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RCulloch

2010-Aug-10 13:17 UTC

[R] grep problem decimal points looping

Hi R Users, 

I have been trying to work out how to rename column names using grep,
basically I have generated these column names using tapply:

  [1] "NAME"  "X1.1"  "X2.1"  "X3.1" 
"X4.1"  "X5.1"  "X6.1"  "X7.1" 
"X8.1"
 [10] "X1.2"  "X2.2"  "X3.2"  "X4.2" 
"X5.2"  "X6.2"  "X7.2"  "X8.2" 
"X1.3"
 [19] "X2.3"  "X3.3"  "X4.3"  "X5.3" 
"X6.3"  "X7.3"  "X8.3"  "X1.5" 
"X2.5"
 [28] "X3.5"  "X4.5"  "X5.5"  "X6.5" 
"X7.5"  "X8.5"  "X1.6"  "X2.6" 
"X3.6"
 [37] "X4.6"  "X5.6"  "X6.6"  "X7.6" 
"X8.6"  "X1.8"  "X2.8"  "X3.8" 
"X4.8"
 [46] "X5.8"  "X6.8"  "X7.8"  "X8.8" 
"X1.9"  "X2.9"  "X3.9"  "X4.9" 
"X5.9"
 [55] "X6.9"  "X7.9"  "X8.9"  "X1.10"
"X2.10" "X3.10" "X4.10" "X5.10"
"X6.10"
 [64] "X7.10" "X8.10" "X1.12" "X2.12"
"X3.12" "X4.12" "X5.12" "X6.12"
"X7.12"
 [73] "X8.12" "X1.13" "X2.13" "X3.13"
"X4.13" "X5.13" "X6.13" "X7.13"
"X8.13"
 [82] "X1.14" "X2.14" "X3.14" "X4.14"
"X5.14" "X6.14" "X7.14" "X8.14"
"X1.15"
 [91] "X2.15" "X3.15" "X4.15" "X5.15"
"X6.15" "X7.15" "X8.15" "X1.16"
"X2.16"
[100] "X3.16" "X4.16" "X5.16" "X6.16"
"X7.16" "X8.16" "X1.17" "X2.17"
"X3.17"
[109] "X4.17" "X5.17" "X6.17" "X7.17"
"X8.17" "X1.18" "X2.18" "X3.18"
"X4.18"
[118] "X5.18" "X6.18" "X7.18" "X8.18"
"X1.19" "X2.19" "X3.19" "X4.19"
"X5.19"
[127] "X6.19" "X7.19" "X8.19" "X1.20"
"X2.20" "X3.20" "X4.20" "X5.20"
"X6.20"
[136] "X7.20" "X8.20" "X1.21" "X2.21"
"X3.21" "X4.21" "X5.21" "X6.21"
"X7.21"
[145] "X8.21" "X1.22" "X2.22" "X3.22"
"X4.22" "X5.22" "X6.22" "X7.22"
"X8.22"
[154] "X1.23" "X2.23" "X3.23" "X4.23"
"X5.23" "X6.23" "X7.23" "X8.23"
"X1.24"
[163] "X2.24" "X3.24" "X4.24" "X5.24"
"X6.24" "X7.24" "X8.24" "X1.25"
"X2.25"
[172] "X3.25" "X4.25" "X5.25" "X6.25"
"X7.25" "X8.25" "X1.26" "X2.26"
"X3.26"
[181] "X4.26" "X5.26" "X6.26" "X7.26"
"X8.26" "X1.27" "X2.27" "X3.27"
"X4.27"
[190] "X5.27" "X6.27" "X7.27" "X8.27"
"X1.28" "X2.28" "X3.28" "X4.28"
"X5.28"
[199] "X6.28" "X7.28" "X8.28" "X1.29"
"X2.29" "X3.29" "X4.29" "X5.29"
"X6.29"
[208] "X7.29" "X8.29" "X1.30" "X2.30"
"X3.30" "X4.30" "X5.30" "X6.30"
"X7.30"
[217] "X8.30" "X1.31" "X2.31" "X3.31"
"X4.31" "X5.31" "X6.31" "X7.31"
"X8.31"
[226] "X1.32" "X2.32" "X3.32" "X4.32"
"X5.32" "X6.32" "X7.32" "X8.32"
"X1.33"
[235] "X2.33" "X3.33" "X4.33" "X5.33"
"X6.33" "X7.33" "X8.33"

What the names mean are behaviour.day the X is not important to the data, it
is the numbers I am trying to select on. 

