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2018 Feb 13
0
Help with regular expressions
Hi Dennis,
How about:
# define the two values to search for
x<-2
y<-3
# create your search string and replacement string
repstring<-paste(x,y,sep=",")
newstring<-paste(x,y,sep=".")
# this is the string that you want to change
thetastring<-"SIGMA(2,3)"
sub(repstring,newstring,thetastring)
[1] "SIGMA(2.3)"
Use gsub if you want to change multiple values
Jim
On Tue, Feb 13, 2018 at 1:22 PM, Dennis Fisher <fisher at plessthan.com> wrote:
> R 3.4.2
> OS X
>
> Colleagues
>
> I would apprec...
2018 Feb 13
1
Help with regular expressions
...How about:
>
>
> # define the two values to search for
> x<-2
> y<-3
> # create your search string and replacement string
> repstring<-paste(x,y,sep=",")
> newstring<-paste(x,y,sep=".")
> # this is the string that you want to change
> thetastring<-"SIGMA(2,3)"
> sub(repstring,newstring,thetastring)
> [1] "SIGMA(2.3)"
>
> Use gsub if you want to change multiple values
>
> Jim
>
> On Tue, Feb 13, 2018 at 1:22 PM, Dennis Fisher <fisher at plessthan.com> wrote:
>> R 3.4.2
>> OS...
2018 Feb 13
3
Help with regular expressions
R 3.4.2
OS X
Colleagues
I would appreciate some help with regular expressions.
I have string that looks like:
" ITERATION ,THETA1 ,THETA2 ,THETA3 ,THETA4 ,THETA5 ,THETA6 ,THETA7 ,SIGMA(1,1) ,SIGMA(2,1) ,SIGMA(2,2)?
In the entries that