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orig_ist
2005 May 18
1
'fitdistr' and two views of the same data?
...The short version of the question is this:
When I ask 'fitdistr' to try and fit my distribution as a "weibull"
distribution, it comes up with some rather wacky parameters.
If I take the same distribution, and do something like
newdist <- mapply(function(x) ((x %/% 20) + 1), origdist)
which effectively forces the data into a histogram, 'fitdist' on
'newdist' gives me an entirely different set of parameters.
Distressingly, the parameters it gives me are, upon inspection, good;
that is, the parameters reported fit the distribution of the original
data much better...