So I want to split the data by day i.e. selecting for the number after the
decimal. 

I am using this code (where scananal is the data) with out looping so the
number following the decimal I change manually (NB the data have been
changed to character):

DAY <- grep("(X[[:digit:]]+).3",colnames(scananal))

However, this will select for day 3, 30, 31, 32, etc I have tried to use
fixed = TRUE, but that just returns integer(0). But if I use 30, it will
select only 30. Not sure what I'm doing wrong here, and I assumed that fixed
= T would fix this, but doesn't. 

I have tried to loop this too, but with no luck, so if anyone can point me
in the right direction about how to loop using grep I would be most
grateful!

The main problem I have is where to put the loop, for example:

for(i in 1:33){
print(i)
DAY[[i]] <- grep("(X[[:digit:]]+).[[i]]",colnames(scananal))
}


which doesn't work, and no doubt there are obvious reasons for this! Any
help would be much appreciated,

All the best,

Ross






-- 
View this message in context:
http://r.789695.n4.nabble.com/grep-problem-decimal-points-looping-tp2319773p2319773.html
Sent from the R help mailing list archive at Nabble.com.

David Winsemius

2010-Aug-10 13:51 UTC

head link

[R] grep problem decimal points looping

On Aug 10, 2010, at 9:17 AM, RCulloch wrote:
>
> Hi R Users,
>
> I have been trying to work out how to rename column names using grep,
> basically I have generated these column names using tapply:
>
>  [1] "NAME"  "X1.1"  "X2.1"  "X3.1"
"X4.1"  "X5.1"  "X6.1"  "X7.1"
> "X8.1"
> [10] "X1.2"  "X2.2"  "X3.2"  "X4.2"
"X5.2"  "X6.2"  "X7.2"  "X8.2"
> "X1.3"
> [19] "X2.3"  "X3.3"  "X4.3"  "X5.3"
"X6.3"  "X7.3"  "X8.3"  "X1.5"
> "X2.5"
> [28] "X3.5"  "X4.5"  "X5.5"  "X6.5"
"X7.5"  "X8.5"  "X1.6"  "X2.6"
> "X3.6"
> [37] "X4.6"  "X5.6"  "X6.6"  "X7.6"
"X8.6"  "X1.8"  "X2.8"  "X3.8"
> "X4.8"
> [46] "X5.8"  "X6.8"  "X7.8"  "X8.8"
"X1.9"  "X2.9"  "X3.9"  "X4.9"
> "X5.9"
> [55] "X6.9"  "X7.9"  "X8.9" 
"X1.10" "X2.10" "X3.10" "X4.10"
"X5.10"
> "X6.10"
> [64] "X7.10" "X8.10" "X1.12"
"X2.12" "X3.12" "X4.12" "X5.12"
"X6.12"
> "X7.12"
> [73] "X8.12" "X1.13" "X2.13"
"X3.13" "X4.13" "X5.13" "X6.13"
"X7.13"
> "X8.13"
> [82] "X1.14" "X2.14" "X3.14"
"X4.14" "X5.14" "X6.14" "X7.14"
"X8.14"
> "X1.15"
> [91] "X2.15" "X3.15" "X4.15"
"X5.15" "X6.15" "X7.15" "X8.15"
"X1.16"
> "X2.16"
> [100] "X3.16" "X4.16" "X5.16"
"X6.16" "X7.16" "X8.16" "X1.17"
"X2.17"
> "X3.17"
> [109] "X4.17" "X5.17" "X6.17"
"X7.17" "X8.17" "X1.18" "X2.18"
"X3.18"
> "X4.18"
> [118] "X5.18" "X6.18" "X7.18"
"X8.18" "X1.19" "X2.19" "X3.19"
"X4.19"
> "X5.19"
> [127] "X6.19" "X7.19" "X8.19"
"X1.20" "X2.20" "X3.20" "X4.20"
"X5.20"
> "X6.20"
> [136] "X7.20" "X8.20" "X1.21"
"X2.21" "X3.21" "X4.21" "X5.21"
"X6.21"
> "X7.21"
> [145] "X8.21" "X1.22" "X2.22"
"X3.22" "X4.22" "X5.22" "X6.22"
"X7.22"
> "X8.22"
> [154] "X1.23" "X2.23" "X3.23"
"X4.23" "X5.23" "X6.23" "X7.23"
"X8.23"
> "X1.24"
> [163] "X2.24" "X3.24" "X4.24"
"X5.24" "X6.24" "X7.24" "X8.24"
"X1.25"
> "X2.25"
> [172] "X3.25" "X4.25" "X5.25"
"X6.25" "X7.25" "X8.25" "X1.26"
"X2.26"
> "X3.26"
> [181] "X4.26" "X5.26" "X6.26"
"X7.26" "X8.26" "X1.27" "X2.27"
"X3.27"
> "X4.27"
> [190] "X5.27" "X6.27" "X7.27"
"X8.27" "X1.28" "X2.28" "X3.28"
"X4.28"
> "X5.28"
> [199] "X6.28" "X7.28" "X8.28"
"X1.29" "X2.29" "X3.29" "X4.29"
"X5.29"
> "X6.29"
> [208] "X7.29" "X8.29" "X1.30"
"X2.30" "X3.30" "X4.30" "X5.30"
"X6.30"
> "X7.30"
> [217] "X8.30" "X1.31" "X2.31"
"X3.31" "X4.31" "X5.31" "X6.31"
"X7.31"
> "X8.31"
> [226] "X1.32" "X2.32" "X3.32"
"X4.32" "X5.32" "X6.32" "X7.32"
"X8.32"
> "X1.33"
> [235] "X2.33" "X3.33" "X4.33"
"X5.33" "X6.33" "X7.33" "X8.33"
>
> What the names mean are behaviour.day the X is not important to the  
> data, it
> is the numbers I am trying to select on.
>
> So I want to split the data by day i.e. selecting for the number  
> after the
> decimal.
>
> I am using this code (where scananal is the data) with out looping  
> so the
> number following the decimal I change manually (NB the data have been
> changed to character):
>
You need to learn the special character"$" which marks the no- 
character end of string. After creating a replica of your column-names  
with scan and grep:
inp <- scan(what="character")
inX <- inp[grep("X", inp)]

