Hi Cindy,Welcome to R-help. Have a look at the posting guidelines and their suggestion about a minimal example. What we need to help you is some sample data and a "minimal" amount of code that illustrates your problem. Someone may be able to guess the problem from your errror message but I'd not bet on it.
Have a look at http://adv-r.had.co.nz/Reproducibility.html for some excellent suggestions on how to do this. And please supply the data using the dput() command. It provides an exact copy of the data on your computer so we know we are working with exactly the same data you are. On Thursday, March 23, 2017 6:35 AM, Cindy Wang <cindylywan...@gmail.com> wrote: Dear All, I am trying to use the model, Program Evaluation in order to determine the economic impact of a policy change. While trying to run my own data on RStudio, using the codes from the paper "An R Package for the Panel Approach Method for Program Evaluation: Pampe" by Ainhoa Vega-Bayo, I keep encountering an error that reads: Error in leaps.setup(x, y, wt = weights, nbest = nbest, nvmax = nvmax, : y and x different lengths To be honest, I am very new to R so I am not familiar with how it works and what every thing means, so its been quite a challenge for me to overcome this error. The packages that I have installed are "Formula", "plm", "leaps" and "pampe". If anyone could provide some help and advice on how I could overcome this error, it would be greatly appreciated. I am happy to provide more information if needed. Regards, Cindy [[alternative HTML version deleted]] ______________________________________________ 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. [[alternative HTML version deleted]] ______________________________________________ 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.
