[R] What am I missing when using zoo on version 2.15?

[Eduardo M. A. M.Mendes]

Hello

 

I am running R versions 2.13 and 2.15.  One of my codes run ok on 2.13 but
on 2.15.   I have tried to understand what is wrong but come up with
nothing.

 

Here is the code

 

rm(list=ls())

graphics.off()

 

library(R.matlab)

library(zoo);

library(xts);

library(lattice);

library(hydroGOF);

 

a=readMat("exemplo_narmax_Aimores_MISO.mat")

 

predicoes=zoo(cbind(a$predicoes[,,1]$Real,a$predicoes[,,1]$Predito),as.Date(
a$predicoes[,,1]$data))

names(predicoes)=c("Real","Predito")

ggof(obs=predicoes$Real,sim=predicoes$Predito,main="Predicao Vazao - NARMAX
MISO",

     legend=c("Predito","Real"))

 

ggof is a function on the hydroGOF available on  CRAN.

 

Predicoes looks like

 

> predicoes

           Real   Predito

2008-12-20  921  921.0000

2008-12-21 1002 1002.0000

2008-12-22  870  870.0000

2008-12-23  695  695.0000

2008-12-24  751  751.0000

2008-12-25  650  650.0000

2008-12-26  443  443.0000

..

 

which looks ok to me.

 

The  error msg on version 2.15  is

 

> ggof(obs=predicoes$Real,sim=predicoes$Predito,main="Predicao Vazao -
NARMAX MISO",
+      legend=c("Predito","Real"))
Error in try.xts(x, error = "'x' needs to be timeBased or xtsible") : 
  'x' needs to be timeBased or xtsible

 

Just a remainder - there is no error whatsoever on version 2.13.

 

What am I missing?

 

Many thanks

 

Ed

 

 


        [[alternative HTML version deleted]]

______________________________________________
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.