Home > phiwave > @phiw_wvimg > all_null.m

all_null

PURPOSE

returns 1 if all values in object images are NaN or zero

SYNOPSIS

function tf = all_null(obj)

DESCRIPTION

 returns 1 if all values in object images are NaN or zero

 $Id: all_null.m,v 1.1 2005/05/30 16:41:43 matthewbrett Exp $

CROSS-REFERENCE INFORMATION

This function calls:

doproc performs any necessary processing on wvimg object
end end method for phiw_wvimg object

This function is called by:

get_wdimg calculates and returns denoised image in voxel space

SOURCE CODE

0001 function tf = all_null(obj)
0002 % returns 1 if all values in object images are NaN or zero
0003 %
0004 % $Id: all_null.m,v 1.1 2005/05/30 16:41:43 matthewbrett Exp $
0005   
0006 tf = 1;
0007 obj = doproc(obj);
0008 img = obj.img(:);
0009 img = img(~isnan(img));
0010 if isempty(img), return, end
0011 tf = all(img == 0);