Re: [R] Solver in R
Use BBsolve in the BB package. It'll do darn near anything. Carl __ 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.
Re: [R] Solver in R
You can also have a look at and try package nleqslv. Berend -- View this message in context: http://r.789695.n4.nabble.com/Solver-in-R-tp2535115p2535813.html Sent from the R help mailing list archive at Nabble.com. __ 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.
Re: [R] Solver in R
Another idea. From your formulation it seems that r does not depend on t and Xt so you wouldn't need a solver. You could solve for r explicitly so r - R0/sum(Xt) /Berend -- View this message in context: http://r.789695.n4.nabble.com/Solver-in-R-tp2535115p2535815.html Sent from the R help mailing list archive at Nabble.com. __ 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.
Re: [R] Solver in R
On Sep 10, 2010, at 5:35 PM, Chien-Pang Chin wrote: Hi all: I'm looking for a package that similar to solver in MS. All I need is find a r to satisfy R0=sum( , where t are from 1 to n and Xt are come from another formula. The most package I found were to max or min the obj. function. Is there any package can do it? If you minimize R0 - sum(r * Xt ), you should get your answer. -- David. Thanks. Peter David Winsemius, MD West Hartford, CT __ 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.
Re: [R] Solver in R
On Sep 10, 2010, at 5:44 PM, David Winsemius wrote: On Sep 10, 2010, at 5:35 PM, Chien-Pang Chin wrote: Hi all: I'm looking for a package that similar to solver in MS. All I need is find a r to satisfy R0=sum( , where t are from 1 to n and Xt are come from another formula. The most package I found were to max or min the obj. function. Is there any package can do it? If you minimize , you should get your answer. Ooops, sorry. Make that: abs( R0 - sum(r * Xt ) ) # or ( R0 - sum(r * Xt ) )^2 -- David. Thanks. Peter David Winsemius, MD West Hartford, CT __ 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. David Winsemius, MD West Hartford, CT __ 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.
Re: [R] solver in R
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.
