nutshell (version 1.02)

yosemite: Yosemite Valley Elevation Data

Description

This matrix contains information on the elevation at different points in Yosemite Valley. It is useful as an example for plotting 3 dimensional data.

Usage

data(yosemite)

format

The format is: num [1:562, 1:253] 2351 2345 2338 2331 2322 ...

source

This data was taken from the US Geological Survey's National Map Seamless Server: http://seamless.usgs.gov/website/seamless/viewer.htm.

Details

This data set is used as an example in the book "R in a Nutshell" from O'Reilly Media. You can find directions on how to create a similar data set for another location in the book.

Examples

data(yosemite)
yosemite.flipped <- yosemite[,seq(from=253,to=1)]
yosemite.rightmost <- yosemite[nrow(yosemite) - ncol(yosemite) + 1,]
halfdome <- yosemite[(nrow(yosemite) - ncol(yosemite) + 1):562,
                     seq(from=253,to=1)]
persp(halfdome, col=grey(.25), border=NA, expand=.15,
      theta=225, phi=20, ltheta=45, lphi=20, shade=.75)