Error when replacing text in R

Question

I am replacing one text in R using sub.

 x<-"My name is ${name}"
 sub("${name}","Tiger",x)

Error message:

Error in sub("${name}", "Tiger", x) : 
  invalid regular expression '${name}', reason 'Invalid contents of {}'

The input text has {}, how to fix this error?

+3

regex replace r runtime-error

Manish Jan 25. At 4:11 am

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2 answers

$

, {

and }

must be escaped:

sub("\\$\\{name\\}","Tiger",x)
# [1] "My name is Tiger"

+7

flodel Jan 25. At 4:16 am

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sebastian-c · Accepted Answer · 2013-01-25T04:57:06+0000

Use an argument fixed=TRUE

:

sub("${name}","Tiger",x, fixed=TRUE)
# [1] "My name is Tiger"