Plot Methods for Surveillance Time-Series Objects

This page gives an overview of plot types for objects of class "sts".

Usage

# S4 method for class 'sts,missing'
plot(x, type = observed ~ time | unit, ...)

Arguments

x

an object of class "sts".

type

see Details.

...

arguments passed to the type-specific plot function.

Details

There are various types of plots which can be produced from an "sts" object. The type argument specifies the desired plot as a formula, which defaults to observed ~ time | unit, i.e., plot the time series of each unit separately. The observed term on the left-hand side can also be omitted; it is used by default. Arguments to specific plot functions can be passed as further arguments (...). The following list describes the plot variants:

observed ~ time | unit

The default type shows ncol(x) plots, each containing the time series of one observational unit. The actual plotting per unit is done by the function stsplot_time1, called sequentially from stsplot_time.
A ggplot2-based alternative for this type of plot is provided through an autoplot-method for "sts" objects.

observed ~ time

The observations in x are first aggregated over units and the resulting univariate time-series is plotted via the function stsplot_time.

alarm ~ time

Generates a so called alarmplot for a multivariate sts object. For each time point and each series it is shown whether there is an alarm (so it actually shows alarm ~ time | unit and this type works as well). In case of hierarchical surveillance the user can pass an additional argument lvl, which is a vector of the same length as rows in x specifying for each time series its level.

observed ~ unit

produces a map of counts (or incidence) per region aggregated over time. See stsplot_space for optional arguments, details and examples.

Value

NULL (invisibly). The methods are called for their side-effects.

See also

the documentation of the individual plot types stsplot_time, stsplot_space, as well as the animate method.