Dear list,

We have encountered problems with the package mvbutils while creating (or 
reading from disk) timeSeries objects. Below is a very simple example of the 
problem. We are using R 2.12 in  a PC running Windows 7  64-bit Professional.

-----------
library(timeSeries)
 
cv1 <- as.character(as.Date(1:10, origin = "1970-01-01"))
ts1 = timeSeries(1:10, cv1, units = NULL)
 
print(ts1)
 
library(mvbutils)
 
ts2 = timeSeries(1:10, cv1, units = NULL)
 
print(ts2)
print(ts1) # Both objects have problems
--------------
 
This is the error message generated when printing the timeSeries after loading 
mvbutils:
 
Error in validObject(.Object) :
  invalid class "timeDate" object: 1: invalid object for slot "Data"
in class "timeDate": got class "POSIXt", should be or extend class "POSIXct"
invalid class "timeDate" object: 2: invalid object for slot "Data" in class 
"timeDate": got class "POSIXct", should be or extend class "POSIXct"
 
 
The problem does not happen in other versions of R.
 Any help would be appreciated.
 
Thanks in advance,
 
Felipe Araujo
Researcher in finance and economics
Rio de Janeiro, Brasil



      
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