overPlotErrorPolygon {RCEIM} | R Documentation |
A simple function to overplot an error polygon around a curve. Note that the error is considered as symmetric, and exclusively on y. The polygon will be created from the coordinate tuples (x, (y - err_y)) and (x, (y + err_y)).
overPlotErrorPolygon(x, y, err_y, col = "grey", logPlot = FALSE, ...)
x |
A vector containing the x coordinate of the data. |
y |
A vector containing the y coordinate of the data. |
err_y |
A vector containing the error in y. |
col |
The color that will be used for filling the polygon. |
logPlot |
A boolean indicating if the plot is in logscale. |
... |
Further arguments to be passed to polygon(). |
A polygon is overplotted in the active graphics device.
Alberto Krone-Martins
# Shows a simple random curve and overplots a randomly created error bar. dev.new() xx <- 1:10 yy <- (1:10)/5 + 4 + (runif(10)-0.5)/0.5*2 plot(xx, yy, type="l", xlab="x", ylab="y", ylim=c(0,10)) err_yy <- 1.5 + (runif(10)-0.5)/0.5 overPlotErrorPolygon(xx,yy,err_yy, col=rgb(0,0,1,0.3), border=NA)