[R] strsplit with invalid regular expression

[arun]

HI,

cond<-"andsin(log_angle_1_4)"
 diff_operator<-"sin\\("
 strsplit(cond,diff_operator)
#[[1]]
#[1] "and"            "log_angle_1_4)"


A.K.



----- Original Message -----
From: Bharat Warule <bwarule at gmail.com>
To: r-help at r-project.org
Cc: 
Sent: Thursday, November 8, 2012 6:39 AM
Subject: [R] strsplit with   invalid regular expression

Hi all,

> diff_operator <- "\\("
> strsplit(cond, diff_operator)
[[1]]
[1] "andsin"         "log_angle_1_4)"

> diff_operator <- "\\sin("
> strsplit(cond, diff_operator)
Error in strsplit(cond, diff_operator) : 
  invalid regular expression '\sin(', reason 'Missing ')''

When I am going to split with "(" it’s working fine but when i want use
"sin(" this is not working.
I understand that, I am missing something can anybody please point me.
Thanks for your help.

Thanks,
Bharat



-----
Bharat Warule 
Pune
--
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