[R] ASCII values to Decimal

[jim holtman]

Try this:

> str(x)
'data.frame':   111 obs. of  5 variables:
 $ V7   : int  0 0 0 0 0 0 0 0 0 0 ...
 $ V8   : int  1 1 1 1 1 1 1 1 1 1 ...
 $ V9   : chr  "G" "T" "C" "A" ...
 $ V10  : chr  "`" "a" "a" "a" ...
 $ value: chr  "96" "97" "97" "97" ...
> x$value <- sapply(x$V10, function(a) paste(as.integer(charToRaw(a)), collapse = ' '))
> head(x, 40)
   V7 V8 V9  V10 value
1   0  1  G    `    96
2   0  1  T    a    97
3   0  1  C    a    97
4   0  1  A    a    97
5   0  1  G    _    95
6   0  1  G    Z    90
7   0  1  C    ^    94
8   0  1  C   \\    92
9   0  1  A    Z    90
10  0  1  T    a    97
11  0  1  g    ^    94
12  0  1  A   \\    92
13  0  1  C    _    95
14  0  1  G    a    97
15  0  1  C    X    88
16  0  1  C    `    96
17  0  1  G    a    97
18  0  1  G    _    95
19  0  1  G    a    97
20  0  1  G    a    97
21  0  1  A    a    97
22  0  1  G    a    97
23  0  1  G    a    97
24  0  1  C    a    97
25  0  1  A    a    97
26  0  1  C    _    95
27  0  1  A    X    88
28  0  1  g    `    96
29  0  2 GG \\\\ 92 92
30  0  2 GG   [^ 91 94
31  0  2 AA   Y^ 89 94
32  0  2 GG   `] 96 93
33  0  2 AA   a^ 97 94
34  0  2 GG   ]^ 93 94
35  0  2 AA  a\\ 97 92
36  0  2 GG   a] 97 93
37  0  2 GG   Z] 90 93
38  0  2 GG   ]^ 93 94
39  0  2 CC  W\\ 87 92
40  0  2 CC   a] 97 93
>


2011/7/9 Bansal, Vikas <vikas.bansal at kcl.ac.uk>:
> Dear all,
>
> I have a file that is summary.txt(I have attached it) .we can read
>  this file using-
>
>  dfa=read.table("summar.txt",fill=T,colClasses = "character",header=T)
>
>  In V10 column I have  ASCII values which I want to convert into decimal
>  numbers -
>
> my  data frame(dfa) which is like-
>
>     V7 V8  V9  V10
> 1    0  1   G    `
> 2    0  1   T    a
> 3    0  1   C    a
> 4    0  1   A    a
> 5    0  1   G    _
> 6    0  1   G    Z
> 7    0  1   C    ^
> 8    0  1   C   \\
> 9    0  1   A    Z
> 10   0  1   T    a
> 11   0  1   g    ^
> 12   0  1   A   \\
> 13   0  1   C    _
> 14   0  1   G    a
> 15   0  1   C    X
> 16   0  1   C    `
> 17   0  1   G    a
> 18   0  1   G    _
>
>
> Column V10 contains ASCII values.I want to convert them into decimal.
>
> Can you please help me.
>
>
> Thanking you,
> Warm Regards
> Vikas Bansal
> Msc Bioinformatics
> Kings College London
> ______________________________________________
> 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.
>
>



-- 
Jim Holtman
Data Munger Guru

What is the problem that you are trying to solve?