How do I correctly enter the function f(x,y)=sin((pi/2)*(x+y))?
4 views (last 30 days)
Show older comments
I need to calculate the value for the function using the blending interpolation reffering to x0=-1, x1=1, y0=-1, y1=1 in point (1/3,1/3).
3 Comments
Answers (2)
David Hill
on 27 May 2020
f=@(x,y)sin(pi/2*(x+y));
[X,Y]=meshgrid(-1:.2:1);%not sure what step size you are using
a=interp2(X,Y,f(X,Y),1/3,1/3);
0 Comments
madhan ravi
on 28 May 2020
Edited: madhan ravi
on 28 May 2020
% Option 1
x = [x0,x1];
y = [y0,y1]';
z = sin(pi/2*(x+y));
F = griddedInterpolant({x,y},z);
xq = 1/3;
yq = 1/3;
Interpolated = F({xq,yq})
% option 2
f=@(x,y)sin(pi/2*(x+y));
x0=-1;
x1=1;
y0=-1;
y1=1;
x = [x0,x1];
y = [y0,y1];
[xx,yy] = meshgrid(x,y);
% query points
xq = 1/3;
yq = 1/3;
Interpolated = interp2(xx,yy,f(xx,yy),xq,yq) % Interpolated = interp2(xx,yy,f(xx,yy),xq,yq, 'spline') use the method which suits you the best
2 Comments
madhan ravi
on 28 May 2020
Maybe you can try using live script , it’s very intuitive.
P.S: I’m not familiar with GUI myself.
See Also
Categories
Find more on Interpolation in Help Center and File Exchange
Products
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!