R help - May 2007 - Errors with systemfit package and systemfitClassic()

I get the following error message after using the sysfit package's function
'systemfitClassic':

Error in data[[eqnVar]] : subscript out of bounds

When I do this:

MSYS1 <- cbind(Y, Num, F, PO, PD, GO, GD)
MigOLS1 <- systemfitClassic("OLS", F ~ PO + PD + GO + GD, eqnVar =
"Num", timeVar = "Y", data = MSYS1)
and I get this error message: 

Error in inherits(x, "factor") : attempt to select more than one
element

when I do this (removing quotes from columns set as 'eqnVar' and
'timeVar'):

MSYS1 <- cbind(Y, Num, F, PO, PD, GO, GD)
MigOLS1 <- systemfitClassic("OLS", F ~ PO + PD + GO + GD, eqnVar =
Num, timeVar = Y, data = MSYS1)

When I query 'typeof()' I get the following:

Y: Integer
Num: Integer
F: Integer
PO: Integer
PD: Integer
GO: Double
GD: Double

I have set my data up in a manner analogous to that in the examples in the
systemfit documentation.  Also, the panel is balanced.  If it matters, here are
some descriptions of the data:

Y: Year
Num: ID of Flow
F: Flow
PO: Origin Population
PD: Destination Population
GO: Origin GDP
GD: Destination GDP
	[[alternative HTML version deleted]]

Hi iamisha1:

Sorry for answering so late!

On Wednesday 09 May 2007 23:47, iamisha1 at comcast.net
wrote:
> I get the following error message after using the sysfit package's
function
> 'systemfitClassic':
>
> Error in data[[eqnVar]] : subscript out of bounds
>
> When I do this:
>
> MSYS1 <- cbind(Y, Num, F, PO, PD, GO, GD)
> MigOLS1 <- systemfitClassic("OLS", F ~ PO + PD + GO + GD,
eqnVar = "Num",
> timeVar = "Y", data = MSYS1) and I get this error message:
Argument "data" must be a "data.frame" (please read the
documentation!).
Hence,
   systemfitClassic( [...], data = as.data.frame( MSYS1 ) ) 
or 
   MSYS1 <- as.data.frame( cbind(Y, Num, F, PO, PD, GO, GD) )
should work.

Arne
>
> Error in inherits(x, "factor") : attempt to select more than one
element
>
> when I do this (removing quotes from columns set as 'eqnVar' and
> 'timeVar'):
>
> MSYS1 <- cbind(Y, Num, F, PO, PD, GO, GD)
> MigOLS1 <- systemfitClassic("OLS", F ~ PO + PD + GO + GD,
eqnVar = Num,
> timeVar = Y, data = MSYS1)
>
> When I query 'typeof()' I get the following:
>
> Y: Integer
> Num: Integer
> F: Integer
> PO: Integer
> PD: Integer
> GO: Double
> GD: Double
>
> I have set my data up in a manner analogous to that in the examples in the
> systemfit documentation.  Also, the panel is balanced.  If it matters, here
> are some descriptions of the data:
>
> Y: Year
> Num: ID of Flow
> F: Flow
> PO: Origin Population
> PD: Destination Population
> GO: Origin GDP
> GD: Destination GDP
> 	[[alternative HTML version deleted]]
>
> ______________________________________________
> R-help at stat.math.ethz.ch 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.
-- 
Arne Henningsen
Department of Agricultural Economics
University of Kiel
Olshausenstr. 40
D-24098 Kiel (Germany)
Tel: +49-431-880 4445
Fax: +49-431-880 1397
ahenningsen at agric-econ.uni-kiel.de
http://www.uni-kiel.de/agrarpol/ahenningsen/