plot.Wimage.info {fields}R Documentation

plot to check 2-d multiresolution indexing.

Description

Plots in image format the differnt blocks of coefficents asscoatied with a 2-d multiresolution. This function can be used to check the Wtransfomr indexing functions and also as an introduction to how the coefficients are organized.

Usage

plot.Wimage.info(m, n, cut.min)

Arguments

m Number of rows in image
n Number of columns of image
cut.min Smallest number of smooth basis functions. Coarsest resolution will have atleast cut.min X cut.min basis functions with support on a regular grid.

Details

This function was used to check the (compicated) indexing functions work. But it also might a useful graphics to desribe how the different levels of wavelet coefficients are pack into the image format.

Author(s)

Doug Nychka

See Also

Wtransform.image, W.info, Wimage.info,

Examples

#
# 64X 128 image coarsest level has 8X16 smooth basis funcitons. 
#
# NOTE as a matrix the image plot is upside down! Rows are along X-axis and 
# columns on Y
# e.g. the (1,1) element is the lower left corner. 
#

plot.Wimage.info( 64, 128, cut.min=8)


[Package fields version 1.7.2 Index]