Pete, You still leave a lot unsaid such as whether the result is in a single fixed location, what if anything is in the even numbered rows of column C, whether any other column can be used for identification purposes, what if anything is below the most recent month's data, etc. You imply that there's no more than eight months worth of data so I guess C17 ends the series.
Without some of the information vacuum filled I'm not sure what we can do for you. -- Jim -----Original Message----- From: Piet van Oostrum <[email protected]> To: pete nikolic <[email protected]> Cc: [email protected] Sent: Fri, 24 Apr 2015 14:20 Subject: Re: [libreoffice-users] selecting cells in calc sheet pete nikolic wrote: > if we start as will be the case C3 will contain say 50 (the actual > dates are > of little importance ) a month later C5 will be say 47 and so on every > month > the next cell would be C7 then C9 then C11 what i need is to be able to > automatically pick the last 3 cells containing data so when C9 is filled > in then > it needs to automatically choose C9 C7 C5 and add them then divide by 3 > then > subtract a variable defined on the day .. > > Hope this makes it a little clearer > That would then be: IF(ISBLANK(C7);"";AVERAGE(C3;C5;C7)-30) -- Piet van Oostrum <[email protected]> WWW: http://pietvanoostrum.com/ PGP key: [8DAE142BE17999C4] -- To unsubscribe e-mail to: [email protected] Problems? http://www.libreoffice.org/get-help/mailing-lists/how-to-unsubscribe/ Posting guidelines + more: http://wiki.documentfoundation.org/Netiquette List archive: http://listarchives.libreoffice.org/global/users/ All messages sent to this list will be publicly archived and cannot be deleted -- To unsubscribe e-mail to: [email protected] Problems? http://www.libreoffice.org/get-help/mailing-lists/how-to-unsubscribe/ Posting guidelines + more: http://wiki.documentfoundation.org/Netiquette List archive: http://listarchives.libreoffice.org/global/users/ All messages sent to this list will be publicly archived and cannot be deleted
