www.gusucode.com > matlab 案例源码 matlab代码程序 > matlab/TwoDimensionalScatteredInterpolationExample.m
%% 2-D Interpolation % Copyright 2015 The MathWorks, Inc. %% % Define 200 random points. xy = -2.5 + 5*gallery('uniformdata',[200 2],0); x = xy(:,1); y = xy(:,2); %% % Sample an exponential function. These are the sample values for the interpolant. v = x.*exp(-x.^2-y.^2); %% % Create the interpolant. F = scatteredInterpolant(x,y,v); %% % Evaluate the interpolant at query locations ($xq$, $yq$). ti = -2:.25:2; [xq,yq] = meshgrid(ti,ti); vq = F(xq,yq); %% % Plot the result. figure mesh(xq,yq,vq); hold on; plot3(x,y,v,'o'); hold off;