Home > eeg > egis > net_utils > oned_pos.m

oned_pos

PURPOSE ^

SYNOPSIS ^

function oned_array = oned_pos(good_chan,xelec,yelec,zelec,radius,calc_type)

DESCRIPTION ^

CROSS-REFERENCE INFORMATION ^

This function calls: This function is called by:

SOURCE CODE ^

0001 function oned_array = oned_pos(good_chan,xelec,yelec,zelec,radius,calc_type)
0002 
0003 [az,el,r] = cart2sph(xelec,yelec,zelec);
0004 
0005 el = pi*ones(size(el,1),size(el,2))/2 - el;
0006 
0007 if calc_type == 's'
0008         
0009     oned_array = az(good_chan) - az(good_chan(1))*ones(size(good_chan,1),size(good_chan,2));
0010 
0011 elseif calc_type == 'g'
0012     
0013     zeroptaz = az(good_chan(1))*ones(size(good_chan,1),size(good_chan,2));
0014     zeroptel = el(good_chan(1))*ones(size(good_chan,1),size(good_chan,2));
0015 
0016     azgood = az(good_chan);
0017     elgood = el(good_chan);
0018 
0019     abgdist = acos(cos(elgood).*cos(zeroptel)+sin(elgood).*sin(zeroptel).*cos(azgood - zeroptaz));
0020 
0021     abgdist = abgdist*radius;
0022 
0023 else
0024 
0025     error('unknown array type');
0026 
0027 end;
0028 
0029 
0030     
0031 
0032

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