R help - Dec 2008 - Convert ASCII string to Decimal in R (vice versa) was: Hex

Hi Dieter,

Sorry my mistake. I wanted to convert them
into Decimal (not Hexadecimal).

Given this string, the desired answer follows:
> ascii_str  <- "ORQ>IK"
79 82 81 62 73 75
> ascii_str2 <- "FDC"
70 68 67

- Gundala Viswanath
Jakarta - Indonesia



On Mon, Dec 22, 2008 at 5:49 PM, Dieter Menne
<dieter.menne at menne-biomed.de> wrote:
> Gundala Viswanath <gundalav <at> gmail.com> writes:
>
>> For example I have the following ASCII strings:
>>
>> > ascii_str  <- "ORRRIROOQRQQOLORRRRRRQRROKK>IKFAA"
>> > ascii_str2 <-
"FFFFFFFFFFDDDDDDDDDDCCCCC>>>>>>>>>"
>>
>> Each character in the above string represent a hexadecimal value.
>> I want to translate those string into an array (of size == string
length)
>> which contain hexadecimal conversion.
>>
>> as.hexmode doesn't seem to do the job.
>
> Trying again, simplified
>
> ascii_str  <- "ORQ>IK"
> ascii_str2 <- "FDC"
>
> What do you want as output in both cases? I can partially understand the
second
> case, but not the first.
>
> Dieter
>
> ______________________________________________
> 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.
>

?raw

On Mon, Dec 22, 2008 at 4:22 AM, Gundala Viswanath <gundalav at gmail.com>
wrote:
> Hi Dieter,
>
> Sorry my mistake. I wanted to convert them
> into Decimal (not Hexadecimal).
>
> Given this string, the desired answer follows:
>
>> ascii_str  <- "ORQ>IK"
> 79 82 81 62 73 75
>
>> ascii_str2 <- "FDC"
> 70 68 67
>
> - Gundala Viswanath
> Jakarta - Indonesia
>
>
>
> On Mon, Dec 22, 2008 at 5:49 PM, Dieter Menne
> <dieter.menne at menne-biomed.de> wrote:
>> Gundala Viswanath <gundalav <at> gmail.com> writes:
>>
>>> For example I have the following ASCII strings:
>>>
>>> > ascii_str  <-
"ORRRIROOQRQQOLORRRRRRQRROKK>IKFAA"
>>> > ascii_str2 <-
"FFFFFFFFFFDDDDDDDDDDCCCCC>>>>>>>>>"
>>>
>>> Each character in the above string represent a hexadecimal value.
>>> I want to translate those string into an array (of size == string
length)
>>> which contain hexadecimal conversion.
>>>
>>> as.hexmode doesn't seem to do the job.
>>
>> Trying again, simplified
>>
>> ascii_str  <- "ORQ>IK"
>> ascii_str2 <- "FDC"
>>
>> What do you want as output in both cases? I can partially understand
the second
>> case, but not the first.
>>
>> Dieter
>>
>> ______________________________________________
>> 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.
>>
>
> ______________________________________________
> 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
Cincinnati, OH
+1 513 646 9390

What is the problem that you are trying to solve?

Gundala Viswanath <gundalav <at> gmail.com> writes:
> Sorry my mistake. I wanted to convert them
> into Decimal (not Hexadecimal).
> 
> Given this string, the desired answer follows:
> 
> > ascii_str  <- "ORQ>IK"
> 79 82 81 62 73 75
> 
> > ascii_str2 <- "FDC"
> 70 68 67
You might have a look at Henrik Bengtsson's charToInt in R.oo. And peek at
the
code with some nice caveats from Peter Dalgaard and Brian Ripley.

Dieter

Gundala Viswanath <gundalav <at> gmail.com> writes:
> Sorry my mistake. I wanted to convert them
> into Decimal (not Hexadecimal).
> 
> Given this string, the desired answer follows:
> 
> > ascii_str  <- "ORQ>IK"
> 79 82 81 62 73 75
> 
> > ascii_str2 <- "FDC"
> 70 68 67
> 
 lapply("ABCD",charToRaw)[[1]]

Dieter