# volplot.m

Volumetric 3D plot function for scalar fields. Sign is mapped into colour and amplitude into opacity. Separate scaling for positive and negative values -- displaying the colour bar is recommended.

## Syntax

    volplot(data_cube,axis_ranges,clip_ranges)


## Arguments

   data_cube   - data cube with dimensions ordered
as [X Y Z]

axis_ranges - six-element vector giving axis extents
as [xmin xmax ymin ymax zmin zmax]

clip_ranges - (optional) the values, as a fraction
of the maximum in positive and nega-
tive directions, at which the values
should be clipped (this is useful for
steep functions).


## Outputs

    this function produces a figure