Formula for growth chart?

We have a chart that we use to check the growth in babies. The first column
(A1:A250) is the baby's age (text format in weeks and days, ie 25w3d). The
columns B2:J2 are titles as 1st, 5th, 10th, 25th, 50, 75th, 90th, 95th, and
99th percentile. The cells B3:J250 are numbers related to babies weight. We
measure the baby's weight and enter the value in a cell K2. We also enter the
age of the baby in another cell K3.
Is there a formula that when we enter the values for K2 and K3, the result
appear in another cell K4 and show us the closest percentile for a that baby?
The formula must look at the age first and go along that row to find closest
number to the weight and then move up in that column to get to the title of
that column(for example 50th Percentile) and show the "50th Percentile" in K4
cell.
Thank you in advance,
DORI

One way, perhaps this might suffice ..

Sample construct at:
http://cjoint.com/?lwkWZBtppZ
GrowthChart_Formula_Dori_wks.xls

Put in K4:
=INDEX($A$2:$J$2,MATCH(K2,OFFSET($A$2:$J$2,MATCH(K3,A3:$A$250,0),),1))

The above assumes that the wts are in ascending order from the 1st to 99th
percentiles (logically so? <g>), and uses match_type 1 to locate the largest
value that is less than or equal to lookup_value for the percentile
--
Rgds
Max
xl 97
---
Singapore, GMT+8
xdemechanik
http://savefile.com/projects/236895
--
"DORI" <[email protected]> wrote in message
news:[email protected]...
> We have a chart that we use to check the growth in babies. The first
column
> (A1:A250) is the baby's age (text format in weeks and days, ie 25w3d). The
> columns B2:J2 are titles as 1st, 5th, 10th, 25th, 50, 75th, 90th, 95th,
and
> 99th percentile. The cells B3:J250 are numbers related to babies weight.
We
> measure the baby's weight and enter the value in a cell K2. We also enter
the
> age of the baby in another cell K3.
> Is there a formula that when we enter the values for K2 and K3, the result
> appear in another cell K4 and show us the closest percentile for a that
baby?
> The formula must look at the age first and go along that row to find
closest
> number to the weight and then move up in that column to get to the title
of
> that column(for example 50th Percentile) and show the "50th Percentile" in
K4
> cell.
> Thank you in advance,
> DORI

Oops, lines:

> Put in K4:
> =INDEX($A$2:$J$2,MATCH(K2,OFFSET($A$2:$J$2,MATCH(K3,A3:$A$250,0),),1))

should have read as:

Put in the formula bar for K4,
then array-enter the formula by pressing CTRL+SHIFT+ENTER
(instead of just pressing ENTER):
=INDEX($A$2:$J$2,MATCH(K2,OFFSET($A$2:$J$2,MATCH(K3,A3:$A$250,0),),1))

(The formula needs to be array-entered)
--
Rgds
Max
xl 97
---
Singapore, GMT+8
xdemechanik
http://savefile.com/projects/236895
--

Try this revised array formula which provides better results ..

Revised sample construct at:
http://cjoint.com/?lwoVBRGV6q
Revised_GrowthChart_Formula_Dori_wks.xls

Put in K4, then array-enter the formula by pressing CTRL+SHIFT+ENTER
(instead of just pressing ENTER):

=INDEX($A$2:$J$2,
MATCH(INDEX(OFFSET($B$2:$J$2,MATCH(K3,A3:$A$250,0),),
MATCH(MIN(ABS(OFFSET($B$2:$J$2,MATCH(K3,A3:$A$250,0),)-K2)),
ABS(OFFSET($B$2:$J$2,MATCH(K3,A3:$A$250,0),)-K2),0)),
OFFSET($A$2:$J$2,MATCH(K3,A3:$A$250,0),),1))

--
Rgds
Max
xl 97
---
Singapore, GMT+8
xdemechanik
http://savefile.com/projects/236895
--

Dear Max,
Thank you SO MUCH. You area a genius! You saved us a lot of work. I did what
you gave me and it works great.
Thanks again,
Dori

"Max" wrote:

> Try this revised array formula which provides better results ..
>
> Revised sample construct at:
> http://cjoint.com/?lwoVBRGV6q
> Revised_GrowthChart_Formula_Dori_wks.xls
>
> Put in K4, then array-enter the formula by pressing CTRL+SHIFT+ENTER
> (instead of just pressing ENTER):
>
> =INDEX($A$2:$J$2,
> MATCH(INDEX(OFFSET($B$2:$J$2,MATCH(K3,A3:$A$250,0),),
> MATCH(MIN(ABS(OFFSET($B$2:$J$2,MATCH(K3,A3:$A$250,0),)-K2)),
> ABS(OFFSET($B$2:$J$2,MATCH(K3,A3:$A$250,0),)-K2),0)),
> OFFSET($A$2:$J$2,MATCH(K3,A3:$A$250,0),),1))
>
> --
> Rgds
> Max
> xl 97
> ---
> Singapore, GMT+8
> xdemechanik
> http://savefile.com/projects/236895
> --
>
>
>

Thanks for the feedback !
Pleased to hear it worked for you.
--
Rgds
Max
xl 97
---
Singapore, GMT+8
xdemechanik
http://savefile.com/projects/236895
--
"DORI" <[email protected]> wrote in message
news:[email protected]...
> Dear Max,
> Thank you SO MUCH. You area a genius! You saved us a lot of work. I did
what
> you gave me and it works great.
> Thanks again,
> Dori