Data segmenting according to specific total of a column

[terryhenderson]

I have a worksheet with two columns: ColA with over 320,000 rows of data of file sizes in bytes, and ColB which contains the equivelant value of ColA in megabytes.

I am in need to divide ColA data into segements separated with one empty row. Dividing should occure when the total value of ColB reaches around 900 megabyte more or less.

In addition, each segment's total of megabytes besides the total number of rows for that segment should be placed in the last row of that segment in ColC and ColD.

I am attaching part of my real data in both columns A & B in Sheet1. I have also manually caculated and segmented the first two groups of ColA in Sheet2 as an example of the final product.

Can I get some expert assistance with this request please?

Many thanks in advance.

T.

[Kaper]

Such macro (for large files may not be quick - if you have many of them and need quicker processing - let us know) shall do the work:

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[terryhenderson]

More than excellent Kaper .. really fantastic .. the desired result is achieved through your genius code which ran smoothly and fast despite the large number of rows.
Thank you very much for such great work.
Please accept my deep respect and gratitude.

T.

[PCI]

Another way to do, should be faster ...!

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[terryhenderson]

Thank you very much PCI, you have always been of a great assistance to me in many issues, and here, again, you're proving that. Sure your code does the job as exactly as desired, which is enriching this question with such amazing code. I hope this question will be of great benefit to the general who have a similar issue.

Merci beaucoup, je suis très reconnaissant.

T.

[PCI]

Content d'avoir aider, à une prochaine fois.
Please to help, see for next time