MAINT.Data (version 0.5.1)

IData: Interval Data objects

Description

‘IData’ creates IData objects from data frames of interval bounds or MidPoint/LogRange values of the interval-valued observations.

Usage

IData(Data, 
Seq = c("LbUb_VarbyVar", "MidPLogR_VarbyVar", "AllLb_AllUb",
"AllMidP_AllLogR"), VarNames=NULL, ObsNames=row.names(Data))

Arguments

Data

a data frame of interval bounds or MidPoint/LogRange values.

Seq

the format of ‘Data’ data frame. Available options are: “LbUb_VarbyVar”: lower bounds followed by upper bounds, variable by variable. “MidPLogR_VarbyVar”: MidPoints followed by LogRanges, variable by variable. “AllLb_AllUb”: all lower bounds followed by all upper bounds, in the same variable order. “AllMidP_AllLogR”: all MidPoints followed all LogRanges, in the same variable order.

VarNames

An optional vector of names to be assigned to the Interval-Valued Variables.

ObsNames

An optional vector of names assigned to the individual observations.

Details

Objects of type ‘IData’, describe a data set of ‘NObs’ observations on ‘NIVar’ Interval-Valued variables. This function creates an interval-data object from a data-frame with either the lower and upper bounds of the observed intervals or by their midpoints and log-ranges.

Examples

# Create an Interval-Data object containing the intervals for 899 observations 
# on the temperatures by quarter in 60 Chinese meteorological stations.

ChinaT <- IData(ChinaTemp[1:8],VarNames=c("T1","T2","T3","T4"))

cat("Summary of the ChinaT IData object:\n")  ; print(summary(ChinaT))
cat("ChinaT first ant last observations:\n")  
print(head(ChinaT,n=3))
cat("\n...\n")
print(tail(ChinaT,n=3))