[R] Scaling X axis from -1 to 1

[Marc Schwartz]

That would probably be Jim's own 'plotrix' package:

  http://finzi.psych.upenn.edu/R/library/plotrix/html/rescale.html

HTH,

Marc Schwartz


on 09/15/2008 08:49 PM Gundala Viswanath wrote:
> Dear Jim,
> 
> I cannot find the function "rescale".
> Does it belong to any particular package?
> 
> - Gundala Viswanath
> Jakarta - Indonesia
> 
> 
> 
> On Mon, Sep 15, 2008 at 5:24 PM, Jim Lemon <jim at bitwrit.com.au> wrote:
>> Gundala Viswanath wrote:
>>> Hi,
>>>
>>> I have a density plot in which the x axis
>>> ranged from 0 to 2000.
>>>
>>> How can I scale the data so that the x-axis
>>> is scaled in -1 to 1 form?
>>>
>>>
>> Hi Gundala,
>> If your data is named "mydata":
>>
>> mynewdata<-rescale(mydata,c(-1,1))
>>
>> This will linearly transform "mydata" into the range -1 to 1. You may also
>> want to manually create the axis on the plot:
>>
>> plot(mynewdata,axes=FALSE,...)
>> box()
>> axis(1)
>> axis(2,at=c(-1,0,1),labels=c("0","1000","2000"))
>>
>> If you want the original values.
>>
>> Jim
>>
>> axis
>>