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https://issues.apache.org/jira/browse/MADLIB-1006?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15322854#comment-15322854
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Frank McQuillan commented on MADLIB-1006:
-----------------------------------------
Thanks for the catch, Yui.
Yes that is a bug. e.g., in the simple examples in
matrix_extract_row
matrix_extract_col
in
http://madlib.incubator.apache.org/docs/latest/group__grp__matrix.html
it works for 1-9 but fails for 10 with errors like
{code}
InternalError: (psycopg2.InternalError) plpy.Error: Matrix error: The index
(10) is invalid compared to dimension size (10)
CONTEXT: Traceback (most recent call last):
PL/Python function "matrix_extract_col", line 24, in <module>
schema_madlib, matrix_in, in_args, 2, index)
PL/Python function "matrix_extract_col", line 1039, in matrix_extract
PL/Python function "matrix_extract_col", line 18, in _assert
PL/Python function "matrix_extract_col"
[SQL: 'SELECT madlib.matrix_extract_col(\'"mat_A"\', \'row=row_id,
val=row_vec\', 10);']
{code}
> invalid argument ranges in matrix_extract
> -----------------------------------------
>
> Key: MADLIB-1006
> URL: https://issues.apache.org/jira/browse/MADLIB-1006
> Project: Apache MADlib
> Issue Type: Bug
> Components: Module: Linear-Algebra Functions
> Reporter: Yui Noma
> Fix For: v1.9.1
>
>
> To whom it may concern,
> Hello, I'm a newbie to use MADlib in PostgreSQL 9.4. When I was reading the
> document, I may find a bug related to the functions, matrix_extract_row, and
> matrix_extract_col. The two function extract a row/col specified by the
> argument. But it does not work well for the last row/col. This is caused by
> the inconsistency related to the indices because the index of a MADlib matrix
> must start from 1 but the index of the function matrix_extract defined in
> ports/postgres/modules/linalg/matrix_ops.py_in starts from 0.
> Sincelery,
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