This will create another array that shows only
every 2nd row and 5th column. Create a chart from that.
Assume your data looks like this:
13 14 15 16 17 18 19 20 21 22 23
14 15 16 17 18 19 20 21 22 23 24
15 16 17 18 19 20 21 22 23 24 25
16 17 18 19 20 21 22 23 24 25 26
17 18 19 20 21 22 23 24 25 26 27
Name it ArrayA.
Define two more names, like this:
Insert > Name > Define > Names in workbook: Rown
Refers to: =ROW(INDEX($A:$A,1):INDEX($A:$A,ROWS(ArrayA)))
Insert > Name > Define > Names in workbook: Coln
Refers to: =COLUMN(INDEX($1:$1,1):INDEX($1:$1,COLUMNS(ArrayA)))
Create another 5x11 array with this array formula
=ArrayA*(MOD(Rown,2)=1)*(MOD(Coln,5)=1)
It should look like this:
13 0 0 0 0 18 0 0 0 0 23
0 0 0 0 0 0 0 0 0 0 0
15 0 0 0 0 20 0 0 0 0 25
0 0 0 0 0 0 0 0 0 0 0
17 0 0 0 0 22 0 0 0 0 27
Now remove all the zeros.
Copy > Paste Special > Values
Edit > Replace > 0 > Replace All
Edit > GoTo > Special > Blanks
Edit > Delete > Shift cells left
Edit > GoTo > Special > Blanks
Edit > Delete > Shift cells up
The final array will look like this:
13 18 23
15 2 25
17 22 27