earliestEnd {tframe} | R Documentation

## Start and End for Objects with Multiple Time Series

### Description

Return start or end date (or index of the object) from multiple time series objects.

### Usage

        earliestEnd(x, ...)
        earliestEndIndex(x, ...)
        ## Default S3 method:
        earliestEndIndex(x, ...)
        ## S3 method for class 'tframe':
        earliestEndIndex(x, ...)

        earliestStart(x, ...)
        earliestStartIndex(x, ...)
        ## Default S3 method:
        earliestStartIndex(x, ...)
        ## S3 method for class 'tframe':
        earliestStartIndex(x, ...)

        latestEnd(x, ...)
        latestEndIndex(x, ...)
        ## Default S3 method:
        latestEndIndex(x, ...)
        ## S3 method for class 'tframe':
        latestEndIndex(x, ...)

        latestStart(x, ...)
        latestStartIndex(x, ...)
        ## Default S3 method:
        latestStartIndex(x, ...)
        ## S3 method for class 'tframe':
        latestStartIndex(x, ...)

### Arguments

`x` | A tframe or tframed object.
`...` | Additional tframe or tframed objects.

### Details

These functions calculate the start and end of each object in the argument and return a result by comparing across objects. Thus, latestStart returns the start date of the object which starts latest and latestStartIndex returns the corresponding index of the object in the argument list.

### Value

A date or index.

### See Also

`tframe` `tfwindow` `tfTruncate` `trimNA`

### Examples

        t1<-ts(c(1,2,3,4,5), start=c(1991,1))
        t2<-ts(c(2,3,4,5,6,7,8), start=c(1992,1))
        t3<-ts(c(NA,2,3,4,5), start=c(1991,1))

        latestStart(t1,t2,t3)  # 1992 1 corresponding to the starting date of
                                # the object which starts latest (t2)
        latestStart(t1,t3)     # both start in 1991 1 (NAs count as data)
        latestStart(tbind(t1,t2,t3)) # tbind gives a single object starting in 1991 1
        latestStart(t2, tbind(t1,t2,t3))

        latestStartIndex(t1,t2,t3)  # position of t2 in the argument list

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