How to plot membership function of fuzzy logic in 3D

I would like to plot these figures attached in 3D using isosurface.

[Sam Chak]

isosurface() requires the volume data V. Do you have the data for such Type-3 Fuzzy Sets?

help isosurface

 ISOSURFACE  Isosurface extractor.
    FV = ISOSURFACE(X,Y,Z,V,ISOVALUE) computes isosurface geometry for
    data V at isosurface value ISOVALUE. Arrays (X,Y,Z) specify the points
    at which the data V is given. The struct FV contains the faces and
    vertices of the isosurface and can be passed directly to the PATCH
    command.
    
    FV = ISOSURFACE(V,ISOVALUE) assumes [X Y Z] = meshgrid(1:N, 1:M, 1:P) 
         where [M,N,P]=SIZE(V). 
    
    FV = ISOSURFACE(X,Y,Z,V) or FV = ISOSURFACE(V) selects an
    isosurface value automatically using the histogram of the
    data. 
    
    FVC = ISOSURFACE(..., COLORS) interpolates the array COLORS onto
    the scalar field and returns the interpolated values in
    facevertexcdata. The size of the COLORS array must be the same
    as V. 
    
    FV = ISOSURFACE(..., 'noshare') does not attempt to create
    shared vertices. This is faster, but produces a larger set of
    vertices.  
    
    FV = ISOSURFACE(..., 'verbose') prints progress messages to the
         command window as the computation progresses. 
    
    [F, V] = ISOSURFACE(...) or  [F, V, C] = ISOSURFACE(...)
    returns the faces and vertices (and facevertexcdata) in
    separate arrays instead of a struct. 
    
    ISOSURFACE(...) With no output arguments, a patch is created
    into the current axes with the computed faces and vertices. 
    If no current axes exists, a new axes will be created with 
    a 3-D view.
    
    Example 1:
       [x y z v] = flow;
       p = patch(isosurface(x, y, z, v, -3));
       isonormals(x,y,z,v, p)
       p.FaceColor = 'red';
       p.EdgeColor = 'none';
       daspect([1 1 1])
       view(3)
       camlight; lighting phong
 
    Example 2:
       [x y z v] = flow;
       q = z./x.*y.^3;
       p = patch(isosurface(x, y, z, q, -.08, v));
       isonormals(x,y,z,q, p)
       p.FaceColor = 'interp';
       p.EdgeColor = 'none';
       daspect([1 1 1]); axis tight; 
       colormap(prism(28))
       camup([1 0 0 ]); campos([25 -55 5]) 
       camlight; lighting phong
        
 
    See also ISONORMALS, ISOCAPS, SMOOTH3, SUBVOLUME, REDUCEVOLUME,
             REDUCEPATCH, SHRINKFACES.

    Documentation for isosurface
       doc isosurface

[MAB]

Thanks alot for your response I appreciate it I know the built in function in matlab (isosurafce ()) but i didn't have data for V I can't get a relation between x,y,z and V all I know That the 3D plot of the IT3MF is an isosurface with volume in between the layers of the surface formed by all the secondary IT2MFs (gauss ) in green color in the second plot attached which forms the domain of uncertainty (DOU) of IT3 FS