Squiggles, Finally!

Finally, success!  I've got the time search program working, and I've been able to find some windows with LFE looking things.  The reason I wasn't getting any data was simply that I hadn't been thorough enough about changing dates from my old program - I was telling Matlab at one point to cut a data set between times A and B when time B was actually before A..... yeah.  So no wonder it wasn't working.  I also fixed a minor timing issue, or rather it fixed itself, because I don't really know what I did, but it stopped being an issue.  For some reason when Matlab cuts the windows of data out, the time stamps that mark the beginning of the seismic record for that window get put in the format 2009:08:25:00:60, rather than 2009:08:25:01:00.  But when you use the datenum function on both those time vectors you still get the same number, so it all works out.  I've made the program pretty user friendly - the program starts by asking you to enter a time in minutes and seconds, and then it pops up the window corresponding to the time you entered (you have to enter specific times 2:30 apart, it won't do just any time).  You are then given four options: 1) advance to next window 2) go back to previous window 3) enter a new time and 4) quit.  It's simplistic, but it serves my purposes, and so I am well satisfied.

 

Next step is to conquer the larger beast of the cross correlation program.  That's the one originialy written by a grad student, and it's difficult to modify becasue I'm not always sure what all the code does, which usually means a lot of crazy searches from variable to variable when things go wrong.  When I get that program working on the Slumgullion Data, I'll run through the 15 or so possible LFEs I found this week to see if any of them repeat in the record.  I also want to go back to the data from the Juan de Fuca, find a few likely LFE canditates, and plot some frequency curves for those and the Slumgullion ones.  This, of course, means I have to figure out how to DO that.... but hopefully that shall come.  I am much encouraged that I'm actually making progress now.