I want to create a lookup table that have two columns the first one is alpha values and the second one is the values of lift coefficients CL corresponding to alpha . How can I do that ?

Creating a lookup table f code or my values

Walter Roberson 2020-7-19

how do you want to use the lookup table?

interp1 if the alpha are monotonic and you want to interpolate values.

If you want to look up by alpha value that is one of a discrete set then possibly containers.Map

Maryam Alshehhi 2020-7-19

I already have a big table of data that have 14 columns , from this table I want to create lookup table for the alpha column and the CL column corresponding to it ? How can I write the code ?

Walter Roberson 2020-7-19

In your table object that has 14 columns, are the alpha values monotonic?

When you go to use the lookup table, will the inputs be exactly (bit for bit identical) to one of the existing alpha values? Will the inputs be nearly identical to the existing alpha values except for round-off error? Or will the inputs be mostly different, with the expectation that interpolation will take place?

Maryam Alshehhi 2020-7-19

Yes , I want the lookup table to have the identical and the same alpha and CL that I have in the 14 columns one , but I don’t know how to write the code should I use LUT ?

Walter Roberson 2020-7-19

在 MATLAB Online 中打开

containers.Map

Or

[~, idx] = ismember(InputAlpha, YourTable. Alpha)
YourTable.CL(idx)

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