 > DAY <- grep("(X[[:digit:]]+).3$",inX)
 > inX[DAY]
[1] "X1.3" "X2.3" "X3.3" "X4.3"
"X5.3" "X6.3" "X7.3" "X8.3"
> DAY <- grep("(X[[:digit:]]+).3",colnames(scananal))
>
> However, this will select for day 3, 30, 31, 32, etc I have tried to  
> use
> fixed = TRUE, but that just returns integer(0). But if I use 30, it  
> will
> select only 30. Not sure what I'm doing wrong here, and I assumed  
> that fixed
> = T would fix this, but doesn't.
>
> I have tried to loop this too, but with no luck, so if anyone can  
> point me
> in the right direction about how to loop using grep I would be most
> grateful!
>
> The main problem I have is where to put the loop, for example:
>
> for(i in 1:33){
> print(i)
> DAY[[i]] <- grep("(X[[:digit:]]+).[[i]]",colnames(scananal))
> }
>
>
> which doesn't work, and no doubt there are obvious reasons for this!  
> Any
> help would be much appreciated,
>
> All the best,
>
> Ross
>
>
>
>
>
>
> -- 
> View this message in context:
http://r.789695.n4.nabble.com/grep-problem-decimal-points-looping-tp2319773p2319773.html
> Sent from the R help mailing list archive at Nabble.com.
>
> ______________________________________________
> R-help at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide
http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
David Winsemius, MD
West Hartford, CT

