A problem containing Interpolation

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');

[Stephen23]

https://web.archive.org/web/20201207055541/https://www.mathworks.com/matlabcentral/answers/683273-a-problem-containing-interpolation

Answer 1

[Setsuna Yuuki.]

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')