[R] Stucked with as.numeric function

[Tóth Dénes]

>
> On Mar 21, 2011, at 2:59 PM, Tóth Dénes wrote:
>
>>
>> Hi,
>>
>> I guess you have commas as decimals in your data. Replace it to
>> decimal
>> points.
>
> If that is true then the easiest fix would be to set the proper
> decimal argument in read.table

In this particular case, sure. If patsko happens to work with
international folks, with different softwares, the easiest way is to keep
your OS language settings in English, and maintain your data using always
the same (English-like) format, avoid unicode characters etc.

Denes



>
> ?read.table  # with ... , dec = "," ,
>
> --
> david.
>
>
>
>>
>> Best,
>>  Denes
>>
>>
>>>
>>> On Mar 21, 2011, at 1:57 PM, patsko at gmx.de wrote:
>>>
>>>> Hi list,
>>>>
>>>> I have problems with the as.numeric function. I have imported
>>>> probabilities from external data, but they are classified as factors
>>>> as str() shows. Therefore my goal is to convert the colum from
>>>> factor to numeric level with keeping the decimals.
>>>>
>>>> I have googled the problem for a while now and kept to several
>>>> advices like
>>>> http://cran.r-project.org/doc/FAQ/R-FAQ.html#How-do-I-convert-factors-to-numeric_003f
>>>> and history from the list but it is impossible for me to convert
>>>> the data to numeric without rounding or ranking the values.
>>>
>>> Are you sure about rounding? The console display of numbers is
>>> determined by options that can be changed:
>>>
>>> ?options
>>>
>>> The "ranking" may represent an error on your part. You offer nothing
>>> that can be used to check your interpretations. Why not offer:
>>>
>>> dput(head(data_object))
>>>
>>>
>>>>
>>>> E.g.:
>>>> Simply using as.numeric puts the values into ranked classes as
>>>> explained in the manual,
>>>> As.numeric(as.character(probas)) as well as as.numeric(levels(probas
>>>> $forecast_probs))[as.integer(probas$forecast_probs)]
>>>> return “NA” for every row.
>>>
>>> Then maybe they were NA to begin with?
>>>
>>> Have you tried importing with colClasses set to "numeric" for the
>>> columns you knew to be such?
>>>>
>>>
>>> --
>>>
>>> David Winsemius, MD
>>> Heritage Laboratories
>>> West Hartford, CT
>>>
>>> ______________________________________________
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>>> 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
> Heritage Laboratories
> West Hartford, CT
>
>