R2.11.1 seq.int difference between by and length.out
What difference is it you are worried about:? identical(seq.int(0,1,length.out = 11), seq.int(0,1, by = 0.1)) # TRUE Though that may be OS dependent. M
On Tue, Apr 10, 2012 at 10:51 AM, Alexander <juschitz_alexander at yahoo.de> wrote:
Berend Hasselman wrote
On 10-04-2012, at 15:54, Alexander wrote:
I am working under R2.11.1 Windows and I was wondering why there is a difference between seq.int(0,1,by=0.1)[4]-0.3 seq.int(0,1,length.out=11)[4]-0.3 there is also the fact that seq(0,1,by=0.1)[4]-0.3 seq(0,1,length.out=11)[4]-0.3 but I think this can be explained by floating precision...
R FAQ: ?http://cran.r-project.org/doc/FAQ/R-FAQ.html 7.31 Why doesn't R think these numbers are equal?
This explains what the difference, but the problem for seq(2)*seq(2)==2 is not the same as 0.3+0.1-0.4==0 There must be a difference in the calculation for by and length.out in seq.int otherwise there wouldn't be a difference in seq.int seq.int(0,1,length.out=11)[4]-seq.int(0,1,by=0.1)[4] I am more interested in the generation of the sequence... Berend Hasselman wrote
Berend
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