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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
ABDULLA RAHIL 2016 年 5 月 5 日
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コメント済み: Steven Lord 2016 年 5 月 5 日
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
Alessandro Masullo 2016 年 5 月 5 日
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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Steven Lord
Steven Lord 2016 年 5 月 5 日
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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