finding the lowest value in from peak to peak

[cloobless]

Hi, there. I'm trying (unsuccessfully) to figure out how to calculate column L. Is there a way to identify the low value in each sequence of K "days under" data in something like the L column faked below? The formulas I returned don't seem to be checking the whole sequence, or identify the wrong value, or neither. Thank you to anyone who might see this.

The columns are:
F is the value on any given date
H looks for the highest peak value and keeps outputting it until a new peak comes
K is a count of days in a row that the F-value is still under the peak
L -- looks at all the sequential days' values under last peak and determines which is the lowest. This is the formula I cannot solve.


Any ideas for L? Thank you very much.

 

[JustynaMK]

Hi cloobless,

Paste the following into cell M3 and confirm with Ctrl+Shift+Enter (array formula):

=IF(K3<>"New Peak",IF(F3=MIN(INDIRECT(ADDRESS(MATCH(2,1/(FIND("New Peak",$K$2:K3)))+2,6)):INDIRECT(ADDRESS(ROW()+MATCH("New Peak",K4:K1000,0)-1,6))),F3,""),"")

I'm certain a better solution exists but that's the only formula I could come up with. I hope it helps.

 

[cloobless]

JustynaMK, thank you *very* much. That works perfectly (and is impressive). Thank you for taking your time to help me; I really appreciate it.

 

[JustynaMK]

No problem at all! take care.

 

[cloobless]

JustynaMK, a quick question. If one (large) returns N/A, what does it mean? Is it the size of the range that is a problem? The formula works in the array just before this large array and after it, too...

 

[cloobless]

For example:

 

[JustynaMK]

Hi cloobless, which row number is that? And how many days are in the new peak?
Maybe also test individual components of the formula and let me know which one returns an error (enter the first one using Ctrl+Shift+Enter):
=ADDRESS(MATCH(2,1/(FIND("New Peak",$K$2:K37)))+2,6)
=ADDRESS(ROW()+MATCH("New Peak",K38:K1030,0)-1,6)
...also the red values need to be adjusted accordingly, as I do not know which row you are currently analyzing.

 

[markmzz]

Hi!

Try this Array Formula (use Ctrl+Shift+Enter and not just Enter to enter the formula) in L2 and copy down:

=IF(ISNUMBER(K2),IF(MIN(IF($H$2:$H$92=$H2,$F$2:$F$92))=$F2,$F2,""),"")

Where H2:H92 (Peak) and F2:F92 (Value) are the ranges of your data.

Markmzz

 

[markmzz]

Cloobless,

You can try too, this small modification in JustynaMK's formula (normal formula) in L2 and copy down:

=IF(ISNUMBER(K2),IF(F2=MIN(INDEX($F:$F,MATCH("ZZZZZ",$K$1:$K2)+1):
INDEX($F:$F,IFERROR(MATCH("New Peak",$K2:$K$92,0)+ROWS($L$2:$L2),$K$92))),F2,""),"")

Markmzz<strike></strike>
​

 

[JustynaMK]

Thanks @markmzz, another new thing for me to learn