Using interp2 to interpolate points on a path

2014 5 21
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更新时间：2014 5 21
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load('ProjectTerrain.mat');
for k=1:500
xxx=[-4.8:k:4.8];
yyy=[4:k:-4.8];
a(k)=interp2(x,y,T,xxx,yyy);
end
I have a dataset of 3D terrain data that gives the elevation at certain points (x,y,T), and am trying to interpolate points on a path 500 steps long but am not sure how to start. The coordinates for the start and end points are in xxx and yyy.

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Chad Greene
Chad Greene 2014-5-21

0 个投票

The loop is unnecessary. Try something like this:
load('ProjectTerrain.mat')
xxx = linspace(-4.8,4.8,500);
yyy = linspace(4,-4.8,500);
TTT = interp2(x,y,T,xxx,yyy);

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