[R-sig-Geo] error "not a numeric vector" when use function "localG"

[Marcelino de la Cruz]

Dear Cristina,

It sounds like a problem with the decimal 
separator in your raw data. If it is a comma, 
that can explain your problem. When reading the data in R indicate sep=","

HTH

Marcelino


At 18:29 12/03/2009, Huang Juying wrote:
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>Dear list members,
>
>I am a new R user and spdep user. I tried to use 
>function "localG" to calculate Getis Gi. My 
>targeted variable is log(SalePrice) for over 
>1000 houses. The listw is the number of neighbors within 3000m.
>
> > SalePrice.Gi <- localG(SalePrice, nb3000m.W, zero.policy=TRUE)
>
>Then I got this error:  SalePrice is not a numeric vector
>
>I don't understand why. All SalePrice data is 
>numeric, with 6 decimal precision. I tried to 
>import SalePrice from .dat or .txt or .csv file, 
>but got the same error. I tried to play with the 
>header and column/row argument, still no use.
>
>I am really frustrated. I guess there is a 
>simple solution, but I just cannot find it!!! 
>Please help me! Thank you in advance!
>
>Christina
>USC Geography department
>
>
>
>
>
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>
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________________________________

Marcelino de la Cruz Rot

Departamento de  Biología Vegetal
E.U.T.I. Agrícola
Universidad Politécnica de Madrid
28040-Madrid
Tel.: 91 336 54 35
Fax: 91 336 56 56
marcelino.delacruz at upm.es