MATLAB: Add a marker to surf plot

figuremarkerplotsurf

Hi,

Can someone please tell me how I can add a marker to a figure which is plotted using surf. This is my code, but it doesn't show the marker. Thanks.

 figure; h=surf(X,Y,Z,'FaceLighting','phong');
 view([0,90]); colormap(hot); cb=colorbar; 
 h.EdgeColor='none'; shading('interp'); 
 hold on
 plot(32,-32,'rx')

Best Answer

You've got the surface occluding the z-axis values -- to make the point show try something like

ZMax=max(Z(:));
plot3(x,y,ZMax,'rx')

and joy should ensue...

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MATLAB: Scatter3: How to change the size of a particular marker

This puzzled me for a bit -- until I read the documentation a bit more carefully.

For scatter3, the marker size specified is the area of the marker. (In other plot types such as the plot command, it is the width of the marker.)

The default marker area is 36 points squared, so you actually made it a bit smaller.

N = 50;
figure
hold on
scatter3(rand(N,1),rand(N,1),rand(N,1))
scatter3(0.5,0.5,0.5,3000) % I made your value a lot bigger

MATLAB: Duplicate plot in 4

[x,y] = meshgrid(-2:.2:2);
z = exp(-(x.^2 +y.^2));
% Part 1
surf(x,y,z);
colormap(hot)
hold on
% 

x2 = x+4 ;
y2 = y ;
z2 = z ;
surf(x2,y2,z2);
% 
x3 = x ;
y3 = y+4 ;
z3 = z ;
surf(x3,y3,z3);
%
x4 = x2 ;
y4 = y3 ;
z4 = z ;
surf(x4,y4,z4);

Best Answer

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MATLAB: Scatter3: How to change the size of a particular marker

MATLAB: Duplicate plot in 4

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