define x and y for interpolation of scattered data
2 Ansichten (letzte 30 Tage)
Ältere Kommentare anzeigen
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');
0 Kommentare
Antworten (1)
KSSV
am 20 Jan. 2020
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]) ;
0 Kommentare
Siehe auch
Kategorien
Mehr zu Interpolation finden Sie in Help Center und File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!