Problem description & analysis:

The column below contains numeric values only:

	A
1	13
2	21
3	46
4	21
5	49
6	9
7	34
8	23
9	6
10	1
11	37
12	49
13	42
14	40
15	15
16	31
17	17
18	1147
19	18
20	30
21	22
22	4
23	25
24	19
25	13
26	27
27	38
28	30
29	16
30	12
31	23
32	3
33	23
34	19
35	14
36	46
37	23
38	37
39	38
40	28

We need to find out the maximum value and the 10 neighboring members both before and after it. Remember to perform out of bounds check as it is possible that the actual number of eligible values is less than 10.

	A
1	23
2	6
3	1
4	37
5	49
6	42
7	40
8	15
9	31
10	17
11	1147
12	18
13	30
14	22
15	4
16	25
17	19
18	13
19	27
20	38
21	30

Solution:

Use SPL XLL to enter the formula below:

=spl("=p=(d=?).pmax(),d.calc(p,~[-10:10])",A1:A40)

Picture1png

Explanation:

pmax()function gets the position of the maximum value. calc() function performs the computation according to the specified positions; ~ represents the current member, and [] gets members according to the interval specified by the relative positions, which automatically prevents the array index out of bounds.

esProc Desktop is now FREE to download. Please do not hesitate to try it by yourself! http://www.scudata.com/download-Desktop

In Excel, Find the Maximum Value and the Neighboring N Members Before and After

Subscribe to my newsletter

esProc

esProc