[R] Mapping data onto score

[rcoder]

Thank you Ben! This is very clear.
rcoder


Ben Tupper wrote:
> 
> 
> On Jul 15, 2008, at 5:16 PM, rcoder wrote:
> 
>>
>> Hi Ben,
>> Yes, this is more or less what I want to do. I want to apply this  
>> data in
>> columns in a matrix, and insert the results to additional columns.  
>> I am not
>> entirely aware of a good way of doing this.
>>
>> e.g. take data from column B, apply normalisation, and feed output  
>> into
>> column C
>>
> 
> Oh,
> 
> I think you want to use cbind() to add columns to a matrix.  Perhaps  
> like this which works with the second column...
> 
> v <- matrix(data = rnorm(100), nrow = 10, ncol = 10)
> mm <- range(v[,2])
> s <- 10 * (v[,2]-mm[1])/(mm[2]-mm[1])
> v2 <- cbind(v, s)
> 
> Cheers,
> Ben
> 
> 
> 
>> Thanks,
>>
>> rcoder
>>
>>
>>
>> Ben Tupper wrote:
>>>
>>>
>>> On Jul 15, 2008, at 8:16 AM, rcoder wrote:
>>>
>>>>
>>>> Hi everyone,
>>>>
>>>> I want to score a set of data (-ve to +ve) using a 0-10 scale. I
>>>> have the
>>>> data in an R matrix, so I need to add another column, containing
>>>> the scores
>>>> and resave.
>>>>
>>>
>>> Hi,
>>>
>>> I am a little fuzzy on what you are asking, but my guess is that you
>>> want to normalize the data into the 0-1 range then multiply by 10.
>>>
>>> values <- rnorm(10) #some numbers
>>> mm <- range(values) #the minmax range
>>> scaled <- (values-mm[1])/(mm[2]-mm[1]) #normalize into 0-1
>>> scaled10 <- 10 * scaled #scale 0-10
>>>
>>> Is that what you seek?
>>> Ben
>>>
>>> ______________________________________________
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>>> PLEASE do read the posting guide
>>> http://www.R-project.org/posting-guide.html
>>> and provide commented, minimal, self-contained, reproducible code.
>>>
>>>
>>
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>>
>> ______________________________________________
>> 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.
> 
> Ben Tupper
> PemaquidRiver at tidewater.net
> 
> I GoodSearch for Ashwood Waldorf School.
> 
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> ______________________________________________
> 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.
> 
> 

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