lookup table in matlab in matlab

In Matlab, a lookup table can be created using a table data type. Table data type is useful for storing tabular data such as text and numeric data. The table is a two-dimensional array where each column can have a different data type.

Suppose we want to create a lookup table with input values in column 1 and output values in column 2. Here's the example code:

main.m
% Create a lookup table
x = [1 2 3 4 5];
y = [10 20 30 40 50];
lookupTable = table(x', y', 'VariableNames', {'Input', 'Output'});

% Interpolate using the lookup table
inputValue = 2.5;
outputValue = interp1(lookupTable.Input, lookupTable.Output, inputValue);
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In this code, we created a table named lookupTable with input values in the first column (Input) and output values in the second column (Output). We then used the interp1() function for interpolation. The function returns an output value for an input value that is not present in the table.

We can also access the value in the lookup table using direct indexing. For example, to get the output value for an input value of 3, we can use:

main.m
outputValue = lookupTable.Output(lookupTable.Input == 3);
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This will return the output value 30.