Generic Signal Class: w=getcenterofmass(sig) - File Exchange

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Highlights from
Generic Signal Class

[h_min,h_max,t_min,t_max]=get... method of class @signal
[lowpasssig,maxinfo,mininfo]=... sophisticated peak picker
[lsig,scaleinfo]=logsigx(sig,... method of class @signal
[m,b]=linearfit(sig) fit the signal with a streight line and return the slope (m) and the zero
[m,x]=absmax(sig) method of class @signal
[m,x]=max(sig) method of class @signal
[m,x]=min(sig) method of class @signal
[maxpos,minpos,maxs,mins]=get... method of class @signal
[meana,stda]=average(sig,t_st... method of class @signal
[phase,vectorstrength,strengt... calculates the phase in radian for the stimulus in stim given a frequency
[sig1,sig2]=loadwavefile(sig,... method of class @signal
[t,h]=getlocalmaxima(sig) method of class @signal
[t,h]=getlocalminima(sig) method of class @signal
[val,height,width,widthvals,b... method of class @signal
[val,hoch,breit,widthvals]=qv... method of class @signal
disp(sig) method of class @signal
display(sig) method of class @signal
edit(sig) opens the signal in CoolEdit (if installed)
env=envelope(sig,mintime,maxt... method of class @signal
filtered_sig=bandpass(sig,low... method of class @signal
filtered_sig=lowpass(sig,freq... method of class @signal
fsig=powerspectrum(sig,nr_fft... method of class @signal
info(sig) method of class @signal
labs=getxlabels(sig) method of class @signal
linsig=linsigx(sig) method of class @signal
ma=getmaximumtime(sig) method of class @signal
ma=getminimumtime(sig) method of class @signal
n=getunit_x(sig) method of class @signal
n=getunit_y(sig) method of class @signal
name=getname(sig) method of class @signal
newsig=squeeze(sig,factor)
nr=getnrchannels(sig) method of class @signal
nr=getnrpoints(a) method of class @signal
nvals=leakyintegrator(sig,low... (c) 2003, University of Cambridge, Medical Research Council
per=getoneperiod(signal,riset... method of class @signal
play(sig,attenuation,ramp) method of class @signal
plotwithenvelope(signal,borde... method of class @signal
res =getlength(sig) method of class @signal
res =getsr(sig) method of class @signal
res=bin2time(sig,val) method of class @signal
res=nicespectrum(a) method of class @signal
ret=getdata(a) method of class @signal
ret=getvalues(a) method of class @signal
ret=isoftype(inp,str) method of class @signal
ret=sig2simulinkinput(sig) method of class @signal
ret=time2bin(sig,time)
rethandle=fill(sig,border,sti... method of class @signal
rethandle=plot(sig,border,sti... method of class @signal
retsig=bin(sig,binwidth) calculate the binned version of the signal
s=sum(sig,t_start,t_stop)
savewave(sig,name,ramp) method of class @signal
savewaveprescaled(sig,name) method of class @signal
sig=abs(sig) method of class @signal
sig=add(a,b,start_time,dauer) method of class @signal
sig=addtimevalue(sig,time,val... method of class @signal
sig=antitilt(sig,tilttime) method of class @signal
sig=append(sig,b) method of class @signal
sig=attenuate(sig,attenuation... method of class @signal
sig=autocorrelate(sig,delay_s... method of class @signal
sig=buildfrompoints(sig,xx,yy... method of class @signal
sig=buildspikesfrompoints(sig... method of class @signal
sig=changesr(a,sr_neu) method of class @signal
sig=complexfilter(sig,formant... method of class @signal
sig=copy(a,b,start_time) method of class @signal
sig=createfrompoly(sig,p) creates the signal from the points in the polynoms p (very useful with
sig=crosscorrelate(sig1,sig2,... method of class @signal
sig=delay(sig,del) method of class @signal
sig=erb2log(sig,cfs) method of class @signal
sig=exp(sig) exp the stimulus
sig=expand(a,newlength,value) method of class @signal
sig=gen_vowel(sig,options) function to generate an artificial vowel
sig=genam(sig,fc,f0,modgrad) method of class @signal
sig=genbandpassnoise(sig,lowf... method of class @signal
sig=generateAMnoise(sig,fre,m... method of class @signal
