Hi Matt, you should definitely do that by use of FFT convolution. For reference see e.g. http://www.engr.udayton.edu/faculty/jloomis/ece561/notes/xcorr/xcorr.html (example 2)

best greetings, Thomas

----- Original Message ----- From: "matthew jones" m.jones@signal.qinetiq.com To: "Thomas Grill" t.grill@gmx.net Sent: Wednesday, March 03, 2004 2:04 PM Subject: vasp xcorr?

Hi thomas, apologies for the personal mail further to my earlier pd-list post, I've started to get excited about

vasp!

but is there a nice way of doing cross-correlation within vasp? or do I

have

to do it manually with multiply, shift and sum? cheers,

Matt

-=-=-=-=-=-=-=-=-=-=-=-=- http://www.loopit.org/ -=-=-=-=-=-=-=-=-=-=-=-=-