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## Matrix like operations in a .oct file

**From**: |
babelproofreader |

**Subject**: |
Matrix like operations in a .oct file |

**Date**: |
Wed, 2 Oct 2013 08:22:58 -0700 (PDT) |

I'd like to write concise code in a .oct file to perform matrix
multiplication on the input column vector. The function internally creates,
for example, a row vector A of 11 elements, and then within a loop I want to
perform A * B where B is an 11 element sliding window down the input column
vector, writing the result to an output column vector as the loop
progresses. I've tried various approaches using the information on
http://wiki.octave.org/Tips_and_tricks but I can't get anything to compile -
some of the typical errors I'm getting are:
no matching function for call to ‘ColumnVector::extract(octave_idx_type,
int, octave_idx_type&, int)
cannot convert ‘RowVector’ to ‘double’ in assignment
Any pointers?
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**Matrix like operations in a .oct file**,
*babelproofreader* **<=**