Full_Name: Gr?goire Talbot Version: 2.7.0 OS: windows 2000 Submission from: (NULL) (147.99.1.149) Try this :
a=seq(from=0.1,to=1,by=0.1) a
[1] 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 Ok
a[1]==0.1
[1] TRUE Ok
a[3]==0.3
[1] FALSE !!!
a[3]
[1] 0.3 !!!
a[3]=0.3 a[3]==0.3
[1] TRUE ??????????????????????????