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Surf3D

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Surf3D

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20 Jun 2010 (Updated )

Plots upper and lower surfaces of a layer, calculates and plots the boundary faces

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Description

Intended for 3D geological/geophysical visualisation of layered data and will eventually form part of a geophysical visualisation package.
Run ThreedDemo to get an idea of how to use.

 INPUTS: LayerN: The number of the layer to be plotted
         R: a m*n*k matrix of colour/resistivity data for each layer where
            m*n is the size
            of the grid and k is the layer number
         Z: a m*n*k+1 matrix of elevation data for each layer. Therefore
            Z(:,:,1) gives the topography of the land, Z(:,:,2) would be the
            topography of the interface between layer 1 and layer 2.
            Z(:,:,k+1) gives the topography of the base of the last layer.
         Xn, Yn: m*n matrices of the base grid containing the XY co-ords
         for each point.
 
                NOTE: Each matrix must be surrounded by NaNs. This could be
                achieved in two ways: 1. Use the NaNMat function
                    2. Plot a pcolor image of the surface
                    and use ginput to draw a polygon of
                    the desired surface. Then use
                    'inpolygon' to replace all those
                    values lying outside with NaN. See
                    the file ThreedDemo for help.
 
 OUTPUTS: hLight: handle of the light object for manipulating lighting.

Has been tested on large data sets (10000 points). Uses opengl for rendering, but this can easily be changed.

MATLAB release MATLAB 7.9 (R2009b)
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Updates
21 Jun 2010

 21/06/10 Fixed bug in NanMat.m

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