create.disProg {surveillance}R Documentation

Creating an object of class disProg

Description

Creates an object of class disProg from a vector with the weeknumber (week) and matrices with the observed number of counts (observed) and the respective state chains (state), where each column represents an individual time series. The matrices neighbourhood and populationFrac provide information about neighbouring units and population proportions.

Usage

  create.disProg(week, observed, state, neighbourhood=NULL, 
       populationFrac=NULL)

Arguments

week number of week
observed matrix with parallel time series of counts where rows are time points and columns are the individual time series for unit/area i, i=1,...,m
state matrix with corresponding states
neighbourhood neighbourhood matrix N of dimension m times m with elements n_{ij}=1 if units i and j are adjacent and 0 otherwise
populationFrac matrix with corresponding population proportions

Details

Value

disProg object of class disProg

Author(s)

M. Paul

See Also

Examples


    # create an univariate disProg object for the salmonella.agona data
    data(salmonella.agona)
    week <- nrow(salmonella.agona)
    salmonellaDisProg <- create.disProg(week=week, observed=salmonella.agona$observed,
                                 state=salmonella.agona$state)
                                 
    # plot salmonella cases
    title <- "Salmonella Agona cases in the UK"
    plot(salmonellaDisProg, title = title, xaxis.years=TRUE, legend=FALSE,
            startyear = 1990, firstweek = 1)

[Package surveillance version 0.9-2 Index]