SHADOWPLOT

Add a shadow to an existing surface plot.

Description

SHADOWPLOT Add a shadow to an existing surface plot
 
For some surface plots, it can be helpful to visualize the shadow (2D projection) of the surface. This can give a quick perspective on the data's variance.
 
SHADOWPLOT PLANE Adds a shadow plot on the PLANE boundary

PLANE can be:
x, y, or z: Plots on back/top wall of x, y or z
1 .. 6 : Plots on Nth wall, numbered as in AXIS:
[xmin xmax ymin ymax zmin zmax]
 
SHADOWPLOT(HAX,PLANE) Adds a shadow plot on the Nth wall on axes HAX
HS = SHADOWPLOT(...) Returns a handle to the shadow (a patch)
 
Examples:
     figure
     surf(peaks)
     shading interp
     shadowplot x % Back X Wall
     shadowplot y % Back Y Wall

Acknowledgements

Octave inspired this file.

• MATLAB release: MATLAB 7.0.1 (R14SP1)

[Usman Ali]

hi, can we use shadow plot of plot3(), i am trying to do so but no successful. it only works with mesh/surf plots. help

[Pavel M.]

 

[Joseph Kirk]

line 79: if length(axis==4)

I don't think this achieves the intended purpose. (axis==4) will evaluate to a logical array of either 4 or 6 elements. length(axis==4) will thus equal 4 or 6, so the if-statement will always execute.

It should be: if length(ax)==4
This will execute the if-statement if the axis view is 2D, but not if the view is already 3D.

[Clayton]

Works well. Found a coding error: change line 120 to "surfdata{2} = repmat(surfdata{2}',1,Nx);"

[John D'Errico]

Its former self is only a "shadow" of what it is now. Sorry. I had to say it. 8-)

[John D'Errico]

I liked the idea until I tried it out. Shadowplot is of limited use in its current form. It works very nicely on the output of peaks, so then I tried it on one of my own 3d plots. It fails on more general patch objects, able to work on only objects of type 'surface'.