SpherWave (version 1.2.2)

network.design: 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

Value

netlab

vector of network labels indicating level of multi-resolution.

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\"ottlemann's method `"Gottlemann"' for G\"ottlemann's method `"Oh"' for Oh's method. For `"ModifyGottlemann"', `"Gottlemann"' and `"Oh"', two types of design, `"regular"' and `"reduced"' are provided.

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)