Hi R lovers! I'd like to know how to use the parameter 'start' in the function fitdistr() obviously I have to provide the initial value of the parameter to optimize except in the case of a certain set of given distribution
Indeed according to the help file for fitdistr " For the following named distributions, reasonable starting values will be computed if `start' is omitted or only partially specified: `cauchy', `gamma', `logistic', `negative binomial' (R only, parametrized by `mu' and `size'), `t', `uniform', `weibull'. " However I cannot fit an univariate distribution named 'test' I get this: >fitdistr(test,"lognormal") Error in fitdistr(test, "lognormal") : `start' must be a named list > fitdistr(test,"lognormal",start$meanlog=0,start$sdlog=1) Error: syntax error How I am supposed to type a value for start depending on the distribution on which I am fitting my set thanks ****************************************************************** The sender's email address has changed to firstname.lastname@ sgcib.com. You may want to update your personal address book. Please see http://www.sgcib.com for more information. ** This message and any attachments (the "message") are confide...{{dropped}} ______________________________________________ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help