Add Contract Expiration Bars to Chart
Apply options or futures expiration vertical bars to current chart.
addExpiry(type = "options", lty = "dotted")
type |
options or futures expiration |
lty |
type of lines to draw |
See options.expiry and futures.expiry in quantmod for details and limitations.
Expiration lines will be drawn at appropriate dates. A chibTA object will be returned silently.
Jeffrey A. Ryan
## Not run: addExpiry() ## End(Not run)
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