[R] Reading user input

[Petr Klasterecky]

???
The code below is correct and does exactly what you described - just 
check the value of ANSWER. R is paused and the user-specified valued is 
assigned to ANSWER when you call your function, not inside. In your 
former code ANSWER was a local variable which 'died' when your function 
finished.

Petr

projection83 napsal(a):
> I dont know if thats what i want (its not working like i want).  I would like
> to have R pause, wait for a user input of a number, then store that number
> as a variable to use in the next calculation it does... 
> Or should the below do that?
> 
> 
> jim holtman wrote:
>> what you want is:
>>
>> defineSamples<- function()
>>        {
>>              readline("enter the number of groups: ")
>>        }
>>
>> ANSWER <- defineSamples()
>>
>>
>>
>> On 4/1/07, projection83 <mkurowski at gmail.com> wrote:
>>>
>>> Hi there, this is a very easy question, i just cant seem to find a
>>> straight
>>> answer- i need this one thing, then i can finish my project for this
>>> term.
>>>
>>> I am making an interactive application with R where I get the user to
>>> input
>>> numbers that the program then uses in the analysis.  I have figured out a
>>> lot of stuff, yet this is somehow hard to find the answer to:
>>> #--------------------------------------------------
>>> defineSamples<- function()
>>>        {
>>>              ANSWER<-numeric()
>>>              ANSWER<-readline("enter the number of groups: ")
>>>        }
>>>
>>> runit()
>>>
>>> ANSWER # this does not hold the value the user inputs
>>> #-------------------------------------------------
>>>
>>> If I then see what ANSWER is storing it says "numeric(0)", how do I get
>>> this
>>> to store whatever number the user inputs (and am i going to have to
>>> convert
>>> from a string to a number???
>>>
>>> THANKs for any help!
>>> --
>>> View this message in context:
>>> http://www.nabble.com/Reading-user-input-tf3503016.html#a9783275
>>> Sent from the R help mailing list archive at Nabble.com.
>>>
>>> ______________________________________________
>>> R-help at stat.math.ethz.ch 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 you are trying to solve?
>>
>> 	[[alternative HTML version deleted]]
>>
>> ______________________________________________
>> R-help at stat.math.ethz.ch 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.
>>
>>
> 

-- 
Petr Klasterecky
Dept. of Probability and Statistics
Charles University in Prague
Czech Republic