Adds uncertainty bounds to an existing plot.

Adds a polygon representing uncertainty bounds to an existing plot.

Usage

plotbandsonly(lband, uband, dates, date.fmt="%Y-%m-%d",
          bands.col="lightblue", border= NA, ...)

Arguments

lband

zoo or xts object with the values of the lower band.

uband

zoo or xts object with the values of the upper band.

dates

OPTIONAL. Date, factor, or character object indicating the dates that will be assigned to lband and uband.
If dates is a factor or character vector, its values are converted to dates using the date format specified by date.fmt.
When lband and uband are already of zoo class, the values provided by dates over-write the original dates of the objects.

date.fmt

OPTIONAL. Character indicating the format of dates. See format in as.Date.

bands.col

See polygon. Color to be used for filling the area between the lower and upper uncertainty bound.

border

See polygon. The color to draw the border. The default, 'NULL', means to use 'par("fg")'. Use 'border = NA' to omit borders.

...

further arguments passed to the polygon function for plotting the bands, or from other methods

Author

Mauricio Zambrano Bigiarini <mzb.devel@gmail.com>

Note

It requires the hydroTSM package

See also

pfactor, rfactor

Examples

# Loading daily streamflows of the Ega River (Spain), from 1961 to 1970
data(EgaEnEstellaQts)
obs <- EgaEnEstellaQts

# Selecting only the daily values belonging to the year 1961
obs <- window(obs, end=as.Date("1961-12-31"))

# Generating the lower and upper uncertainty bounds
lband <- obs - 5
uband <- obs + 5

if (FALSE) { # \dontrun{
plot(obs, type="n")
plotbandsonly(lband, uband)
points(obs, col="blue", cex=0.6, type="o")
} # }