Plot method for np_quantile_causality objects
# S3 method for np_quantile_causality
plot(x, cv = 1.96, title = NULL, ...)A ggplot object (invisibly).
an object of class np_quantile_causality
numeric; a reference critical value line (default 1.96 for ~5%)
optional plot title; default is constructed from x$type
unused (for S3 compatibility)
Balcilar, M., Gupta, R., & Pierdzioch, C. (2016). Does uncertainty move the gold price? New evidence from a nonparametric causality-in-quantiles test. Resources Policy, 49, 74–80.
Balcilar, M., Gupta, R., Kyei, C., & Wohar, M. E. (2016). Does economic policy uncertainty predict exchange rate returns and volatility? Evidence from a nonparametric causality-in-quantiles test. Open Economies Review, 27(2), 229–250.