How to smooth a surface of 3-d geometry

I have three column vectors Xm, Ym and Zm. I plotted these vectors as below code:

k = boundary(Xm,Ym,Zm,1);

trisurf(k, Xm,Ym,Zm,'edgecolor','none','facecolor','m', 'facealpha',0.5)

I got a object by above code. I want to smooth the surface of this 3-d object

[VANDANA GUPTA]

i used the 'smooth' function but i can't observe the how much smoothness is getting..i am not getting that is this function appropriate or not.......please help me...

[KALYAN ACHARJYA]

Can you share output figure?

[VANDANA GUPTA]

sir this is the output figure of vectors Xm, Ym and Zm using boundary function

Answer 1

[KSSV]

Are you looking for something like this?

dt = delaunayTriangulation(Xm,Ym) ;
t = dt.ConnectivityList ; 

x = dt.Points(:,1) ; 
y = dt.Points(:,2) ; 

F = scatteredInterpolant(Xm,Ym,Zm) ; 
z = F(x,y) ; 
trisurf(t,x,y,z,'EdgeColor','k')

[VANDANA GUPTA]

sir, i want to smooth the straight edges and angular corners i.e. roughness of geometry which is getting from Xm, Ym and Zm..

[VANDANA GUPTA]

i searched about smoothness..In matlab, 'smooth', 'smooth3', 'sgolayfilt' and 'smoothdata' functions are used for smoothing the figure.. I cant observe that the which function will be giving the best and how much smoothness in result..