From 3cae1d138c53a3fd042de3d2c9d9a07cf0650e0f Mon Sep 17 00:00:00 2001 From: "Daniel M. Pelt" Date: Tue, 24 Feb 2015 12:35:45 +0100 Subject: Added Python interface --- samples/matlab/s002_data2d.m | 60 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 60 insertions(+) create mode 100644 samples/matlab/s002_data2d.m (limited to 'samples/matlab/s002_data2d.m') diff --git a/samples/matlab/s002_data2d.m b/samples/matlab/s002_data2d.m new file mode 100644 index 0000000..a91071f --- /dev/null +++ b/samples/matlab/s002_data2d.m @@ -0,0 +1,60 @@ +% ----------------------------------------------------------------------- +% This file is part of the ASTRA Toolbox +% +% Copyright: 2010-2015, iMinds-Vision Lab, University of Antwerp +% 2014-2015, CWI, Amsterdam +% License: Open Source under GPLv3 +% Contact: astra@uantwerpen.be +% Website: http://sf.net/projects/astra-toolbox +% ----------------------------------------------------------------------- + +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