Thanks Max, tried this but it is marking ones I do not want at all. the ones
I want with the X are ones that have duplicate specimin numbers but where
they are duplicate to identify the organism in Col B where it is different
e.g if two specimen numbers are the same then sometimes the organismis the
same but other times the organism is different and its when the organism is
different but with the same number I want these two duplicate numbers
identified, below is the result I got using your formula but it put an X on
ones that were not even duplicate numbers.sorry any other thoughts I'm lost.
Really when testing for the duplicates and got TRUE that it is a duplicate I
need some way of telling the formula to then look at the two organisms in COL
A with this dulilcate number in COL B and tell me if they are different
organisms or the same as I need to analyse the different ones so need to pick
them off
Staph. aureus MRSA MM502468L x
Enterococcus MM502468L x
Staph. aureus MRSA MM502481A x
Enterococcus MM502589K x
Enterococcus MM502589K
Enterococcus MM502601F x
Staph. aureus MRSA MT141828F x
Staph. aureus MRSA MT141832N x
Staph. aureus MRSA MY044041V x
"Max" wrote:
> Think you could try this in say, D1:
> =IF(COUNTA(A1:B1)<2,"",IF(SUMPRODUCT((A$1:A1=A1)*(B$1:B1=B1))>1,"","x"))
> Copy down as far as required to directly* mark all uniques based on col A &
> B with an "x".
>
> *Your col C is not required
> --
> Max
> Singapore
> http://savefile.com/projects/236895
> xdemechanik
> ---
> "Ber" wrote:
> > I have a spreadsheet with hundreds of rows and have specimen number
> > identifying specimens taken but sometimes this is done twice thus creating a
> > duplicate and this is not a problem as I have tested for duplicates using
> > =COUNTIF(B:B,B2)>1 and gives me True if the number is repeated but now I need
> > to know on the True resuts if the organism relating to the same number is
> > similar or different e.g A1 and A2 are True but have a different Organism
> > (Staph. aureus and MRSA
> > Enterococcus) but A4 and A5 are also True but have the same organism
> > (Enterococcus and Enterococcus so I m not interested in identifying these two
> > I just need the ones identified which are true but the organisms are
> > different that match the number, hope I've made this clear and someone can
> > help me as I am manually searchin the TRUES for the different organisms at
> > the moment and on 600 or more rows its getting hard.
> > A B C
> > Organism Specimen Number DUPLICATE
> > 1 Staph. aureus MRSA MM502468L TRUE
> > 2 Enterococcus MM502468L TRUE
> > 3 Staph. aureus MRSA MM502481A FALSE
> > 4 Enterococcus MM502589K TRUE
> > 5 Enterococcus MM502589K TRUE
> > 6 Enterococcus MM502601F FALSE
> > 7 Staph. aureus MRSA MT141828F FALSE
> > 8 Staph. aureus MRSA MT141832N FALSE
> > 9 Staph. aureus MRSA MY044041V FALSE
> >