If I have a number in one table column, how do I add a new column where the numbers in the second column depend on on the first column. For example, if the first column = 1, new column = 0, if first column = 4, new column = 0.2, if 9, new column = 0.5 etc. I don't want to replace the first column but want to add a second column that is based on the first. I feel I should be using if statements but am new to matlab and I just don't seem to be understanding how to use these yet.
I have attached a table to show how it should look. (The actual table has about 500,000 rows).
Much appreciated, Wendy