i have a number of cars in 2007 per 1000 people which is 290 , how can I make forecast the number at 2014, by simple way in matlab?

i have a number of cars in 2007 per 1000 people which is 290 , how can I make forecast the number at 2014, by simple way in matlab?

Answer 1

[Alessandro Masullo]

   years = 2001:2005;
   cars = 100:100:500;
   new_year = 2010;
   interp1(years,cars,new_year,'linear','extrap')

As an alternative, you can use 'spline' instead of linear.

[ABDULLA RAHIL]

thanks for your help but in my case i have 290 per 1000 people in 2007 and i want to see the number in 2015

[Steven Lord]

Extrapolating from a single data point, the "right" answer could be anything. So just choose the answer to Life, the Universe, and Everything: 42.

answer = 42;

If you have more than just a single data point, and if you're careful about not extrapolating too far, use interp1 as Alessandro showed.