First: > sessionInfo() R version 2.15.0 (2012-03-30) Platform: x86_64-pc-linux-gnu (64-bit)
locale: [1] LC_CTYPE=en_US.UTF-8 LC_NUMERIC=C [3] LC_TIME=en_US.UTF-8 LC_COLLATE=en_US.UTF-8 [5] LC_MONETARY=en_US.UTF-8 LC_MESSAGES=en_US.UTF-8 [7] LC_PAPER=C LC_NAME=C [9] LC_ADDRESS=C LC_TELEPHONE=C [11] LC_MEASUREMENT=en_US.UTF-8 LC_IDENTIFICATION=C attached base packages: [1] stats graphics grDevices utils datasets methods base other attached packages: [1] Ryacas_0.2-11 XML_3.9-4 pnmath_0.0-3 MASS_7.3-17 loaded via a namespace (and not attached): [1] compiler_2.15.0 fortunes_1.5-0 tools_2.15.0 > Operating system is debian (wheezy+some sid) I have installed yacas version 1.3.1 via synaptic. Then: library(Ryacas) > yacas(expression(Factor(x^2-1))) # copied from yacas help page [1] "Starting Yacas!" Accepting requests from port 9734 Error in socketConnection(host = "127.0.0.1", port = 9734, server = FALSE, : cannot open the connection In addition: Warning message: In socketConnection(host = "127.0.0.1", port = 9734, server = FALSE, : 127.0.0.1:9734 cannot be opened ¿Any ideas? Kjetil ______________________________________________ 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.