Displays calibration curves of marginal Go and NoGo probabilities against
the threshold grid \(\gamma\) for results returned by
getgamma1cont.
Usage
# S3 method for class 'getgamma1cont'
plot(
x,
title = NULL,
col_go = "#658D1B",
col_nogo = "#D91E49",
base_size = 28,
...
)Arguments
- x
An object of class
getgamma1cont.- title
A character string for the plot title. Defaults to
NULL(no title displayed).- col_go
A character string specifying the colour for the Go curve. Default is
"#658D1B".- col_nogo
A character string specifying the colour for the NoGo curve. Default is
"#D91E49".- base_size
A positive numeric scalar specifying the base font size (in points) passed to
theme_bw(). Default is28.- ...
Further arguments passed to or from other methods (ignored).
Details
The x-axis represents candidate threshold values \(\gamma \in (0, 1)\). The y-axis represents the marginal probability:
Go curve: \(\Pr(g_{\mathrm{Go}} \ge \gamma)\) evaluated under the Go-calibration scenario (typically the Null scenario).
NoGo curve: \(\Pr(g_{\mathrm{NoGo}} \ge \gamma)\) evaluated under the NoGo-calibration scenario (typically the Alternative scenario).
Horizontal reference lines are drawn at target_go and
target_nogo. Filled circles (geom_point) mark the optimal
thresholds \((\gamma_{\mathrm{go}},\, \Pr(\mathrm{Go})_{\mathrm{opt}})\)
and \((\gamma_{\mathrm{nogo}},\, \Pr(\mathrm{NoGo})_{\mathrm{opt}})\),
with their values shown in the legend.
If either optimal threshold is NA, the corresponding point is omitted.