equation solver
On 24-10-2012, at 10:04, pina <pina.gio at hotmail.it> wrote:
Hi, I'm Pina and I'm a student in geology. I'm working with spectral profile of sand and I have to find the similarity between one spectral profile selected by hyperspectral image anche one that I created to mix different percentage of 4 mineral component. I have to find the best mix of percentage of this 4 mineral in order to have the best likeness with the spectral profile chose by hyperspectral image. Untill now I worked with excel using the function equation solver to find the best fit but I 'd like to know if is possible do this operation working in R.
It looks like you need something that can do optimization. R provides optim() and nlminb(). A similar question was posted several days ago. See http://r.789695.n4.nabble.com/Optimization-in-R-similar-to-MS-Excel-Solver-td4646759.html You might have some use for package limSolve and function lsei. Also see the CRAN Optimization Task View (http://cran.r-project.org/web/views/Optimization.html) Berend
Thanks for the attention. I'm looking forward to hearing from you. Regards. Pina. -- View this message in context: http://r.789695.n4.nabble.com/equation-solver-tp4647287.html Sent from the R help mailing list archive at Nabble.com.
______________________________________________ R-help at 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.