| alpha= |
Alpha transparency for overlapping elements expressed as a fraction between 0 (complete transparency) and 1 (complete opacity) |
alpha=0.5 |
|
| color= |
Associates the levels of variable with symbol color, shape, or size. For line plots, color associates levels of a variable with line color. For density and box plots, fill associates fill colors with a variable. Legends are drawn automatically. |
|
|
| data= |
Specifies a data frame |
|
|
| facets= |
|
|
|
| = |
|
rowvar ~ colvar |
Creates a trellis graph by specifying conditioning variables. |
| = |
|
rowvar~. |
create trellis graphs based on a single conditioning variable |
| = |
|
.~colvar |
create trellis graphs based on a single conditioning variable |
| = |
|
|
|
| fill= |
|
|
|
| formula= |
|
formula=y~x |
add simple linear regression lines |
| = |
|
formula=y~poly(x,2) |
produce a quadratic fit |
| = |
|
|
|
| = |
|
|
|
| geom= |
Specifies the geometric objects that define the graph type. The geom option is expressed as a character vector with one or more entries. |
|
|
| geom="point" |
|
|
|
| geom="smooth" |
|
|
|
| geom="boxplot" |
|
|
|
| geom="line" |
|
|
|
| geom="histogram" |
|
|
|
| geom="density" |
|
|
|
| geom="bar" |
|
|
|
| geom="jitter" |
|
|
|
| main= |
Character vectors specifying the title |
|
|
| method= |
If geom="smooth", a loess fit line and confidence limits are added by default. When the number of observations is greater than 1,000, a more efficient smoothing algorithm is employed. Methods include "lm" for regression, "gam" for generalized additive models, and "rlm" for robust regression. The formula parameter gives the form of the fit. |
|
|
| method="lm" |
|
|
add simple linear regression lines |
| method="rml" |
|
|
load the mgcv package |
| method="gam" |
|
|
load the MASS package |
|
|
|
|
|
|
|
|
| shape= |
|
|
|
| size= |
|
|
|
| sub= |
Character vectors specifying the subtitle |
|
|
| x= |
Specifies the variables placed on the horizontal axis. For univariate plots (for example, histograms), omit y |
|
|
| y= |
Specifies the variables placed on the vertical axis. For univariate plots (for example, histograms), omit y |
|
|
| xlab= |
Character vectors specifying horizontal axis labels |
|
|
| xlim= |
Two-element numeric vectors giving the minimum and maximum values for the horizontal axes, respectively |
|
|
| ylab= |
Character vectors specifying vertical axis labels |
|
|
| ylim= |
Two-element numeric vectors giving the minimum and maximum values for the vertical axes, respectively |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|