sqr.plot: Plot of Spline Quantile Regression Coefficients

Description

This function plots one or all regression coefficients from quantile regression (QR) and spline quantile regression (SQR) on a given sequence of quantiles against the quantile level.

Usage

sqr.plot(
  summary.rq,
  summary.sqr = NULL,
  summary.sqrb = NULL,
  coef.sim = NULL,
  type = "l",
  lty = c(1, 2),
  lwd = c(1.5, 1),
  cex = 0.25,
  pch = 1,
  col = c(2, 1),
  idx = NULL,
  plot.rq = TRUE,
  plot.rq.line = FALSE,
  plot.zero = FALSE,
  plot.ls = TRUE,
  plot.ci = TRUE,
  var.names = NULL,
  Ylim = NULL,
  xlim = NULL,
  set.par = TRUE,
  mfrow = NULL,
  lab = c(10, 7, 7),
  mar = c(2, 3, 2, 1) + 0.1,
  las = 1
)

Value

Ylim (invisible)

Arguments

summary.rq: output of summary() for the QR fit from quantreg::rq()
summary.sqr: output of summary() for the primary SQR fit from sqr() (defalty = NULL)
summary.sqrb: output of summary() for the secondary SQR fit from sqr() (default = NULL)
coef.sim: output coefficients of boot.sqr() for the primary SQR (default = NULL)
type: as type parameter in plot() for plotting SQR (default = "l")
lty: line types for the primary and secondary SQR (default = c(1,2))
lwd: line widths for the primary and secondary SQR (default = c(1.5,1))
cex: as cex parameter in plot()
pch: as pch parameter in plot() for the QR (default = 1)
col: line colors for the primary and secondary SQR (default = c(2,1))
idx: index of individual coefficient to be plotted (default = NULL)
plot.rq: TRUE (default) or FALSE: if TRUE, plot QR as points
plot.rq.line: TRUE or FALSE (default): if TRUE, add line plot of QR
plot.zero: TRUE or FALSE (default): if TRUE, add zero line
plot.ls: TRUE (default) or FALSE: if TRUE, add least-square estimate with 90-percent CI
plot.ci: TRUE (default) or FALSE: if TRUE, add 90-percent bootstrap CI for the primary SQR when coef.sim is supplied or approximate CI when coef.sim = NULL
var.names: user-supplied names of regression coefficients (including the intercept)
Ylim: user-supplied matrix of ylim for each coefficient (default = NULL)
xlim: user-supplied xlim (default = NULL)
set.par: TRUE (default) or FALSE if TRUE, reset par()
mfrow: parameter for resetting par() (default = NULL)
lab: parameter for resetting par() (default = c(10,7,7))
mar: parameter for resetting par() (default = c(2,3,2,1)+0.1)
las: parameter for resetting par() (default = 1)