Hi, Can anyone explain what is going on...!? For a vector
"x=seq(min,max,0.01)", when generating sub-vector "a" based on a starting
value "st", things go as expected as long as "st" is not too close to the
beginning of "x". For example, if x starts at -5 and increments by 0.01,
whenever I try to generate the sub-vector "a" (as below) with a starting
value of 0.49 or less it does not generate the expected output: The initial
value of "a" is wrong.
Thanks in advance for any clarity you can shed.
Gary
...(please see two versions of code below)....
#THIS WORKS...(st > -4.9)
min = -5; max = 1; x=seq(min,max,0.01)
st= -4.8 ; end= 0
a=x[((st-min)/0.01+1):((end-min)/0.01+1)]
n=(st-min)/0.01+1
#compare
a[1:10]; c(x[n:(n+9)])
#test...
n
x[1:n]; x[n] ### x[n]== x[1:n][n] ; As expected
##########################################################
# BUT THIS IS WEIRD!!...(st <= -4.9)
st= -4.90 ; end= 0 ### -> BUG in generation of a!!
a=x[((st-min)/0.01+1):((end-min)/0.01+1)];
n=(st-min)/0.01+1
#compare
a[1:10]; c(x[n:(n+9)])
#test
n
x[1:n]; x[n] ### NOW x[n] != x[1:n][n] !!?? What is going on!?
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