define x and y for interpolation of scattered data
조회 수: 2 (최근 30일)
이전 댓글 표시
I have the following data in excel, which is a 20*20 table. I need to interpolate base on available data for the whole table. So, I wanna know how to define x and y of the data in the following code.
numdata = xlsread ('basic file');
x=
y=
[xq,yq] = meshgrid(1:1:20, 1:1:20);
vq = griddata(x,y,v,xq,yq,'nearest');
댓글 수: 0
답변 (1개)
KSSV
2020년 1월 20일
Let A be the matrix, which is of size m*n
x = 1:n ;
y = 1:m ;
[X,Y] = meshgrid(x,y) ;
xq = 1:0.5:n ;
yq = 1:0.5:m ;
[Xq,Yq] = meshgrid(xq,yq) ;
Ai = interp2(X,Y,A,Xq,Yq) ;
Alrernatively, you can also use
Ai = imresize(A,[100,100]) ;
댓글 수: 0
참고 항목
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!