OASIS Mailing List ArchivesView the OASIS mailing list archive below
or browse/search using MarkMail.


Help: OASIS Mailing Lists Help | MarkMail Help

office message

[Date Prev] | [Thread Prev] | [Thread Next] | [Date Next] -- [Date Index] | [Thread Index] | [List Home]

Subject: [OASIS Issue Tracker] Created: (OFFICE-2642) OpenFormula 5.5.1Array Notation flaunts convention

OpenFormula 5.5.1 Array Notation flaunts convention

                 Key: OFFICE-2642
                 URL: http://tools.oasis-open.org/issues/browse/OFFICE-2642
             Project: OASIS Open Document Format for Office Applications (OpenDocument) TC
          Issue Type: Bug
          Components: OpenFormula
    Affects Versions: ODF 1.2 Part 2 CD 1, ODF 1.2 Part 2 CD 2
            Reporter: Dennis Hamilton
             Fix For: ODF 1.2 Part 2 CD 3

In Section 5.5.1, the use of array dimensions is reversed from the conventional order.  That is, M x N is defined to mean, in OpenFormula, M columns and N rows, where the established notation is the reverse (M x N signifies M rows and N columns).  Similarly, the subscripts a[i,j] (using subscript formatting) are taken to mean the element of matrix A at column i and row j.  This is the reverse of the convention as well, where a[i,j] signifies the element in the i-th row and j-th column.

The consequence of this transposed approach to well-established matrix notation is that the definitions of common operations such as matrix multiplication in MMULT are clumsy and difficult to understand.  There seems to be no useful purpose in this change of notation and it will just make the understanding, review, and correct implementation of matrix-related functions prone to confusion and misunderstanding.

This message is automatically generated by JIRA.
If you think it was sent incorrectly contact one of the administrators: http://tools.oasis-open.org/issues/secure/Administrators.jspa
For more information on JIRA, see: http://www.atlassian.com/software/jira


[Date Prev] | [Thread Prev] | [Thread Next] | [Date Next] -- [Date Index] | [Thread Index] | [List Home]