linestack {vegan} | R Documentation |
Plots One-dimensional Diagrams without Overwriting Labels
Description
Function linestack
plots vertical one-dimensional plots for
numeric vectors. The plots are always labelled, but the labels
are moved vertically to avoid overwriting.
Usage
linestack(x, labels, cex = 0.8, side = "right", hoff = 2, air = 1.1,
at = 0, add = FALSE, axis = FALSE, ...)
Arguments
x |
Numeric vector to be plotted. |
labels |
Labels used instead of default (names of |
cex |
Size of the labels. |
side |
Put labels to the |
hoff |
Distance from the vertical axis to the label in units of the width of letter “m”. |
air |
Multiplier to string height to leave empty space between labels. |
at |
Position of plot in horizontal axis. |
add |
Add to an existing plot. |
axis |
Add axis to the plot. |
... |
Other graphical parameters to labels. |
Value
The function returns invisibly the shifted positions of labels in user coordinates.
Note
The function always draws labelled diagrams. If you want to have
unlabelled diagrams, you can use, e.g., plot
,
stripchart
or rug
.
Author(s)
Jari Oksanen with modifications by Gavin L. Simpson
Examples
## First DCA axis
data(dune)
ord <- decorana(dune)
linestack(scores(ord, choices=1, display="sp"))
linestack(scores(ord, choices=1, display="si"), side="left", add=TRUE)
title(main="DCA axis 1")
## Expressions as labels
N <- 10 # Number of sites
df <- data.frame(Ca = rlnorm(N, 2), NO3 = rlnorm(N, 4),
SO4 = rlnorm(N, 10), K = rlnorm(N, 3))
ord <- rda(df, scale = TRUE)
### vector of expressions for labels
labs <- expression(Ca^{2+phantom()},
NO[3]^{-phantom()},
SO[4]^{2-phantom()},
K^{+phantom()})
scl <- "sites"
linestack(scores(ord, choices = 1, display = "species", scaling = scl),
labels = labs, air = 2)
linestack(scores(ord, choices = 1, display = "site", scaling = scl),
side = "left", add = TRUE)
title(main = "PCA axis 1")