A problem containing Interpolation

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George Rodriguez
George Rodriguez 2020-12-6
评论： Stephen23 2020-12-7
x= Generate 6 equally spaced data points x, which starts from 1 and ends at 15.
y = 2 x − 3
x2= Generate 40 equally spaced data points x2, which starts from 1 and ends at 15.
y2=Use linear interpolation to find theintermediate function values (y2) for x2 and generate a plot showing data pairs (x1, y1) as well as (x2, y2). In the plot, please title, label, legend and use color style appropriately.
CODE:
x=1:15:6;
y=2*x-3*randn(1:15:6);
x2=1:15:40;
y2=interp1(x,y,x2,'linear');
plot(x,y,'rx',x2,y2,'bo');
legend('original data','interpolation data');

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回答（1 个）

Setsuna Yuuki.
Setsuna Yuuki. 2020-12-7
You must change:
x=linspace(1,15,6); %%This line 6 equally spaced data points
y=2*x-3*randn(1,length(x)); %%This line
x2=linspace(1,15,40); %%This line Generate 40 equally spaced data points
y2=interp1(x,y,x2,'linear');
plot(x,y,'rx',x2,y2,'bo');
legend('original data','interpolation data');
title('Titulo uwu')

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