plot3c

FUNCTION PLOT3C(X,Y,Z,V,'MARKER',Title') plots the values in vector v colour coded at the positions specified by the vectors x, y, and z in a 3-D axis system. A colourbar is added on the right side of the figure.

The colorbar strectches from the minimum value of v to its maximum in 9 steps (10 values).
The second last argument is optional to define the marker being used. The default is a point. To use a different marker (such as circles, ...) send its symbol to the function (which must be enclosed in '; see example).

This function is an extension of PLOTC.

Example:
The seismic P-velocity (v) depends on the three parameters porosity (por) and the bulk moduli of the saturating fluid (kf) and the elastic frame (kd). To plot the velocity data as a function of these three parameters use (assuming that all data are given in vectors):

plot3c(por,kd,kf,v,'d','Velocity')