What is the simplest way to interpolate and lookup in an x,y table in excel?

Posted by dassouki on Super User See other posts from Super User or by dassouki
Published on 2013-07-28T12:07:59Z Indexed on 2013/11/08 4:01 UTC
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mathematica

I would like to do a lookup and interpolation based on x, y data for the following table. I'd like the equation to be as simple as possible to reduce the amount of possible errors. The full table is about 50 rows x 30 columns. I have about 20 of those tables. Here is an extract from one:

   A       B      C    D 
1        0.1    0.2   0.3 
2  2.4   450    300   50
3  2.3   500    375   52
4  2.1   550    475   55
5  1.8   600    600   60

For example, the equation should find the value for x = 2.27 and y = 0.15

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