David Winsemius

2010-Aug-10 14:12 UTC

head link

[R] grep problem decimal points looping

On Aug 10, 2010, at 9:51 AM, David Winsemius wrote:
>
> On Aug 10, 2010, at 9:17 AM, RCulloch wrote:
>
>>
>> Hi R Users,
>>
>> I have been trying to work out how to rename column names using grep,
>> basically I have generated these column names using tapply:
>>
>> [1] "NAME"  "X1.1"  "X2.1" 
"X3.1"  "X4.1"  "X5.1"  "X6.1" 
"X7.1"
>> "X8.1"
>> [10] "X1.2"  "X2.2"  "X3.2" 
"X4.2"  "X5.2"  "X6.2"  "X7.2"
>> "X8.2"  "X1.3"
>> [19] "X2.3"  "X3.3"  "X4.3" 
"X5.3"  "X6.3"  "X7.3"  "X8.3"
>> "X1.5"  "X2.5"
>> [28] "X3.5"  "X4.5"  "X5.5" 
"X6.5"  "X7.5"  "X8.5"  "X1.6"
>> "X2.6"  "X3.6"
>> [37] "X4.6"  "X5.6"  "X6.6" 
"X7.6"  "X8.6"  "X1.8"  "X2.8"
>> "X3.8"  "X4.8"
>> [46] "X5.8"  "X6.8"  "X7.8" 
"X8.8"  "X1.9"  "X2.9"  "X3.9"
>> "X4.9"  "X5.9"
>> [55] "X6.9"  "X7.9"  "X8.9" 
"X1.10" "X2.10" "X3.10" "X4.10"
"X5.10"
>> "X6.10"
>> [64] "X7.10" "X8.10" "X1.12"
"X2.12" "X3.12" "X4.12" "X5.12"
"X6.12"
>> "X7.12"
>> [73] "X8.12" "X1.13" "X2.13"
"X3.13" "X4.13" "X5.13" "X6.13"
"X7.13"
>> "X8.13"
>> [82] "X1.14" "X2.14" "X3.14"
"X4.14" "X5.14" "X6.14" "X7.14"
"X8.14"
>> "X1.15"
>> [91] "X2.15" "X3.15" "X4.15"
"X5.15" "X6.15" "X7.15" "X8.15"
"X1.16"
>> "X2.16"
>> [100] "X3.16" "X4.16" "X5.16"
"X6.16" "X7.16" "X8.16" "X1.17"
"X2.17"
>> "X3.17"
>> [109] "X4.17" "X5.17" "X6.17"
"X7.17" "X8.17" "X1.18" "X2.18"
"X3.18"
>> "X4.18"
>> [118] "X5.18" "X6.18" "X7.18"
"X8.18" "X1.19" "X2.19" "X3.19"
"X4.19"
>> "X5.19"
>> [127] "X6.19" "X7.19" "X8.19"
"X1.20" "X2.20" "X3.20" "X4.20"
"X5.20"
>> "X6.20"
>> [136] "X7.20" "X8.20" "X1.21"
"X2.21" "X3.21" "X4.21" "X5.21"
"X6.21"
>> "X7.21"
>> [145] "X8.21" "X1.22" "X2.22"
"X3.22" "X4.22" "X5.22" "X6.22"
"X7.22"
>> "X8.22"
>> [154] "X1.23" "X2.23" "X3.23"
"X4.23" "X5.23" "X6.23" "X7.23"
"X8.23"
>> "X1.24"
>> [163] "X2.24" "X3.24" "X4.24"
"X5.24" "X6.24" "X7.24" "X8.24"
"X1.25"
>> "X2.25"
>> [172] "X3.25" "X4.25" "X5.25"
"X6.25" "X7.25" "X8.25" "X1.26"
"X2.26"
>> "X3.26"
>> [181] "X4.26" "X5.26" "X6.26"
"X7.26" "X8.26" "X1.27" "X2.27"
"X3.27"
>> "X4.27"
>> [190] "X5.27" "X6.27" "X7.27"
"X8.27" "X1.28" "X2.28" "X3.28"
"X4.28"
>> "X5.28"
>> [199] "X6.28" "X7.28" "X8.28"
"X1.29" "X2.29" "X3.29" "X4.29"
"X5.29"
>> "X6.29"
>> [208] "X7.29" "X8.29" "X1.30"
"X2.30" "X3.30" "X4.30" "X5.30"
"X6.30"
>> "X7.30"
>> [217] "X8.30" "X1.31" "X2.31"
"X3.31" "X4.31" "X5.31" "X6.31"
"X7.31"
>> "X8.31"
>> [226] "X1.32" "X2.32" "X3.32"
"X4.32" "X5.32" "X6.32" "X7.32"
"X8.32"
>> "X1.33"
>> [235] "X2.33" "X3.33" "X4.33"
"X5.33" "X6.33" "X7.33" "X8.33"
>>
>> What the names mean are behaviour.day the X is not important to the  
>> data, it
>> is the numbers I am trying to select on.
>>
>> So I want to split the data by day i.e. selecting for the number  
>> after the
>> decimal.
>>
>> I am using this code (where scananal is the data) with out looping  
>> so the
>> number following the decimal I change manually (NB the data have been
>> changed to character):
>>
>
> You need to learn the special character"$" which marks the no- 
> character end of string. After creating a replica of your column- 
> names with scan and grep:
> inp <- scan(what="character")
> inX <- inp[grep("X", inp)]
>
> > DAY <- grep("(X[[:digit:]]+).3$",inX)
> > inX[DAY]
> [1] "X1.3" "X2.3" "X3.3" "X4.3"
"X5.3" "X6.3" "X7.3" "X8.3"
>
>> DAY <- grep("(X[[:digit:]]+).3",colnames(scananal))
>>
>> However, this will select for day 3, 30, 31, 32, etc I have tried  
>> to use
>> fixed = TRUE, but that just returns integer(0). But if I use 30, it  
>> will
>> select only 30. Not sure what I'm doing wrong here, and I assumed  
>> that fixed
>> = T would fix this, but doesn't.
>>
>> I have tried to loop this too, but with no luck, so if anyone can  
>> point me
>> in the right direction about how to loop using grep I would be most
>> grateful!
>>
>> The main problem I have is where to put the loop, for example:
>>
>> for(i in 1:33){
>> print(i)
>> DAY[[i]] <-
grep("(X[[:digit:]]+).[[i]]",colnames(scananal))
>> }
Hit the send button a bit prematurely. I have not figured out what  
sort of process or result you hope to achieve but perhaps showing how  
to improve the use of grep inside a loop will help:

