Barry Lotz wrote: > Larry and John > Larry, I don't mind sending you the code. However when I write or modify > code the last thing in the process is documentation and user friendlyness :-} . Please send me a copy. I'm a retired software engineer and believe me, I'm used to having no documentation for "legacy" code. Besides, I like puzzles. > I somewhat agree with John wrt modifying data. I use the filtered data in my > triggering routine but when the trigger has been set I record it all. On another > line of thinking, wouldn't one have similar trouble recovering data after exotic > analog filtering? Point well taken. I don't think you should ever get rid of your original "raw" data. I have'nt really entertained the idea of analog filetering of the data, but the idea of using some sort of digital filter on the data coming off the A-D seems like a natural. > Long ago and far away I was wanting to place a remote sensor in a non > functioning gold mine (with permission) near my house or in a remote site in a > national forest. I therefore was concerned about storage and power. As a > consequence I have been working on an elaborate trigger routine to only save > events I was able to catch, (kind of like fishing I guess). With available data > cards that store several megs of data, and the possibility of modems and maybe > the internet, working about storage space and trigger routines maybe academic > now. > Half the fun for me has been developing my own data capture software. My original concept was to trigger on events and only save the data that encompasses the event. It's harder than I'd expected to distinguish a real event from random stuff (with an algorithm). Interesting, since about half of the events I've recorded were caught because I happened to be watching the data come in and it was immediately obvious that something interesting was happening. It ain't easy to come up with an algorithm that works as well as a "meathead" processor. I'm not yet willing to go to a "record everything and look later" system, but it makes a lof of sense to go that way Larry __________________________________________________________ Public Seismic Network Mailing List (PSN-L)
Larry Cochrane <cochrane@..............>