Dear R-community, dear Jari Oksanen! I use metaMDS (package vegan) to calculate NMDS. In a lot of papers I read that it is recommended to use previous best solutions as a new starting configuration to get better results and to avoid local minima. On the help page I found that a previous.best-command is already implemented in metaMDS: metaMDS(comm, distance = "bray", ...,plot = FALSE, previous.best,...) But unfortunately I did not manage to use it properly. When I run metaMDS without command previous.best I certainly get a result. I run it again with command previous.best and I get this message: "Fehler in metaMDS(data... : object "previous.best" not found" My question: How can I save the best solution and use it in the next NMDS.
I also tried to type in the command: previous.best = TRUE Then I get the message: "Starting from a previous solution Fehler in s0$stress : $ operator is invalid for atomic vectors" Could you please help me? Thank you very much, Kim -- für nur 19,99 Euro/mtl.!* http://portal.gmx.net/de/go/dsl02 ______________________________________________ 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.