for(i in 1:33){
patt <- paste("(X[[:digit:]]+).", i, "$",
sep="");
if (length(inX[grep(patt,inX)]) >0 ) { DAY[i] <-  
list( grep(patt,inX) ) }
}

 > DAY[1:5]
[[1]]
[1] 1 2 3 4 5 6 7 8

[[2]]
[1]  9 10 11 12 13 14 15 16

[[3]]
[1] 17 18 19 20 21 22 23 24

[[4]]
NULL

[[5]]
[1] 25 26 27 28 29 30 31 32


This first constructs a pattern. It also needs to test if there are  
any results at each iteration because there are no days=="4". Unless  
you supply the result of grep() as a list it only records the first  
day in a series, so  it only gives you the starting locations. Maybe  
if you clarified what you will be doing with this DAY construct, there  
might be more of a target to shoot for. You could use lapply on those  
column numbers at the moment.
> -- 
David Winsemius, MD
West Hartford, CT

Henrique Dallazuanna

2010-Aug-10 14:29 UTC

head link

[R] grep problem decimal points looping

Try this also:
nm <- scan('clipboard', what = '')
transform(structure(do.call(rbind, strsplit(nm[-1], "\\.")), .Dimnames
list(NULL, c('V1', 'V2'))), V1 = gsub("X",
"", V1))

