Start and End for Objects with Multiple Time Series
Return start or end date (or index of the object) from multiple time series objects.
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, ...)x |
A tframe or tframed object. |
... |
Additional tframe or tframed objects. |
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.
A date or index.
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 listPlease choose more modern alternatives, such as Google Chrome or Mozilla Firefox.