83 lines
3.0 KiB
Matlab
83 lines
3.0 KiB
Matlab
function matlab_vectors = hypreParVectors2matlab(filename,num_of_vectors)
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%HYPREPARVECTORS2MATLAB Converts Hypre IJ Vectors to Matlab.
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%
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% This program was tested on Matlab 7.1.
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%
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% Description:
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% [matlab_vectors] = hypreParVectors2matlab(filename, num_of_vectors)
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% converts hypre formatted vectors, specified by the argument 'filename'
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% to matlab formatted vectors. Number of vectors to be converted is
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% given by the argument num_of_vectors
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%
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% Inputs:
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% filename = name of files without suffix
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% num_of_vectors = number of files containing vector description
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%
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% Example:
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% [matlab_vectors] = hypreParVectors2matlab( 'vectors', 5 ) converts
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% HYPRE vector represented in 5 input HYPRE files to MATLAB format.
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% HYPRE formatted vectors (filename is 'vectors', for 2 CPUs) are
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% represented as follows:
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% vectors.0.0 vectors.0.1 vectors.INFO.0.0 vectors.INFO.0.1
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% vectors.1.0 vectors.1.1 vectors.INFO.1.0 vectors.INFO.1.1
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% vectors.2.0 vectors.2.1 vectors.INFO.2.0 vectors.INFO.2.1
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% ...
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% The first line in vectors.0.0 and vectors.0.1 represents the
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% number of elements in that particular file
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% vectors.INFO.0.0 and vectors.INFO.0.1 contain information
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% about the size of the vector and the size of the particular file
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% For these two HYPRE formatted vectors
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% vectors.0.0 vectors.0.1 vectors.INFO.0.0 vectors.INFO.0.1
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% vectors.1.0 vectors.1.1 vectors.INFO.1.0 vectors.INFO.1.1
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% vectors.2.0 vectors.2.1 vectors.INFO.2.0 vectors.INFO.2.1
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% ...
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% the program will create a (size_of_vector)-by-2 matrices in matlab.
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%
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% See also matlabIJ2hypre, matlab2hypreParVectors.m,
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% hypreIJ2matlab.m, testIJmatlabhypre.m
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%
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% Author: Diana Zakaryan, Dept of Mathematics, University of Colorado,
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% Denver, 15-Mar-2005.
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%
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% empty vector
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matlab_vectors = [];
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% calls the actual program num_of_vectors time
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% in order to convert all num_of_vectors hypre vectors to matlab format
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for j=1:num_of_vectors
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s=int2str(j-1);
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filename2=strcat(filename,'.',s);
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% calls single vector convertor
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matlab_vector = hypreParVector2matlab(filename2);
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matlab_vectors = cat(2,matlab_vectors,matlab_vector);
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end
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function matlab_vector = hypreParVector2matlab(filename2);
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%read all the attributes of the specified filename
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%in the specified directory
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[stat,mess]=fileattrib(strcat(filename2,'.*'));
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%[pathstr,name,ext,versn]= fileparts(mess(1).Name);
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%empty vector
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matlab_vector=[];
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for i=1:size(mess,2)
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[pathstr,name,extension,versn]= fileparts(mess(i).Name);
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k = findstr('.INFO',name);
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if size(k) == 1
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continue;
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end
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% fills in with data
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filename_temp=strcat(name,extension);
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hypre_data = dlmread(filename_temp,'',1,0);
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if i==1
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matlab_vector = hypre_data;
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else
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matlab_vector=cat(1,matlab_vector,hypre_data);
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end
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clear ('hypre_data');
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end
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