| plot descript {ltm} | R Documentation |
The plot method for descript objects currently works for dichotomous response patterns, and produces the
xy-plot of the total score versus the proportion of correct responses for each item.
## S3 method for class 'descript': plot(x, items = NULL, includeFirstLast = FALSE, xlab, ylab, ...)
x |
an object inheriting from class descript. |
items |
a numeric vector indicating which items to plot. |
includeFirstLast |
logical; if TRUE the first and last total scores categories are included. |
xlab, ylab |
character string or an expression; see title. |
... |
extra graphical parameters to be passed to matplot(). |
Dimitris Rizopoulos dimitris.rizopoulos@med.kuleuven.be
## Descriptives for WIRS data:
dsc <- descript(WIRS)
dsc
plot(dsc, includeFirstLast = TRUE, type = "b", lty = 1, pch = 1:6)
legend("topleft", names(WIRS), pch = 1:6, col = 1:6, lty = 1, bty = "n")