tsNumToIndex: Converts a numeric series to an index using the first...
In fcbarbi/macroR: Functions for Macroeconomic time series analysis in R

Description Usage Arguments Details Value See Also Examples

Converts a numeric series to an index using the first observation as reference.

1	tsNumToIndex(x, base = 100, reference = 1)

`x`	Time-indexed data to convert, must be a ts or zoo object.
`base`	(Optional) Default is 100.
`reference`	(Optional) Observation to be used as proportions are calculated.

If using a monetary series be sure to deflate it before indexing.

Time series (ts or zoo) with the index.

tsVarToIndex

# Production averages 1254 units per month  
production <- ts( rnorm(30*12,mean=1254,sd=425),start=c(1980,1),freq=12)
ip  <- tsNumToIndex( production ) # industrial production index 
ip2 <- tsNumToIndex( production, reference = c(1992,6) ) # rebase for June 1992