Wise Owl Answers - How do I speed up calculations in Excel VBA?
By Andrew GouldDownload files here https://www.wiseowl.co.uk/vba-macros/blogs/vba/variables-arrays/array-calculations/
This video explains how to use arrays in Excel VBA to dramatically improve the performance of code which performs calculations over many rows in an Excel worksheet. You'll see how to write a For Each loop to perform calculations the traditional way, including how to disable screen updates and automatic worksheet calculation to improve the performance of this code. You'll then learn how to populate an array with the values of a range of cells, loop through the array to calculate new values and then write the contents of the array into a range of cells. As a bonus, you'll also see how to redimension arrays, how to work with multiple arrays in the same procedure and how to use arrays to populate arguments of Excel worksheet functions.
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Chapters
00:00 The Question
00:37 The Sample Data
01:35 Writing a For Each Loop
03:51 Adding a Timer
05:47 Running the Procedure
07:11 Improving the Performance
08:54 Populating an Array with a Range
12:16 Looping Through an Array
16:08 Writing an Array to a Range
17:30 Comparing Performance with Arrays
18:17 Using Multiple Arrays
23:45 Using Arrays in Excel Functions
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