contour plot for 3d data with x, y, z and c in matlab

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Hongxia Hao 2020-1-16

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https://ww2.mathworks.cn/matlabcentral/answers/500522-contour-plot-for-3d-data-with-x-y-z-and-c-in-matlab

评论： KSSV 2020-1-16

I have data in X, Y, Z, C format where all are 3d matrix, and C is the amplitude of the measurement at coordinate (X,Y,Z). I'd like to show this data as a contour plot where the contour color represents the value C(amplitude). How may I do that in matlab?

The X,Y,Z data are generated from meshgrid.

xi=linspace(1,5,50);
yi=linspace(1,5,50);
zi=linspace(1,5,50);
[X, Y, Z]=meshgrid(xi,yi,zi);
C = griddata(x,y,z,v,X,Y,Z,'natural');

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Answer 1

KSSV 2020-1-16

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https://ww2.mathworks.cn/matlabcentral/answers/500522-contour-plot-for-3d-data-with-x-y-z-and-c-in-matlab#answer_410353

Read abouit contour3, slice.

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Hongxia Hao 2020-1-16

I don't thinke either of contour3 or slice works. contour3 can only work on 2d arrays, where mine is 3d array. slice you have to define the slice location, however I want to show the whole surface.