R help - Jan 2012 - about colnames

Hi,

when I run the below code,there is an error occured. could you please tell
me how to treat it?
> pdf('covariate.pdf')
> par(mfrow=c(1,1))
>
pairs(data2[,c("ID","TYPE","AGE","GNDR","HT")],
+          panel=function(x,y) { points(x,y); lines(lowess(x,y))})
Error in `[.data.frame`(data2, , c("ID", "TYPE",
"AGE", "GNDR", "HT")) :
  undefined columns selected
> dev.off()
RStudioGD
        2

 when I try colnames(data2) or names(data2) ,it shows as
follows:
> colnames(data2)
 [1] "X"     "X1"    "X0"    "."    
"..1"
 I think this may be the problem. Could you please tell me how to treat it?

Thank you!

Cassie

	[[alternative HTML version deleted]]

The problem occurred when you imported your data, but you haven't shown
those steps.
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xiaocong zuo <xiaocong.zuo at gmail.com> wrote:
>Hi,
>
>when I run the below code,there is an error occured. could you please
>tell
>me how to treat it?
>> pdf('covariate.pdf')
>> par(mfrow=c(1,1))
>>
pairs(data2[,c("ID","TYPE","AGE","GNDR","HT")],
>+          panel=function(x,y) { points(x,y); lines(lowess(x,y))})
>Error in `[.data.frame`(data2, , c("ID", "TYPE",
"AGE", "GNDR", "HT"))
>:
>  undefined columns selected
>> dev.off()
>RStudioGD
>        2
>
> when I try colnames(data2) or names(data2) ,it shows as follows:
>> colnames(data2)
> [1] "X"     "X1"    "X0"    "."    
"..1"
>I think this may be the problem. Could you please tell me how to treat
>it?
>
>Thank you!
>
>Cassie
>
>	[[alternative HTML version deleted]]
>
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