plot_transition: Plot the transition function of the estimated PSTR model.

In PSTR: Panel Smooth Transition Regression Modelling

Description

This function plots the transition function of the estimated PSTR model.

Usage

plot_transition(obj, size = 1.5, color = "blue", xlim = NULL,
  ylim = NULL, fill = NULL, alpha = NULL)

Arguments

obj	an object of the class PSTR returned from some functions in the package. Note that the corresponding PSTR model must be estimated first.
size	the size of the circle.
color	the color of the circle.
xlim	a numeric vector of dimension 2 specifying the limits of x-axis.
ylim	a numeric vector of dimension 2 specifying the limits of y-axis.
fill	the color used to fill the area on the transition curve with observations, NULL for not fill, see ggplot2.
alpha	a number controlling the transparency of the points and filled area, NULL for default, see ggplot2.

Details

The funciton uses some functions in the ggplot2 package and aims to give a quick plot of the transtion function. The user can customize the title, subtitle, caption, x and y labels, for details, read the help file for the labs function in ggplot2.

Value

A ggplot object. The user can plot it simply by print the object.

Author(s)

Yukai Yang, [e-mail]

See Also

Functions which return an object of the class PSTR and can be input into this function

EstPSTR

Examples

pstr = NewPSTR(Hansen99, dep='inva', indep=4:20, indep_k=c('vala','debta','cfa','sales'),
    tvars=c('vala'), iT=14) # create a new PSTR object

# estimate the PSTR model
pstr = EstPSTR(use=pstr, im=1, iq=1, useDelta=TRUE, par=c(.63,0), method='CG')

# plot the transition function

ret = plot_transition(pstr)
# plot by running
ret

ret = plot_transition(pstr, fill='blue', xlim=c(-2,20), color = "dodgerblue4", size = 2, alpha=.3)
ret

PSTR documentation built on June 4, 2019, 1:03 a.m.