library(MASS) check out fitdistr( ) ... ?fitdistr This isn't 'solver', but then again R isn't MS Excel!
Roslina Zakaria wrote: > Dear R-users, > Is there any function in R that works similarly like solver in Excel. I have > a set of daily rainfall data and I would like to estimate alpha and beta for > the gamma function. > > Here is my daily rainfall data: > [1] 0.2 1.2 0.0 0.0 0.0 0.0 0.0 0.6 0.0 0.0 0.0 0.0 0.0 0.0 > 0.0 0.0 4.8 1.6 0.0 1.8 1.8 0.0 2.6 > [24] 33.0 19.0 0.0 0.0 0.6 0.0 0.0 6.8 0.2 0.0 0.0 0.0 0.0 0.2 > 0.0 0.0 0.0 0.0 0.0 0.0 1.6 5.4 0.0 > [47] 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.2 0.0 0.0 6.0 6.6 > 0.0 0.0 0.0 0.0 0.2 0.0 0.0 0.0 0.0 > [70] 0.0 0.0 0.0 0.0 0.0 0.0 0.0 12.8 0.0 0.0 0.0 0.0 0.0 0.0 > 0.2 0.0 3.8 2.2 1.2 12.2 3.0 0.0 0.0 > [93] 0.0 0.0 5.0 3.6 0.0 0.0 0.0 1.8 1.8 1.2 1.2 1.6 3.6 0.2 > 0.8 0.0 0.0 0.0 0.0 0.0 1.4 16.6 0.0 > [116] 1.6 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 > 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.8 5.4 > [139] 1.6 5.8 0.4 34.2 0.0 0.4 0.4 1.4 1.8 0.0 0.0 0.2 0.0 2.4 > 24.2 0.4 0.0 0.0 0.0 1.6 0.0 0.0 0.0 > [162] 0.0 0.2 0.0 0.0 0.0 4.4 0.0 4.4 21.2 3.0 0.4 0.0 0.0 0.0 > 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 > [185] 0.0 0.8 0.8 3.6 0.0 1.2 0.0 0.0 0.0 0.0 0.0 0.0 13.8 1.6 > 6.6 5.0 0.0 1.2 0.0 1.0 1.2 2.4 6.0 > [208] 2.8 7.0 0.2 0.6 0.0 0.0 0.0 0.0 0.0 3.2 0.2 2.4 0.0 0.0 > 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 2.0 > [231] 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.2 6.6 2.4 1.0 0.0 0.0 0.0 > 0.0 0.0 0.0 0.0 0.0 1.6 0.0 0.0 0.0 > [254] 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.4 2.6 0.0 0.6 > 4.8 0.0 0.2 3.8 17.0 0.2 0.0 0.0 0.0 > [277] 43.6 2.6 0.0 0.0 0.0 0.4 8.2 14.4 0.2 0.0 0.0 0.0 1.8 0.0 > 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.2 > [300] 0.0 > > Thank you in advance for your help. > > > > ____________________________________________________________________________________ > Looking for last minute shopping deals? > > ______________________________________________ > R-help@r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. > > -- Dr Richard Rowe Zoology & Tropical Ecology School of Marine & Tropical Biology James Cook University Townsville 4811 AUSTRALIA ph +61 7 47 81 4851 fax +61 7 47 25 1570 JCU has CRICOS Provider Code 00117J ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.