| Library: | graphic |
| See also: | dispdot plotbox |
| Quantlet: | dispbox | |
| Description: | Generates a standard boxplot. An optional factor allows multiple boxplots by group. |
| Usage: | bp = dispbox(x {, factor}) | |
| Input: | ||
| x | n x 1 vector (continuous variable) | |
| factor | n x 1 vector (discrete variable) | |
| Output: | ||
| bp | composed graphical object | |
The whiskers designate the farest non-outliers above resp. below the box.
Outliers are all data at least 1.5 * (height of box) away from the upper resp. lower edge of the box. Outliers are plotted as circles.
If this distance exceeds 3 * (height of box), a star symbol is used ("gross outlier")
Requires the library "stats" to be present.;
IMPORTANT: The factor variable might be alphabetically reordered!
library("graphic")
library("stats")
x = normal(4000)
m = matrix(1000)
factor = m | 2*m | 3*m | 4*m
bp1 = dispbox(x)
bp2 = dispbox(x, factor)
dd = createdisplay(1, 2)
show(dd, 1, 1, bp1)
show(dd, 1, 2, bp2)
Shows a boxplot of x on the left. On the right four boxplots of the four groups within x defined by factor are shown.