Produce a boxandwhisker plot(s) of the given (grouped) values.
1 2 3 4 5 6 7 8 9 10 11 12  gboxplot(x, ...)
## Default S3 method:
gboxplot(x, ..., range = 1.5, width = NULL,
varwidth = FALSE, notch = FALSE, outline = TRUE, names, plot = TRUE,
border = par("fg"), col = NULL, log = "", pars = list(boxwex = 0.8,
staplewex = 0.5, outwex = 0.5), horizontal = FALSE, add = FALSE,
at = NULL, grid = TRUE, col.grid = "grey90", col.acc = "white")
## S3 method for class 'formula'
gboxplot(formula, data = NULL, ..., subset,
na.action = NULL, grid = TRUE, col.grid = "grey90", col.acc = "white")

x 
for specifying data from which the boxplots are to be
produced. Either a numeric vector, or a single list containing such
vectors. Additional unnamed arguments specify further data
as separate vectors (each corresponding to a component boxplot).

... 
For the For the default method, unnamed arguments are additional data
vectors (unless 
range 
this determines how far the plot whiskers extend out
from the box. If 
width 
a vector giving the relative widths of the boxes making up the plot. 
varwidth 
if 
notch 
if 
outline 
if 
names 
group labels which will be printed under each boxplot. Can be a character vector or an expression (see plotmath). 
plot 
if 
border 
an optional vector of colors for the outlines of the
boxplots. The values in 
col 
if 
log 
character indicating if x or y or both coordinates should be plotted in log scale. 
pars 
a list of (potentially many) more graphical parameters,
e.g., 
horizontal 
logical indicating if the boxplots should be
horizontal; default 
add 
logical, if true add boxplot to current plot. 
at 
numeric vector giving the locations where the boxplots should
be drawn, particularly when 
grid 
logical; if 
col.grid 

col.acc 

formula 
a formula, such as 
data 
a data.frame (or list) from which the variables in

subset 
an optional vector specifying a subset of observations to be used for plotting. 
na.action 
a function which indicates what should happen
when the data contain 
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