R help - Mar 2013 - Error message in vars package

Hi

I'm getting an error message with the roots() function in the vars package.
Even the example in the help file comes up with an error:
> data(Canada)
> var.2c <- VAR(Canada, p = 2, type = "const")
> roots(var.2c)
Error in UseMethod("roots") : 
  no applicable method for 'roots' applied to an object of class
"varest"

The error is odd, for the help file explains that one of the arguments of the
roots() function is an object of class "varest" generated by VAR()
-exactly the class of object that var.2c is:
> class(var.2c)
[1] "varest"


May it be that I'm using the latest version of R -in Windows- (ie 2.15.3 ),
perhaps?

Jose

Wrap Up and Run 10k is back! 

Also, new for 2013 ? 2km intergenerational walks at selected venues. So recruit
a buddy, dust off the trainers and beat the winter blues by
signing up now:

http://www.ageuk.org.uk/10k

                 Milton Keynes | Oxford | Sheffield | Crystal Palace | Exeter |
Harewood House, Leeds |
                                 Tatton Park, Cheshire | Southampton | Coventry



Age UK Improving later life

http://www.ageuk.org.uk


 

-------------------------------
Age UK is a registered charity and company limited by guarantee, (registered
charity number 1128267, registered company number 6825798).
Registered office: Tavis House, 1-6 Tavistock Square, London WC1H 9NA.

For the purposes of promoting Age UK Insurance, Age UK is an Appointed
Representative of Age UK Enterprises Limited, Age UK is an Introducer
Appointed Representative of JLT Benefit Solutions Limited and Simplyhealth
Access for the purposes of introducing potential annuity and health
cash plans customers respectively.  Age UK Enterprises Limited, JLT Benefit
Solutions Limited and Simplyhealth Access are all authorised and
regulated by the Financial Services Authority. 
------------------------------

This email and any files transmitted with it are confidential and intended
solely for the use of the individual or entity to whom they are
addressed. If you receive a message in error, please advise the sender and
delete immediately.

Except where this email is sent in the usual course of our business, any
opinions expressed in this email are those of the author and do not
necessarily reflect the opinions of Age UK or its subsidiaries and associated
companies. Age UK monitors all e-mail transmissions passing
through its network and may block or modify mails which are deemed to be
unsuitable.

Age Concern England (charity number 261794) and Help the Aged (charity number
272786) and their trading and other associated companies merged
on 1st April 2009.  Together they have formed the Age UK Group, dedicated to
improving the lives of people in later life.  The three national
Age Concerns in Scotland, Northern Ireland and Wales have also merged with Help
the Aged in these nations to form three registered charities:
Age Scotland, Age NI, Age Cymru.

On 2013-03-14 11:10, Jose Iparraguirre wrote:
> Hi
>
> I'm getting an error message with the roots() function in the vars
package.
> Even the example in the help file comes up with an error:
>
>> data(Canada)
>> var.2c <- VAR(Canada, p = 2, type = "const")
>> roots(var.2c)
> Error in UseMethod("roots") :
>    no applicable method for 'roots' applied to an object of class
"varest"
>
> The error is odd, for the help file explains that one of the arguments of
the roots() function is an object of class "varest" generated by VAR()
-exactly the class of object that var.2c is:
>
>> class(var.2c)
> [1] "varest"
>
>
> May it be that I'm using the latest version of R -in Windows- (ie
2.15.3 ), perhaps?
>
> Jose
>
> Wrap Up and Run 10k is back!
>
> Also, new for 2013 ? 2km intergenerational walks at selected venues. So
recruit a buddy, dust off the trainers and beat the winter blues by
> signing up now:
>
> http://www.ageuk.org.uk/10k
>
>                   Milton Keynes | Oxford | Sheffield | Crystal Palace |
Exeter | Harewood House, Leeds |
>                                   Tatton Park, Cheshire | Southampton |
Coventry
>
>
>
> Age UK Improving later life
>
> http://www.ageuk.org.uk
>
You really need to provide the information requested in Posting Guide.

The example works just fine for me.

My sessionInfo():
R version 2.15.3 Patched (2013-03-01 r62110)
Platform: x86_64-w64-mingw32/x64 (64-bit)

locale:
[1] LC_COLLATE=English_Canada.1252  LC_CTYPE=English_Canada.1252
[3] LC_MONETARY=English_Canada.1252 LC_NUMERIC=C
[5] LC_TIME=English_Canada.1252

attached base packages:
[1] stats     graphics  grDevices utils     datasets  methods   base

other attached packages:
[1] vars_1.5-0        lmtest_0.9-30     urca_1.2-7        strucchange_1.4-7
[5] sandwich_2.2-9    zoo_1.7-9         MASS_7.3-23

loaded via a namespace (and not attached):
[1] grid_2.15.3     lattice_0.20-13 tools_2.15.3

Peter Ehlers