sig=generateclicktrain(sig,fr... method of class @signal
sig=generatedampsinus(sig,car... method of class @signal
sig=generatefromsimulinkstruc... method of class @signal
sig=generatefromspiketrain(si... sig=addtimevalue(sig,selecttimes,1);
sig=generategauss(sig,pos,hig... method of class @signal
sig=generateirn(sig,delay,g,n... method of class @signal
sig=generaterampsinus(sig,car... method of class @signal
sig=generatesinus(sig,fre,amp... method of class @signal
sig=generatesweep(sig,fre1,fr... method of class @signal
sig=genharmonics(sig,varargin... method of class @signal
sig=getpart(a,from,to) method of class @signal
sig=halfwaverectify(sig) method of class @signal
sig=halfwayrectify(sig) method of class @signal
sig=highpass(sig,frequency,st... method of class @signal
sig=hilbertenvelope(a) method of class @signal
sig=log(sig) method of class @signal
sig=lowpass_2003(sig,cutoff,o...
sig=minus(a,b) method of class @signal
sig=modtuningtilt(sig) method of class @signal
sig=mrdivide(sig,b) method of class @signal
sig=mtimes(a,b) method of class @signal
sig=mult(a,b,start_time,dauer... method of class @signal
sig=mute(a) method of class @signal
sig=plus(a,b) method of class @signal
sig=rampamplitude(sig,rt,type... method of class @signal
sig=rampamplitude(sig,rt,type... method of class @signal
sig=reverse(sig) method of class @signal
sig=scale(si,a) method of class @signal
sig=scaletomaxvalue(si,maxv) method of class @signal
sig=scaletorms(sig, value) method of class @signal
sig=secondderivation(sig) method of class @signal
sig=setbinvalue(sig,bin,value... method of class @signal
sig=setlength(sig,newlen) method of class @signal
sig=setname(sig,name) method of class @signal
sig=setnrxticks(sig,nr) method of class @signal
sig=setsr(sig,sr_neu) method of class @signal
sig=setstarttime(sig,time) method of class @signal
sig=settimevalue(sig,time,val... method of class @signal
sig=settozeroaverage(sig) method of class @signal
sig=setunit_x(sig,name) method of class @signal
sig=setunit_y(sig,name) method of class @signal
sig=setvalues(org_sig,new_val... method of class @signal
sig=setxlabels(sig,labels) method of class @signal
sig=shift(si,a) method of class @signal
sig=shiftcircular(sig,shiftti... shift the period in time circlular
sig=signal(laenge,samplerate,... constructor of class @signal
sig=smooth(org_sig,sigma, typ... method of class @signal
sig=tilt(sig,tilttime) method of class @signal
sig=toshio_lowpass(sig,cutoff...
sig=uminus(a,b)
sig=vowel_plus_octave(sig,opt... construct two artificial vowels with octaves in pitch. The imortant thing
sources=getsourceestimate(sig... method of class @signal
st=signal2spiketrain(sig) method of class @signal
str=getchange(sig,start1,stop... returns some information how the signal changes in the time at start1 and
t=getzerocrossings(signal,var... method of class @signal
time=firsttimebiggerzero(sig) method of class @signal
val=getbinvalue(sig,bin) method of class @signal
val=gettimevalue(sig,times) method of class @signal
val=rms(sig) method of class @signal
vals=getxvalues(sig) return all x values of the signal in one vector
w=getcenterofmass(sig) method of class @signal
writetofile(sig,name)
writetowavefile(sig,name)
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from Generic Signal Class by Stefan Bleeck
A generic class that allows easy signal (data in time) managment

w=getcenterofmass(sig)

% method of class @signal
% 
%   INPUT VALUES:
%  
%   RETURN VALUE:
%
% 
% (c) 2003, University of Cambridge, Medical Research Council 
% Stefan Bleeck (stefan@bleeck.de)
% http://www.mrc-cbu.cam.ac.uk/cnbh/aimmanual
% $Date: 2003/01/25 12:47:43 $
% $Revision: 1.4 $

function w=getcenterofmass(sig)

vals=getvalues(sig);
nr=getnrpoints(sig);

su1=0;
su2=0;

for i=1:nr
   su1=su1+vals(i)*i;
   su2=su2+vals(i);
end

if su2~=0
	w=su1/su2;
else
	w=nr/2;
end

Highlights from Generic Signal Class

Highlights from
Generic Signal Class