NAME

s.surf.krig
Surface interpolation from site data via kriging

SYNOPSIS

s.surf.krig
s.surf.krig -help
s.surf.krig input=name outz=name outvarz=name model=name
[npoints=count] [range=semivariogram range] [power=exponetial power]
[nugget=semivariogram nugget] [sill=semivariogram sill] [max_lag=max_lag]

DESCRIPTION

Is missing.

Parameters:

input=name
Name of input site map
outz=name
Name of output z value raster map
outvarz=name
Name of output z variance raster map
outvarz=name
Name of output z variance raster map
model=type
Type of semivariogram model to be used
options: power,spherical,exp,log,gaussian
npoints=value
Number of interpolation points
default: 12
range=value
Not used with log or power models
default: 1.0
power=value
Only for use with the power model
default: 1.0
nugget=value
The variogram nugget variance
default: 0.0
sill=value
The variogram sill scaled to the sample variance
default: 1.0
max_lag=value
The max_lag is only used with the power model
default: 1000.0

NOTES

You have to play with the parameters to get a reasonable result and not a segmentation violation

The module finds semivariance from variogram model for the calculated distances: This function provides a "modelled" variogram based on the shape, range, sill and nugget determined from the examination of the experimental variogram. Semivariance values are calculated accordingly.

AUTHORS

Chris Skelly
School of Earth Sciences
Macquarie Univerity
North Ryde 2109 NSW Australia

chris@mqatmos.cic.mq.edu.au

Darrel McCauley?