[R] rounding problem

[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:

>
> 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
>
>> P[2]/334
> [1] 0.0001279107
>> hladane[1]
> [1] 0.0001279107
>> P[2]/334==hladane[1]
> [1] FALSE
>> abs(P[2]/334 - hladane[1]) < 0.0000001
> [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.
> --
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_____________________________

Baptiste Auguié

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

Phone: +44 1392 264187

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