spm_get_data.m
8a186cd82567master

spm_get_data.m
View Options

			function [Y] = spm_get_data(V,XYZ,check)
			% Get data from image files at specified locations
			% FORMAT [Y] = spm_get_data(V,XYZ,check)
			%
			% V - [1 x n] struct array of file handles (or filename matrix)
			% XYZ - [3 x m] or [4 x m] location matrix (voxel)
			% check - check validity of input parameters [default: true]
			%
			% Y - (n x m) double values
			%
			% See also spm_sample_vol
			%__________________________________________________________________________
			% Copyright (C) 2002-2012 Wellcome Trust Centre for Neuroimaging

			% Karl Friston
			% $Id: spm_get_data.m 5160 2012-12-21 16:58:38Z guillaume $

			if nargin < 3, check = true; end

			%-Ensure V is an array of handle structures
			%--------------------------------------------------------------------------
			if check && ~isstruct(V)
			V = spm_vol(V);
			try
			V = cat(2,V{:});
			end
			end

			%-Get data
			%--------------------------------------------------------------------------
			Y = zeros(length(V),size(XYZ,2));
			for i = 1:length(V)

			%-Check files exists and try current directory otherwise
			%----------------------------------------------------------------------
			if check && ~spm_existfile(V(i).fname)
			[p,n,e] = fileparts(V(i).fname);
			V(i).fname = [n,e];
			end

			%-Load data
			%----------------------------------------------------------------------
			try
			Y(i,:) = spm_sample_vol(V(i),XYZ(1,:),XYZ(2,:),XYZ(3,:),0);
			catch
			fprintf('Error with file %s\n',V(i).fname);
			rethrow(lasterror);
			end

			end