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*Subject*: **LOOKUP function**

*From*:**Kohei Yoshida <kyoshida@novell.com>***To*: office-formula@lists.oasis-open.org*Date*: Mon, 25 Feb 2008 11:30:17 -0500

Hi list, While working on implementing a revised version of LOOKUP function for OOo Calc, I've noticed some behaviors of this function in Excel that are not yet touched by the ODFF spec. Let me just present snippets from my note below. This only applies to the 3-parameter case. * 3-parameter case ([lookup value], [lookup matrix], [result matrix(vector)]) 1) The lookup matrix does not need to be a vector. If it's not a vector only the first column or row gets searched (= search vector). [NOTE: the ODFF spec requires this to be a vector, but Excel does not.] 2) The directions of the lookup matrix and the result matrix can differ. [NOTE: the ODFF spec does not mention this.] 3) The lengths of the search vector and the result vector do not need to be identical; however, when the match position falls outside the length of the result vector, an error is raised if the result vector is given as an array object. If it's a cell range, it gets automatically extended to the length of the searched vector. If the cell range cannot be extended due to size limit, then '0' is displayed. [NOTE: the ODFF spec requires the search vector and the result vector to be of the same length.] -- Kohei Yoshida - OpenOffice.org Engineer - Novell, Inc. <kyoshida@novell.com>

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