How to adjust the surface and contour in a surfc/meshc

Im having trouble plotting 3D data using surfc/meshc function. Im not able to adjust the gap between contour and surface graph. Im using the following code

xyz=[1.7 3.52 2.0 8.0 -150.5 -149.85]; f=load('adia_chpd.dat'); x=f(:,1); y=f(:,2); z1=f(:,3); xlin=linspace(min(x),max(x),60); ylin=linspace(min(y),max(y),60); [X,Y]=meshgrid(xlin,ylin); Z1=griddata(x,y,z1,X,Y,'linear'); %contour(X,Y,Z1,20,'LineWidth',2); C=gradient(Z1); %meshc(X,Y,Z1,C); surfc(X,Y,Z1,C,'FaceColor','none','EdgeColor','red'); axis(xyz) ylabel('$\mathbf{R(a_\circ)}$','Interpreter','latex','FontSize',15,'FontWeight','bold','VerticalAlignment','middle') xlabel('$\mathbf{r(a_\circ)}$','Interpreter','latex','FontSize',15,'FontWeight','bold','VerticalAlignment','bottom') set(gca,'FontSize',15,'LineWidth',2.0)

It gave me the following output

I want to get a plot that look like the following

How can I do that? Pls help

Answer 1

[John BG]

If you lift the data, you decide the distance the surface shows up above X Y reference plane. It's not exactly your adia_chpd.dat, because you have not supplied it, but I have used a similar function:

x=0:1:100
[X,Y]=meshgrid(x)
Z=100+(-100+100*exp(-.001*X))./(0.01*exp(X/10))+(-100+100*exp(-.001*Y))./(0.01*exp(Y/10))
figure(1);mesh(Z)

C=gradient(Z);          
figure(2);meshc(X,Y,Z,C);

just pull up when you extract z1:

z1=149.9-113+f(:,3)

with the surface I use:

Z2=150+(-100+100*exp(-.001*X))./(0.01*exp(X/10))+(-100+100*exp(-.001*Y))./(0.01*exp(Y/10))
figure(3);mesh(Z2)

C2=gradient(Z2);          
figure(4);meshc(X,Y,Z2,C2);

Please if you find this answer useful, click on the thumbs-up above, thanks

John

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[SAHEER VC]

Thank you John. It works but it also changes the z-axis scale that I dont want to. The second plot in my question is just a sample (I got it from an article). I want to plot my data with the same scale but there should be enough gap between surface and contour (as is given in the sample plot). I am attaching my data file here