[Rd] Dangerous Bug with IF function of R

salmajj salmajj at softhome.net
Mon Apr 18 18:12:41 CEST 2011


hi!
there is a bug with the IF operator that is really dangerous!
please try the code below and if someone could explain to me why when (q is
equal to 0.8, 0.9 or 1) R do not print it?

q=0
for (j in 1:11){

if ((q==1)){
print(q)
	}			
q=q+0.1
}

so in this code q is incremented from 0 to 1.1. but R do not capture print
the value 1, 0.8 and 0.9 !! try to change (q==0.4) it gonna print 0.4. but
if you put q==0.8 or 0.9 or 1 it doesn't work!!!
please try it it is amazing!!!

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