Seismic data horizon offshore of Nova Scotia.

Seismic data offsore of Nova Scotia in Canada. The data have some subtle structures that are interesting for comparing colormaps. Full details can be found at https://www.opendtect.org/osr/Main/PENOBSCOT3DSABLEISLAND License CC-BY.

data(penobscot)

Format

A matrix 463 x 595.

Source

https://github.com/agile-geoscience/notebooks/ https://github.com/agile-geoscience/notebooks/blob/master/Filtering_horizons.ipynb

Examples

#
library(pals)
data(penobscot)

# Hall used cubehelix palette
# http://wiki.seg.org/wiki/Smoothing_surfaces_and_attributes#External_links
image(penobscot, col=rev(cubehelix(99)))

# Niccoli suggested LinearL palette
# http://wiki.seg.org/wiki/How_to_evaluate_and_compare_color_maps
image(penobscot, col=linearl(99))

# Use this version to get a colorkey
# library(lattice)
# levelplot(penobscot, col.regions=rev(cubehelix(99)), 
#   cuts=97, asp=0.7, scale=list(draw=FALSE))