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# Thread Subject: autocorr and crosscorr of a matrix???

 Subject: autocorr and crosscorr of a matrix??? Date: 22 Mar, 2009 21:40:04 Message: 1 of 3 How can i compute and plot the autocorrelation function of a matrix and the crosscorrelation function of two matrices (two 2D signals basically) in matlab? How can I determine automatically the integral scale (that is the first lag where the ACF goes to zero?) ... basically i want to do the same as here http://www.mathworks.com/access/helpdesk/help/toolbox/econ/index.html?/access/helpdesk/help/toolbox/econ/crosscorr.html&http://www.mathworks.com/access/helpdesk/help/toolbox/econ/autocorr.html http://www.mathworks.com/access/helpdesk/help/toolbox/econ/index.html?/access/helpdesk/help/toolbox/econ/parcorr.html&http://www.mathworks.com/access/helpdesk/help/toolbox/econ/autocorr.html but for a 2D signal so not for a vector
 Subject: autocorr and crosscorr of a matrix??? Date: 22 Mar, 2009 22:07:01 Message: 2 of 3 On Mar 22, 2:40=A0pm, "mconv...@Princeton.EDU" wrote: > How can i compute and plot the autocorrelation function of a matrix > and the crosscorrelation function of two matrices (two 2D signals > basically) in matlab? > > How can I determine automatically the integral scale (that is the > first lag where the ACF goes to zero?) ... > > basically i want to do the same as here > > http://www.mathworks.com/access/helpdesk/help/toolbox/econ/index.html... > > http://www.mathworks.com/access/helpdesk/help/toolbox/econ/index.html... > > but for a 2D signal so not for a vector THAT IS BASICALLY CALLED SPATIAL AUTOCORRELATION AND SPATIAL CROSSCORRELATION ..., DO ANYONE KNOW ABOUT AN ALREADY PREPARED CODE OR FUNCTION?
 Subject: autocorr and crosscorr of a matrix??? From: Matteo Convertino Date: 22 Mar, 2009 22:36:01 Message: 3 of 3 "mconvert@Princeton.EDU" wrote in message <162a518f-a297-46f9-b1b2-182e36ac7e1b@q16g2000yqg.googlegroups.com>... > How can i compute and plot the autocorrelation function of a matrix > and the crosscorrelation function of two matrices (two 2D signals > basically) in matlab? > > How can I determine automatically the integral scale (that is the > first lag where the ACF goes to zero?) ... > > basically i want to do the same as here > > http://www.mathworks.com/access/helpdesk/help/toolbox/econ/index.html?/access/helpdesk/help/toolbox/econ/crosscorr.html&http://www.mathworks.com/access/helpdesk/help/toolbox/econ/autocorr.html > > http://www.mathworks.com/access/helpdesk/help/toolbox/econ/index.html?/access/helpdesk/help/toolbox/econ/parcorr.html&http://www.mathworks.com/access/helpdesk/help/toolbox/econ/autocorr.html > > but for a 2D signal so not for a vector