network.design {SpherWave}R Documentation

Network Design

Description

produces multi-resolution network.

Usage

network.design(latlon, method = "Oh", type = "reduce", nlevel, x) 

Arguments

latlon grid points of observation sites in degree
method network design method, "cover", "ModifyGottlemann", "Gottlemann" or "Oh"
type specifies grid type, "regular" or "reduced"
nlevel the number of observations in each resolution when using the method `"cover"'
x radius in degree

Details

This function partitions the grid points of observations into networks. Each network corresponds resolution level and level 1 is the most detailed level. Possible methods are

`"cover"' for utilizing `"cover.design"' in the package `"field"'

`"ModifyGottlemann"' for modified G"{o}ttlemann's method

`"Gottlemann"' for G"{o}ttlemann's method

`"Oh"' for Oh's method.

For `"ModifyGottlemann"', `"Gottlemann"' and `"Oh"', two types of design, `"regular"' and `"reduced"' are provided.

Value

netlab vector of network labels indicating level of multi-resolution.

References

Oh, H-S. (1999) Spherical wavelets and their statistical analysis with applications to meteorological data. Ph.D. Thesis, Department of Statistics, Texas A&M University, College Station.

Examples

### Observations of year 1967
#data(temperature)
#names(temperature)

# Locations of 939 weather stations    
#latlon <- temperature$latlon[temperature$year == 1967, ]

#netlab <- network.design(latlon=latlon, method="cover",
#    nlevel=c(507, 244, 117, 49, 22))
#netlab <- network.design(latlon=latlon, method="ModifyGottlemann", 
#    type="regular", x=3)
#netlab <- network.design(latlon=latlon, method="Gottlemann", 
#    type="regular", x=2)
#netlab <- network.design(latlon=latlon, method="Oh", 
#    type="reduce", x=5)

[Package SpherWave version 1.1.0 Index]