Thread: [Solved] How can I make a table or chart to interpolate between values?
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Old 09-30-2016, 08:10 PM
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There are many possible interpolation algorithms. Perhaps the simplest is a linear one.
Suppose your dates (in ascending order) are in column A and the data are in column B and there are gaps in column B between rows 9 and 19. To generate a linear interpolation for the missing data, you could insert the following formula in B10 and copy down to B18:
=(B$9-B$18)/(A$9-A$18)+B9
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