Quoting "Shengxi David Wu" &lt;dswu(a)stanford.edu&gt;du>: Hello Shengxi, The command you mentioned dta <- dataobj() does not work any longer, and we are updating the documentation. However you can see an example of dataobj.Rdata inside the data/ directory, even if it does not show in the library. You can just get it from the package and use the load command as I show you here. Try just to use the load command in the directory where dataobj.Rdata resides. Hope this helps let me know if any more issues. library(YourCast) Loading required package: sma data(package="YourCast") Data sets in package ~YourCast~: adjacency Country Similarity-Levels allc All causes of death brst Breast cancer cerv Cervical cancer cntry.codes Country codes and names dgst Digestive disease fat Covariate fat gdp Covariate gross domestic product hc Covariate human capital lung Lung cancer population World Population rspi Respiratory disease suic Suicide tobacco Covariate tobacco consumption trns Death cause by transportation accidents data(allc) ls() [1] "allc" allc[1:10, ] allc csid strata 1 NA 5150001920 2 2 NA 5150001921 2 3 NA 5150001922 2 4 NA 5150001923 2 5 NA 5150001924 2 6 NA 5150001925 2 7 NA 5150001926 2 8 NA 5150001927 2 9 NA 5150001928 2 10 NA 5150001929 2 setwd("/nfs/home/E/evillalo/cvswork/yourcast/yourcast/YourCast/data") getwd() [1] "/nfs/home/E/evillalo/cvswork/yourcast/yourcast/YourCast/data" dir(".") [1] "245045" "418050" "428025" [4] "adjacency.txt" "allc.txt" "brst.txt" [7] "cerv.txt" "cntry.codes.txt" "CVS" [10] "dataobj.Rdata" "dgst.txt" "fat.txt" [13] "gdp.txt" "hc.txt" "lung.txt" [16] "population.txt" "prior_brst_s3.Rdata" "rspi.txt" [19] "suic.txt" "tobacco.txt" "trns.txt" dta <- load("dataobj.Rdata") dta [1] "dataobj" names(dataobj) [1] "data" "index.code" "proximity" "G.names" In addition you can run some of the demos as (see the demo directory) demo(chp.2.7) When you run the demo then after you use ls() you will see that you have dataobj in your R working space, because every time we run a demo we put the corresponding dataobj in the working environment. All the demos should be run as demo(chp.#.#) where the two # referred to the chapter and figure (see the demo directory to see which chapter and figures to run). Hope this help, let me know if you have questions Elena -- yourcast mailing list served by Harvard-MIT Data Center List Address: yourcast(a)lists.gking.harvard.edu Subscribe/Unsubscribe: http://lists.gking.harvard.edu/?info=yourcast