On Tue, Aug 10, 2010 at 10:17 AM, RCulloch <ross.culloch@dur.ac.uk> wrote:
>
> Hi R Users,
>
> I have been trying to work out how to rename column names using grep,
> basically I have generated these column names using tapply:
>
>  [1] "NAME"  "X1.1"  "X2.1"  "X3.1"
"X4.1"  "X5.1"  "X6.1"  "X7.1" 
"X8.1"
>  [10] "X1.2"  "X2.2"  "X3.2" 
"X4.2"  "X5.2"  "X6.2"  "X7.2" 
"X8.2"
>  "X1.3"
>  [19] "X2.3"  "X3.3"  "X4.3" 
"X5.3"  "X6.3"  "X7.3"  "X8.3" 
"X1.5"
>  "X2.5"
>  [28] "X3.5"  "X4.5"  "X5.5" 
"X6.5"  "X7.5"  "X8.5"  "X1.6" 
"X2.6"
>  "X3.6"
>  [37] "X4.6"  "X5.6"  "X6.6" 
"X7.6"  "X8.6"  "X1.8"  "X2.8" 
"X3.8"
>  "X4.8"
>  [46] "X5.8"  "X6.8"  "X7.8" 
"X8.8"  "X1.9"  "X2.9"  "X3.9" 
"X4.9"
>  "X5.9"
>  [55] "X6.9"  "X7.9"  "X8.9" 
"X1.10" "X2.10" "X3.10" "X4.10"
"X5.10"
> "X6.10"
>  [64] "X7.10" "X8.10" "X1.12"
"X2.12" "X3.12" "X4.12" "X5.12"
"X6.12"
> "X7.12"
>  [73] "X8.12" "X1.13" "X2.13"
"X3.13" "X4.13" "X5.13" "X6.13"
"X7.13"
> "X8.13"
>  [82] "X1.14" "X2.14" "X3.14"
"X4.14" "X5.14" "X6.14" "X7.14"
"X8.14"
> "X1.15"
>  [91] "X2.15" "X3.15" "X4.15"
"X5.15" "X6.15" "X7.15" "X8.15"
"X1.16"
> "X2.16"
> [100] "X3.16" "X4.16" "X5.16"
"X6.16" "X7.16" "X8.16" "X1.17"
"X2.17"
> "X3.17"
> [109] "X4.17" "X5.17" "X6.17"
"X7.17" "X8.17" "X1.18" "X2.18"
"X3.18"
> "X4.18"
> [118] "X5.18" "X6.18" "X7.18"
"X8.18" "X1.19" "X2.19" "X3.19"
"X4.19"
> "X5.19"
> [127] "X6.19" "X7.19" "X8.19"
"X1.20" "X2.20" "X3.20" "X4.20"
"X5.20"
> "X6.20"
> [136] "X7.20" "X8.20" "X1.21"
"X2.21" "X3.21" "X4.21" "X5.21"
"X6.21"
> "X7.21"
> [145] "X8.21" "X1.22" "X2.22"
"X3.22" "X4.22" "X5.22" "X6.22"
"X7.22"
> "X8.22"
> [154] "X1.23" "X2.23" "X3.23"
"X4.23" "X5.23" "X6.23" "X7.23"
"X8.23"
> "X1.24"
> [163] "X2.24" "X3.24" "X4.24"
"X5.24" "X6.24" "X7.24" "X8.24"
"X1.25"
> "X2.25"
> [172] "X3.25" "X4.25" "X5.25"
"X6.25" "X7.25" "X8.25" "X1.26"
"X2.26"
> "X3.26"
> [181] "X4.26" "X5.26" "X6.26"
"X7.26" "X8.26" "X1.27" "X2.27"
"X3.27"
> "X4.27"
> [190] "X5.27" "X6.27" "X7.27"
"X8.27" "X1.28" "X2.28" "X3.28"
"X4.28"
> "X5.28"
> [199] "X6.28" "X7.28" "X8.28"
"X1.29" "X2.29" "X3.29" "X4.29"
"X5.29"
> "X6.29"
> [208] "X7.29" "X8.29" "X1.30"
"X2.30" "X3.30" "X4.30" "X5.30"
"X6.30"
> "X7.30"
> [217] "X8.30" "X1.31" "X2.31"
"X3.31" "X4.31" "X5.31" "X6.31"
"X7.31"
> "X8.31"
> [226] "X1.32" "X2.32" "X3.32"
"X4.32" "X5.32" "X6.32" "X7.32"
"X8.32"
> "X1.33"
> [235] "X2.33" "X3.33" "X4.33"
"X5.33" "X6.33" "X7.33" "X8.33"
>
> What the names mean are behaviour.day the X is not important to the data,
> it
> is the numbers I am trying to select on.
>
> So I want to split the data by day i.e. selecting for the number after the
> decimal.
>
> I am using this code (where scananal is the data) with out looping so the
> number following the decimal I change manually (NB the data have been
> changed to character):
>
> DAY <- grep("(X[[:digit:]]+).3",colnames(scananal))
>
> However, this will select for day 3, 30, 31, 32, etc I have tried to use
> fixed = TRUE, but that just returns integer(0). But if I use 30, it will
> select only 30. Not sure what I'm doing wrong here, and I assumed that
> fixed
> = T would fix this, but doesn't.
>
> I have tried to loop this too, but with no luck, so if anyone can point me
> in the right direction about how to loop using grep I would be most
> grateful!
>
> The main problem I have is where to put the loop, for example:
>
> for(i in 1:33){
> print(i)
> DAY[[i]] <- grep("(X[[:digit:]]+).[[i]]",colnames(scananal))
> }
>
>
> which doesn't work, and no doubt there are obvious reasons for this!
Any
> help would be much appreciated,
>
> All the best,
>
> Ross
>
>
>
>
>
>
> --
> View this message in context:
>
http://r.789695.n4.nabble.com/grep-problem-decimal-points-looping-tp2319773p2319773.html
> Sent from the R help mailing list archive at Nabble.com.
>
> ______________________________________________
> R-help@r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide
> http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>


-- 
Henrique Dallazuanna
Curitiba-Paraná-Brasil
25° 25' 40" S 49° 16' 22" O

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R help - Aug 2010 - grep problem decimal points looping

[R] grep problem decimal points looping

[R] grep problem decimal points looping

[R] grep problem decimal points looping

[R] grep problem decimal points looping

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