R is a computing tool, and each package has implemented algorithms that have history and books and papers that allow those algorithms to be used in a variety if computing environments... from Fortran to Excel to Java to ... R, and probably beyond.
>From your description I am going to hazard a guess that perhaps you are >considering regression, where the ranges of some variables may be much smaller >than others, and yes, among the many types of regression there are many that >accept weights... constant values used to scale each "column" of data so that >they all have similar ranges. You might be able to get along just fine with >the lm function from base R [1], or you might need something more specialized >as [2] might discuss. Or you may have something else in mind, but only you can >clarify what that might be. It may be wise to do a bit of reading so you know which algorithms you want to apply, and then give us a reproducible, small example of what you have and what you want to get out of this analysis. To do that, you will really need to read and follow the advice in [3]. [1] type "?lm" at the R prompt to get details about that function. If that is too terse, get a text book. [2] https://cran.r-project.org/web/views/Multivariate.html [3] http://stackoverflow.com/questions/5963269/how-to-make-a-great-r-reproducible-example --------------------------------------------------------------------------- Jeff Newmiller The ..... ..... Go Live... DCN:<jdnew...@dcn.davis.ca.us> Basics: ##.#. ##.#. Live Go... Live: OO#.. Dead: OO#.. Playing Research Engineer (Solar/Batteries O.O#. #.O#. with /Software/Embedded Controllers) .OO#. .OO#. rocks...1k --------------------------------------------------------------------------- Sent from my phone. Please excuse my brevity. On July 26, 2015 11:37:31 PM PDT, Amelia Marsh <amelia_mars...@yahoo.com> wrote: >Dear Sir, > >I do appreciate your views. Yes even I was also aware about the non >clarity in the question. Actaully, I have a large data having lots of >data of low magnitude and few of very high magnitude. In order to >analyse the same, some very senior person in the office suggested me to >assign weights to these obervations. > >Problem is this senior person is on office tour travelling into >Australia and unfortutely I can't even think of reverting to him owing >to his seniority. I tried to find through some R libraries if I can get >something about sample weights. > >But as you have pointed out, yes my question is too vague and feel >really sorry about the same. And I have recently started with R >language hence I am trying to learn some basics about R. Thanks for >pointing the difference between data.frame and vector. > > >Thanks again for your response. > >Regards > >Amelia > >_____________________________________________________________________________________________ > > > >On Monday, 27 July 2015 11:49 AM, Jeff Newmiller ><jdnew...@dcn.davis.ca.us> wrote: >If you have a clear idea what meaning those weights have (?) in the >context of a specific calculation (?), and you know what the weights >are (?), then it is usually trivially easy to do in R. However, your >question is vague on all of those points, so offering you a solution >seems like an invitation for you to mis-use any particular solution >offered. Please try to clarify what you are doing that "weights" will >help with, and yes, there may just be a weights argument to the >function that does that analysis that we can point you to. > >You also are unclear what the difference between a data frame and a >vector is... if it helps, a data frame is a list of vectors (typically >referred to as "columns") all with the same length... your "mydat" is >a vector, not a data frame. >--------------------------------------------------------------------------- >Jeff Newmiller The ..... ..... Go >Live... >DCN:<jdnew...@dcn.davis.ca.us> Basics: ##.#. ##.#. Live >Go... > Live: OO#.. Dead: OO#.. Playing >Research Engineer (Solar/Batteries O.O#. #.O#. with >/Software/Embedded Controllers) .OO#. .OO#. >rocks...1k >--------------------------------------------------------------------------- > >Sent from my phone. Please excuse my brevity. > > >On July 26, 2015 11:00:54 PM PDT, Amelia Marsh via R-help ><r-help@r-project.org> wrote: >>Dear R Forum >> >>I have a data.frame as >> >> >>mydat = >>c(6,6,5,6,4,6,8,4,6,6,6,3,4,6,5,7,7,4,3,5,5,5,3,6,7,4,4,7,4,3,4,6,4,6,5,4,4,7,6,8,5,6,5,5,8,2,3,5,7,5) >> >>Is there any library or way in R to allocate weights to these values? >>Actually I am having a large data, but for illustrative purpose, have >>considered just a small part of the same. >> >>Regards >> >>Amelia >> >>______________________________________________ >>R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see >>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. ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see 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.
