x=.94 (PR#10529)
Please do read the R FAQ: "Why doesn't R think these numbers are equal?" and before posting, you should have read the R FAQ: "What is a bug?" that points you to the former FAQ! Uwe Ligges
jrecta at gmail.com wrote:
I am using R Version 2.6.2007-11-23. I do not know if the problem exists for other values or versions I encountered a problem when searching for the number 0.94 and 0.95 in a vector of values. I illustrate it below by creating a sequence of values 2 ways and then looking for the value 0.94 (same result for 0.95). It looks like the vector generated by seq( ) is a bit off:
a<-seq(.9,.95,by=.01) a
[1] 0.90 0.91 0.92 0.93 0.94 0.95
b<-c(.90,.91,.92,.93,.94,.95) b
[1] 0.90 0.91 0.92 0.93 0.94 0.95
a==.94
[1] FALSE FALSE FALSE FALSE FALSE FALSE
b==.94
[1] FALSE FALSE FALSE FALSE TRUE FALSE
a-b
[1] 0.000000e+00 0.000000e+00 0.000000e+00 0.000000e+00 1.110223e-16 [6] 1.110223e-16 [[alternative HTML version deleted]]
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