mirror of https://github.com/jlizier/jidt
53 lines
2.0 KiB
Matlab
Executable File
53 lines
2.0 KiB
Matlab
Executable File
%%
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%% Java Information Dynamics Toolkit (JIDT)
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%% Copyright (C) 2012, Joseph T. Lizier
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%%
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%% This program is free software: you can redistribute it and/or modify
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%% it under the terms of the GNU General Public License as published by
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%% the Free Software Foundation, either version 3 of the License, or
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%% (at your option) any later version.
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%%
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%% This program is distributed in the hope that it will be useful,
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%% but WITHOUT ANY WARRANTY; without even the implied warranty of
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%% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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%% GNU General Public License for more details.
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%%
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%% You should have received a copy of the GNU General Public License
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%% along with this program. If not, see <http://www.gnu.org/licenses/>.
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%%
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% function jDoubleMatrix = octaveToJavaDoubleMatrix(octaveMatrix)
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%
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% Convert a native octave/matlab matrix to a java double 2D array
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%
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% Assumes the JIDT jar is already on the java classpath - you will get a
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% java classpath error if this is not the case.
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%
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function jDoubleMatrix = octaveToJavaDoubleMatrix(octaveMatrix)
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if (exist ('OCTAVE_VERSION', 'builtin'))
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% We're in octave:
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% Using 'org.octave.Matrix' is much faster than conversion cell by cell
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if ((rows(octaveMatrix)*columns(octaveMatrix)) > 1)
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% Do this the normal way
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tmp = javaObject('infodynamics.utils.OctaveMatrix');
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tmp.loadDoubleData(reshape(octaveMatrix,1,rows(octaveMatrix)*columns(octaveMatrix)),[rows(octaveMatrix), columns(octaveMatrix)]);
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jDoubleMatrix = tmp.asDoubleMatrix();
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else
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% For length 1 arrays, we need to perform a hack here or else
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% java thinks the length-one array is a scalar.
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% See octaveToJavaDoubleArray for a further description.
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% So instead we'll do this the slow way (doesn't matter for one element only)
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jDoubleMatrix = javaArray('java.lang.Double', 1, 1);
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jDoubleMatrix(1, 1) = octaveMatrix(1);
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end
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else
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% We're in matlab: the native matlab 2D array can be passed to java as is:
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jDoubleMatrix = octaveMatrix;
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end
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end
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