On 29/08/2011 3:52 PM, Jie TANG wrote:
thank you , it works .

another problem is if can could define a variable to express the data.frame?
for example :
datanam<-c("newdata","newdata2")
plot(datanam[1][[newnam[1]]])

Use get():

plot(get(datanam[1])[[newnam[1]]]))

Duncan Murdoch


2011/8/30 Justin Haynes<jto...@gmail.com>

>  try:
>
>  newnam<-paste('newdatadat',dayno,sep='')
>
>  plot(test[[newnam[1]]])
>
>
>  On Mon, Aug 29, 2011 at 12:29 PM, Jie TANG<totang...@gmail.com>  wrote:
>
>>  hi, R-users
>>    I have a data.frame for example  test$newdataday24 and test$newdataday48
>>  I can plot them by
>>  plot(test$newdataday24)
>>  but now i want to plot different data by define a variable to describe
>>  them
>>  dayno<-c(24,48)
>>  newnam<-paste("test$newdataday",dayno,sep="")
>>  plot(newnam[1])
>>
>>  but i failed,the error message said that something wrong with plot.window
>>
>>  what can i do to fix my script ? thanks
>>  -
>>  TANG Jie
>>
>>         [[alternative HTML version deleted]]
>>
>>  ______________________________________________
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>>  https://stat.ethz.ch/mailman/listinfo/r-help
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>>  http://www.R-project.org/posting-guide.html
>>  and provide commented, minimal, self-contained, reproducible code.
>>
>
>



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