[R] How to do a target value search analogous to Excel Solver

Hi all, i'm trying to find a solver possibility analogous to the Excel Solver in R. Since i just started with R, I have only little knowledge. Can someone help me by solving the problem? I have the following 'starting position': z = rnorm(1,0,1) y <- function(x,z){2*x - 1 + z} I am looking for

Re: [R] How to do a target value search analogous to Excel Solver

Works fine. Thanks for the quick reply!! -- View this message in context: http://r.789695.n4.nabble.com/How-to-do-a-target-value-search-analogous-to-Excel-Solver-tp3998347p3998729.html Sent from the R help mailing list archive at Nabble.com. __ R-help@

[R] Counting the loop-round of a "for"-loop

Dear all, i have daily stock prices for more than 10 years and want to compute annual volatilities for certain dates during this period. Since i have found no "easy" way to work with time data, the data presents itself in the structure TIme Index - Stock Price 1 - 15,6 2 - 17 ... ... 2010 - 28 2

Re: [R] Counting the loop-round of a "for"-loop

It seems to work. Simple and effective! Thanks! -- View this message in context: http://r.789695.n4.nabble.com/Counting-the-loop-round-of-a-for-loop-tp4381319p4381780.html Sent from the R help mailing list archive at Nabble.com. __ R-help@r-project.or

[R] Package "demography" - calculating quintiles of survival probabilities

Hi, I am using the package "demography" from Rob Hyndman for the Lee-Carter-Model. It is an amazing powerful tool but I am struggling with one issue: *I want to compute different quintiles for the cumulative survival probability derived from the Lee-Carter-Forecast (e.g. the 50%-quintile, 75%-

[R] Package "demography" - calculating percentiles of survival probabilities distribution

Hi, I am using the package "demography" from Rob Hyndman for the Lee-Carter-Model. It is an amazing powerful tool but I am struggling with one issue: I want to compute different percentiles of the survival probability distribution derived from the Lee-Carter-Forecast (e.g. the 50%tile, 60%tile, 7

Re: [R] Package "demography" - calculating percentiles of survival probabilities distribution

Hi David, thanks for your patience and your comment. Unfortunately, your code - if I understood it correctly - is still not what I am looking for. I try to describe an example as you suggested: I assume that the Lee-Carter-Forecast-Modell generates different sample paths or simulation runs, e.g.