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?

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ABDULLA RAHIL 2016-5-5

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评论： Steven Lord 2016-5-5

采纳的回答： Alessandro Masullo

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?

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Alessandro Masullo 2016-5-5

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   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.

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ABDULLA RAHIL 2016-5-5

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 2016-5-5

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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.

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