Hi This is the error I get with your code and this prevents us to give you reasonable help.
Error in eval.quoted(.variables, data) : object 'My_data' not found Petr > -----Original Message----- > From: r-help-boun...@r-project.org [mailto:r-help-bounces@r- > project.org] On Behalf Of Vincy Pyne > Sent: Wednesday, September 12, 2012 9:36 AM > To: R. Michael Weylandt > Cc: r-help@r-project.org > Subject: Re: [R] How to append the random no.s for different variables > in the same data.frame > > Dear Mr Weylandt and R helpers, > > Thanks a lot for your suggestion. Unfortunately the "return" statement > in my original R code returns me different results which are obtained > after processing the function I have constructed. > > My requirement for storing the product-wise random numbers is just a > part of my whole exercise. For each of the products, I generate a set > of random no.s, process these, construct some statistics and obtain > these statistics using the "Return" statement. So for each of the > products, I get these set of statistics generated and that is not my > problem. > > My problem is "BESIDES getting my required output (which anyways I am > getting)", I need the product-wise random numbers I have already > generated and store them together in a single data.frame. So a single > data.frame gives me all the product wise random nos. > > I am reproducing my problem once again - > > # ____________________________________ > > > library(plyr) > n = 100 > > my_code = function(product, output_avg, output_stdev) > > { > > BUR_mc = rnorm(n, output_avg, output_stdev) > > sim_BUR = data.frame(product, BUR_mc) > > write.csv(data.frame(sim_BUR), 'sim_BUR.csv', row.names = FALSE) > > return(list(output_avg, output_stdev)) > > } > > > result <- dlply(.data = My_data, .variables = "product", .fun = > function(x) > > my_code(product = x$product, output_avg = x$output_avg, > output_stdev = x$output_stdev)) > > > There > are some 12 products (and this may vary each time). In my original > code, the "return" statement returns me some other output. Here for > simplicity sake, I am just using the values as given in input. > > > PROBLEM > > I > want to store the random no.s (BUR_mc) as generated above for each of > the products and store them in a single data.frame. Now when I access > 'sim_BUR.csv', I get the csv file where the random nos. generated for > the last product are getting stored. I need something like > > product random no > product1 ....... > product1 > ....... > ............................. > > product1 ....... # (There will be 100 such > values for product1) > product2 ....... > product2 ....... > > ............................ > ............................ > product12 ...... > ............................ > product12 ....... > > > Thanking you in advance > > Vincy > > > [[alternative HTML version deleted]] ______________________________________________ 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.
