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I'm trying to perform a matrix multiplication on a simple 3 X 3 matrix using Pig. I'm neither unable to perform transpose nor group according to the row.

Can someone help me on this please.

Example

Matrix A: 

2  2  2 
2  2  2
2  2  2

Matrix B:

1  1  1
1  1  1    
1  1  1

Thanks in advance !

Mzf
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Anil
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    What have you tried so far? How are the matrices stored? Is A a relation where each row is a tuple with the matrix row? Is A a relation where each relation is a bag with a matrix in it (several matrices in one relation or only one in each relation)? – Balduz May 07 '15 at 08:48

1 Answers1

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Assuming your matrices are stored as "row, column, value", you can check this

Also if you have a txt file for the same, you can load that by:

E = LOAD 'matrix1.txt' USING PigStorage(',') AS (row:chararray, col:chararray, val:float);

OR

E = LOAD 'M-matrix-small.txt' USING PigStorage(',') AS (row, col, val);
Community
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BrijD
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