GRASS Tutorial for nviz

# NVIZ Reference Manual

CONTENTS
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## Mkdspf Panel - Range Threshold

On the Mkdspf Panel, you use the Range threshold option to create an evenly spaced set of display isosurfaces covering a user defined range of the Input File.

### OPTIONS

Min
  Enter the minimum or start value for the display isosurfaces.
Max
  Enter the maximum or stop value for the display isosurfaces.
Levels
  Enter the number of isosurfaces to create between the minimum and maximum.
Interpolation Type
  Linear
    Uses a linear interpolation to calculate the display isosurfaces levels.
  Logarithmic
    Uses a logarithmic interpolation to calculate the display isosurfaces levels.
  Quadratic
    Uses a quadratic interpolation to calculate the display isosurfaces levels.
  Arbitrary
    Uses an arbitrary interpolation based on the entered arbitrary value to calculate the display isosurfaces levels.