From b2fc6c70434674d74551c3a6c01ffb3233499312 Mon Sep 17 00:00:00 2001 From: Willem Jan Palenstijn Date: Mon, 1 Jul 2013 22:34:11 +0000 Subject: Update version to 1.3 --- samples/s002_data2d.m | 60 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 60 insertions(+) create mode 100644 samples/s002_data2d.m (limited to 'samples/s002_data2d.m') diff --git a/samples/s002_data2d.m b/samples/s002_data2d.m new file mode 100644 index 0000000..37b5549 --- /dev/null +++ b/samples/s002_data2d.m @@ -0,0 +1,60 @@ +%------------------------------------------------------------------------ +% This file is part of the +% All Scale Tomographic Reconstruction Antwerp Toolbox ("ASTRA-Toolbox") +% +% Copyright: iMinds-Vision Lab, University of Antwerp +% License: Open Source under GPLv3 +% Contact: mailto:astra@ua.ac.be +% Website: http://astra.ua.ac.be +%------------------------------------------------------------------------ + +vol_geom = astra_create_vol_geom(256, 256); + +proj_geom = astra_create_proj_geom('parallel', 1.0, 384, linspace2(0,pi,180)); + + +% Create volumes + +% initialized to zero +v0 = astra_mex_data2d('create', '-vol', vol_geom); + +% initialized to 3.0 +v1 = astra_mex_data2d('create', '-vol', vol_geom, 3.0); + +% initialized to a matrix. A may be a single, double or logical (0/1) array. +A = phantom(256); +v2 = astra_mex_data2d('create', '-vol', vol_geom, A); + + +% Projection data +s0 = astra_mex_data2d('create', '-sino', proj_geom); +% Initialization to a scalar or a matrix also works, exactly as with a volume. + + +% Update data + +% set to zero +astra_mex_data2d('store', v0, 0); + +% set to a matrix +astra_mex_data2d('store', v2, A); + + + +% Retrieve data + +R = astra_mex_data2d('get', v2); +imshow(R, []); + + +% Retrieve data as a single array. Since astra internally stores +% data as single precision, this is more efficient: + +R = astra_mex_data2d('get_single', v2); + + +% Free memory +astra_mex_data2d('delete', v0); +astra_mex_data2d('delete', v1); +astra_mex_data2d('delete', v2); +astra_mex_data2d('delete', s0); -- cgit v1.2.3