在Matlab中获取Z给出X，Y的坐标

Question

我有一些带有x y z插补的 meshgrids 。我想从每个网格网格中获取z x和y。 防爆。我想知道每个meshgrid

在x=13 y=0.20上的z值是多少

[x y z]=meshgrid(x,y,z)
[x1 y1 z1]=meshgrid(x1,y1,z1)
[x2 y2 z2]=meshgrid(x2,y2,z2)

zOfxy=getz(13,0.20)
z1Ofx1y1=getz(13, 0.20)
z2Ofx2y2=getz(13, 0.20)

有没有现成的功能？我知道我可以绘制它并从中获取值，但很难得到z准确的数据

Answer 1

I don't think there is a built in function to retrieve all associated z values for a given x-y tuple. Since the arrays of X and Y values are sorted, you could use Fibonacci search. Computational complexity should be O(log n * log m), where n is the X cardinality and m is the Y cardinality.