xyz.coords  R Documentation 
Utility for obtaining consistent x, y and z coordinates and labels for three dimensional (3D) plots.
xyz.coords(x, y = NULL, z = NULL, xlab = NULL, ylab = NULL, zlab = NULL, log = NULL, recycle = FALSE, setLab = TRUE)
x, y, z 
the x, y and z coordinates of a set of points.
Both If the argument is a formula Alternatively two arguments 
xlab, ylab, zlab 
names for the x, y and z variables to be extracted. 
log 
character, 
recycle 
logical; if 
setLab 
logical indicating if the resulting 
A list with the components
x 
numeric (i.e., 
y 
numeric vector of the same length as 
z 
numeric vector of the same length as 
xlab 

ylab 

zlab 

Uwe Ligges and Martin Maechler
xy.coords
for 2D.
xyz.coords(data.frame(10*1:9, 4), y = NULL, z = NULL) xyz.coords(1:5, stats::fft(1:5), z = NULL, xlab = "X", ylab = "Y") y < 2 * (x2 < 10 + (x1 < 1:10)) xyz.coords(y ~ x1 + x2, y = NULL, z = NULL) xyz.coords(data.frame(x = 1:9, y = 2:12, z = 3:13), y = NULL, z = NULL, log = "xy") ##> Warning message: 2 x values <= 0 omitted ...
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