...it's of course simply using the desired x in the predict function. in this case: predict(mod1,data.frame(press = x_tenth[1]).
it must have been a trivial syntax error, why this didn't work in the first place. kay -- View this message in context: http://n4.nabble.com/getting-CI-s-for-certain-y-of-nls-fitted-curve-tp1695025p1744909.html Sent from the R help mailing list archive at Nabble.com. ______________________________________________ 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.