Hi, Mark, Not without seeing you data. You only provide the first value is a warning message below.
--sundar Mark Miller wrote: > Can you advise another distribution, was thinking of exponential, but was > advised poisson since independent, forgot about requiring integers > > > On Wednesday 02 November 2005 14:44, you wrote: > >>Mark Miller wrote: >> >>>I am using the MASS library function >>> >>>fitdistr(x, dpois, list(lambda=2)) >>> >>>but I get >>> >>>Error in optim(start, mylogfn, x = x, hessian = TRUE, ...) : >>> Function cannot be evaluated at initial parameters >>>In addition: There were 50 or more warnings (use warnings() to see the >>>first 50) >>> >>>and all the first 50 warnings say >>> >>>1: non-integer x = 1.452222 >>>etc >>> >>>Can anyone tell me what I am doing wrong. p.s. the data was read in from >>>a .csv file that I wrote using octave >> >>Hi, Mark, >> >>If you think the data are poisson, the observations should be integers. >> >>--sundar ______________________________________________ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html