Skip to content

rounding problem

3 messages · Baptiste Auguie, Peterko

Peterko
# 
hi i am creating some variables from same data, but somewhere is different
rouding.
look:
 P = abs(fft(d.zlato)/480)^2 
 hladane= sort(P,decreasing=T)[1:10]/480 
  
 pozicia=c(0,0,0,0,0) 
 for (j in 1:5){ for (i in 2:239){
  if (P[i]/480==hladane[2*j-1]){pozicia[j]=i-1}}}
 period=479/pozicia
[1] 0.0001279107 
 > hladane[1]
 [1] 0.0001279107
 > P[2]/334==hladane[1]
 [1] FALSE
[1] TRUE

It is possible to avoid it ?
I know in this exam i can use 2x if to eliminate this rouding, but i need to
fix it in general.
Baptiste Auguie
# 
Hi,

you probably want to use ?all.equal instead of "=="

I couldn't run your example, though

Hope this helps,

baptiste
On 27 Feb 2009, at 10:32, Peterko wrote:

            

      
      
      
    

        

      
      
    

        
_____________________________

Baptiste Augui?

School of Physics
University of Exeter
Stocker Road,
Exeter, Devon,
EX4 4QL, UK

Phone: +44 1392 264187

http://newton.ex.ac.uk/research/emag

  
  


  


      

    

    

      
      

        


  

        

      Peterko
    

    

      
      #
    

  


  

      
all.equal is what i need, many thanks to help me

        
baptiste auguie-2 wrote: