substract two columns of a table in matlab

Suppose you have a table T with columns Column1 and Column2. The following code will create a new column named Column3 with the difference of Column1 and Column2.

main.m
T.Column3 = T.Column1 - T.Column2;
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You can also subtract a scalar value from a column like this:

main.m
T.Column3 = T.Column1 - 10;
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Note that this will subtract 10 from each element of Column1 and create a new column Column3 with the result.