xts: addPolygon – R documentation

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addPolygon

Add a polygon to an existing xts plot

Description

Draw a polygon on an existing xts plot by specifying a time series of y coordinates. The xts index is used for the x coordinates and the first two columns are the upper and lower y coordinates, respectively.

Usage

addPolygon(x, y = NULL, main = "", on = NA, col = NULL, ...)

Arguments

`x`	an xts object to plot. Must contain 2 columns for the upper and lower y coordinates for the polygon. The first column is interpreted as the upper y coordinates and the second column as the lower y coordinates.
`y`	NULL, not used
`main`	main title for a new panel if drawn.
`on`	panel number to draw on. A new panel will be drawn if `on=NA`.
`col`	color palette to use, set by default to rational choices.
`...`	passthru parameters to `par`

Author(s)

Ross Bennett

References

Based on code by Dirk Eddelbuettel from http://dirk.eddelbuettel.com/blog/2011/01/16/

xts

eXtensible Time Series

v0.12.1

GPL (>= 2)

Authors

Jeffrey A. Ryan [aut, cph], Joshua M. Ulrich [cre, aut], Ross Bennett [ctb], Corwin Joy [ctb]

Initial release