in variable filter parameters as well as the GX syntax statements. The nice thing about this approach is that the work is re-usable form project to project with minor adjustments. Best Regards, Chris. Chris Vaughan President and Chief Geophysicist CGI Controlled Geophysics Inc. Thornhill, Ontario, Canada ----- Original Message ----- From: "Richard Irvine" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Tuesday, July 17, 2001 12:28 PM Subject: [geonet]: Multi-channel smoothing > I have a database with Geotem data - 20 channels each of dBdT X and Z, > another 20 channels each of B-Field X and Z, i.e. 80 channels in total. > > I need to apply a convolution smoothing filter (e.g. 11 points, with > variable weights) to all 80 channels. Having just done this one channel at a > time, I am interested in any ideas as to an easier and faster way to do > this!!! > > A similar requirement is to apply a non-linear filter to each set of 20 > channels. This is slightly more complicated, because the amplitudes in the > early channels are very large and in the later channels relatively small, so > that you need to vary the Filter Tolerance value - say one value for > channels 1-5, another value for channels 6-10 etc. > > Also, is there a way to Remove (and Show) blocks of channels from a > database? This a common problem when you have hundreds of channels of data > and you cannot show any additional channels because of the limitation on the > number that can be shown at any one time. I want to be able to easily Remove > (say) all 20 dBdT X channels and replace them by all 20 B-Field channels. > At the moment I have to do this one channel at a time, which is very > laborious. > > -------------------------- > Richard Irvine > Condor Consulting, Inc. > 4860 Robb St. #206 > Wheat Ridge > CO 80033 USA > Tel (303) 423 8475 > Fax (303) 423 9729 > email [EMAIL PROTECTED] > Web Site www.condorconsult.com > > > > > > _______________________________________________________ > More mailing list info http://www.geosoft.com/support/listserv/index.html > _______________________________________________________ More mailing list info http://www.geosoft.com/support/listserv/index.html
