VBA - Large Arrays are inefficient

O

onair

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Sep 21, 2008
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Had to manipulate an array of 55 columns and 700 rows creating a new array of 5 columns and 700 rows summing 55 columns into 5 depending on the column header. Turned out to be extemely slow. Have to switch to the traditional Excel SUMIFs. Is it the number of columns that makes VBA arrays so inefficient?
 
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Rick, thank you for taking the time. The original array looked a little different so was the output. It is as if you would create a collection out of countries and then for each element of the colletion product an aggregated array by day.

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Excel Facts

What did Pito Salas invent?
Pito Salas, working for Lotus, popularized what would become to be pivot tables. It was released as Lotus Improv in 1989.
Bump:
Rick, thank you for taking the time. The original array looked a little different so was the output. It is as if you would create a collection out of the countries and then for each element of the collection produce an aggregated array by day. The final output would be the date column, five columns (one for each of the five countries) with summed values by country. In Excel you would be doing a SUMIF function by country - date combination.
 
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