Pitney Bowes MapInfo Vertical Mapper User Manual
Page 52
Using the Kriging Interpolation Technique
50
Vertical Mapper 3.7
The Extents button displays a summary of the geographic size and the z-value range of the original
point database, the density of the points, and the data value units.
Exploring the Kriging: Set Model Parameters Dialog Box
When you click the Set button in the Kriging Interpolation dialog box, the Set Model Parameters
dialog box opens. This dialog box provides additional settings for each kriging method.
The following options are available in the Method section:
•
Ordinary Kriging enables you to generate an interpolated surface with the default settings.
•
Simple Kriging enables you to specify the mean value used in the interpolation calculation.
•
Universal Kriging enables you to modify the polynomial expression used to approximate the
drift in the data. A detailed explanation of the concept of a regionalized variable and drift versus
residual values is beyond the scope of this manual. For more information, refer to the suggested
readings under
Suggested Reading on Interpolation Techniques on page 52
.
The following option is available in the Block Kriging section:
•
The Use Block Kriging check box enables you to specify the x-block and y-block settings that
define the level of discretization for the area around every point. Clear the check box to apply
punctual kriging.