Explanation
For an explanation of the features themselves, see section 2.7.
Selecting Whether or Not to Use Interpolation
When there are less than 500 points of sampled data on the time axis, the displayed 
points (rasters) do not connect with each other. Numbers of sampled points below 
500 are said to be within the interpolation range. The interpolation feature interpolates 
between points that are in the interpolation range. You can select one of the following 
options:
•
 
: No interpolation is performed.
•  Outside of the interpolation range
     
 
•  Within the interpolation range
     
 
 
• 
: The space between two data points is filled with a straight line.
•  Outside of the interpolation range
  The spaces between vertically aligned dots are filled.
     
 
•  Within the interpolation range
     
 
7.8  Selecting a Graticule and Turning Interpolation, Scale Value Display, and Wave Labels On or Off