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## Change the row-to-row increment value when copying down a column, from +1 to +300

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Occasional Contributor

# Change the row-to-row increment value when copying down a column, from +1 to +300

My formula in cell H5 is "=SLOPE('Data 300 Counts'!G903:G1200, 'Laser Pixel Data'!\$H\$3:\$H\$300)"

I want to copy this down the column so that H6 is "=SLOPE('Data 300 Counts'!G1203:G1500, 'Laser Pixel Data'!\$H\$3:\$H\$300)
...and H7 is "=SLOPE('Data 300 Counts'!G1503:G1800, 'Laser Pixel Data'!\$H\$3:\$H\$300)
etc etc

The auto-increment behavior is to make the H6 range be G904:G1201, incrementing the values by one each time.  I need the increment value to be +300 rather than +1.

Thank you.

7 Replies
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Solution

# Re: Change the row-to-row increment value when copying down a column, from +1 to +300

The idea is

`=SLOPE(INDEX('Data 300 Counts'!G:G,903+300**(ROW()-ROW(\$A\$5))):INDEX('Data 300 Counts'!G:G,1200+300**(ROW()-ROW(\$A\$5))), 'Laser Pixel Data'!\$H\$3:\$H\$300)`
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# Re: Change the row-to-row increment value when copying down a column, from +1 to +300

One way of achieving this is to use OFFSET

= SLOPE( OFFSET( CountsBlock, 300*k, 0 ), PixelData )

where 'k' is a relative reference to the helper column {0,1,2, …} and 'CountsBlock' is the first block

='Data 300 Counts'!G903:G1200.

Other options include using INDEX:INDEX for a non-volatile solution or cobbling something together using ROW to give a formula for the sequence 'k'.

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# Re: Change the row-to-row increment value when copying down a column, from +1 to +300

Yes, that did the trick, thank you.
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# Re: Change the row-to-row increment value when copying down a column, from +1 to +300

Thank you for the response. I got it to do what I needed.

This is my first experience attempting to use expressions to fill in the inputs into other functions. I've always been able to just do the smaller operations in their own cells, and then piece them together, but I had so many iterations this time it would have taken too long to construct them all that way.
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# Re: Change the row-to-row increment value when copying down a column, from +1 to +300

@Craig_Gallagher , you are welcome. That was misprint in the formula like 300**( instaed of 300*(

Sorry for that, mistake with copy/paste.

# Re: Change the row-to-row increment value when copying down a column, from +1 to +300

No trouble! I found it pretty quickly. You got me 99.9999% of the way there. Thanks again.
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# Re: Change the row-to-row increment value when copying down a column, from +1 to +300

@Sergei BaklanI am working on a similar issue that is driving me nuts.  I am trying to copy the formula below across many columns. This is a complex spreadsheet where we are referencing data vertically down through many rows, and then creating a horizontal map across many columns.  What I basically need to do is increment the F30 to F31, F32, F33, etc... as the formula is copied across.  With no dollar sign, the rows increment from F30 to G30, H30, etc., and with the dollar sign in place before F30, it freezes the F30 so that it shows up in each formula.  The H15 is incrementing as it should to I15, J15, K15, etc...

=IF(ISERROR(\$F30),"",VLOOKUP(H15,\$B\$29:\$F\$9999,5,FALSE))