| stem.leaf {Rcmdr} | R Documentation |
Creates a classical ("Tukey-style") stem-and-leaf display.
stem.leaf(data, unit, m, Min, Max,
rule.line = c("Dixon", "Velleman", "Sturges"),
style = c("Tukey", "bare"), trim.outliers = TRUE, depths = TRUE,
reverse.negative.leaves = TRUE)
## S3 method for class 'stem.leaf':
print(x, ...)
data |
a numeric vector. |
unit |
leaf unit, as a power of 10 (e.g., 100, .01);
omit to let the function choose the unit. |
m |
number of parts (1, 2, or 5) into which each stem should be divided; omit to let the function choose the number of parts/stem. |
Min |
smallest non-outlying value; omit for automatic choice. |
Max |
largest non-outlying value; omit for automatic choice. |
rule.line |
the rule to use for choosing the desired number of lines
in the display; "Dixon" = 10*log10(n); "Velleman" = 2*sqrt(n);
"Sturges" = 1 + log2(n); the default is "Dixon". |
style |
"Tukey" (the default) for "Tukey-style" divided stems;
"bare" for divided stems that simply repeat the stem digits. |
trim.outliers |
if TRUE (the default), outliers are placed on LO and
HI stems. |
depths |
if TRUE (the default), print a column of "depths" to the left of the
stems; the depth of the stem containing the median is the stem-count enclosed in
parentheses. |
reverse.negative.leaves |
if TRUE (the default), reverse the leaves on negative
stems (so, e.g., the leaf 9 comes before the leaf 8, etc.). |
x |
an object of class stem.leaf to be printed. |
... |
not used: for compatibility with the generic print function. |
Unlike the stem function in the base package, this function produces
classic stem-and-leaf displays, as described in Tukey's Exploratory Data Analysis.
Outliers are determined using the rule for boxplots (see boxplot.stats).
Returns on object of class stem.leaf, which normally would be printed.
Peter Wolf, slightly modified by John Fox jfox@mcmaster.ca with the original author's permission.
Tukey, J. Exploratory Data Analysis. Addison-Wesley, 1977.
data(Prestige) stem.leaf(Prestige$income)