maroi_matrix

PURPOSE

SYNOPSIS

DESCRIPTION

 method to convert shape objects to maroi_matrix objects

 $Id$

CROSS-REFERENCE INFORMATION

• isempty overloaded isempty method for mardo object
• paramfields returns struct with fields from maroi object useful for copying objects
• maroi_matrix maroi_matrix method - converts roi to maroi matrix type
• native_space native_space method - returns native space of object
• paramfields returns struct with fields from maroi object useful for copying objects
• voxpts voxpts method - voxels within a box in given space
• maroi_matrix maroi_matrix method - converts maroi_image to maroi_matrix
• maroi_matrix maroi_matrix - class constructor
• native_space native_space method - returns native space of object
• voxpts voxpts method - returns 3xN ijk matrix in voxels
• maroi_matrix maroi_matrix method - converts roi to maroi matrix type
• native_space native_space method - returns native space of object
• voxpts voxpts method - returns 3xN ijk matrix in voxels
• maroi_matrix method to convert shape objects to maroi_matrix objects
• voxpts voxpts method - voxels within a sphere in given space

• are_same returns 1 if rois are the same
• back2base back2base method - check for spacebase, transform thereto
• rle run length encoding method
• save_as_image method save_as_image - saves ROI as image
• flip_lr flips ROI left / right
• maroi_image maroi_image - class constructor
• maroi_matrix maroi_matrix method - converts maroi_image to maroi_matrix
• maroi_matrix maroi_matrix - class constructor
• matrixdata matrixdata method - gets matrix from ROI object
• maroi_matrix maroi_matrix method - converts roi to maroi matrix type
• voxpts voxpts method - returns 3xN ijk matrix in voxels
• maroi_matrix method to convert shape objects to maroi_matrix objects
• mars_build_roi builds ROIs via the SPM GUI
• mars_display_roi utility routines for display of ROIs in graphic window
• mars_rois2img creates cluster or number labelled ROI image from ROIs

SOURCE CODE

0001 function o2 = maroi_matrix(o, space)
0002 % method to convert shape objects to maroi_matrix objects
0003 %
0004 % $Id$
0005 
0006 if nargin < 2
0007   space = [];
0008 end
0009 if isempty(space)
0010    space = native_space(o);
0011 end    
0012 if isempty(space)
0013    error('Need space to create maroi_matrix');
0014 end
0015 
0016 params = paramfields(o);
0017 params.mat = space.mat;
0018 dim = space.dim(1:3);
0019 params.dat = zeros(dim);
0020 
0021 [pts vals] = voxpts(o, space);
0022 dinds = pts(1,:) + ...
0023     (pts(2,:)-1) * dim(1) + ...
0024     (pts(3,:)-1) * dim(1)*dim(2);
0025 
0026 params.dat(dinds) = vals;
0027 o2 = maroi_matrix(params);