R help - Sep 2012 - extracting values

Hi all,

I 'm doing the exercise given in the 'SDM with R' (Robert J. Hijmans
and Jane Elith), chapter 4.2, regarding extracting values . I tried to do the
same using my own data as well. Each cases i received the following error
message ;

"Error in .xyValues(x, as.matrix(y), ...) : xy should have 2 columns only.

Found these dimensions:

Can some body explain me how to get rid of that? Thanks in advance.

champika

	[[alternative HTML version deleted]]

Hi, 

Since most of us are unlikely to have a copy of the book available perhaps you
could supply the following informaion'
What packages are you using besides the basic R installation
What is the code
What is the data > The best way to supply sample data is to use the dput()
function to output a formatted data set that you can copy and paste into your
email.

John Kane
Kingston ON Canada

> -----Original Message-----
> From: kari0020 at uni.flinders.edu.au
> Sent: Tue, 18 Sep 2012 01:18:12 +0000
> To: r-help at r-project.org
> Subject: [R] extracting values
> 
> Hi all,
> 
> I 'm doing the exercise given in the 'SDM with R' (Robert J.
Hijmans and
> Jane Elith), chapter 4.2, regarding extracting values . I tried to do the
> same using my own data as well. Each cases i received the following error
> message ;
> 
> "Error in .xyValues(x, as.matrix(y), ...) : xy should have 2 columns
> only.
> 
> Found these dimensions:
> 
> Can some body explain me how to get rid of that? Thanks in advance.
> 
> champika
> 
> 	[[alternative HTML version deleted]]
> 
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