Specify specific cell in the formula

I am working with mortality tables and my question is how can I specific a specific cell (e.g. the value of the variable discount_px when the age is 77)?

I have created this table containing four variables (Age, qx, px, discount_px)

Age qx px discount_px

75 0.038258 1 1

76 0.042116 0.96174 0.95602

77 0.046321 0.92124 0.91031

78 0.050916 0.87856 0.86298

79 0.055988 0.83383 0.81417

80 0.061493 0.78715 0.76402

If my formula is:

A = Age * (discount_px for age 77)

my outcome should be:

A = 77*0.91031

How can I specific in the formula that discount_px should take the value for age = 77?

Answer 1

[madhan ravi]

ix = TaBle.Age == 77;
A = TaBle.Age{ix, :} * TaBle.discount_px{ix, :}