| Wimage.info.plot {fields} | R Documentation |
Plots in image format the differnt blocks of coefficents associated with a 2-d multiresolution. This function can be used to check the Wtransform indexing functions and is also an introduction to how the coefficients are organized.
Wimage.info.plot(m, n, cut.min)
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. |
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.
Doug Nychka
Wtransform.image,
W.info,
Wimage.info,
# # 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. # Wimage.info.plot( 64, 128, cut.min=8)