C W
2015-Jan-30 01:43 UTC
[R] How to use curve() function without using x as the variable name inside expression?
Hi Rui, Thank you for your help. That works for now, but eventually, I need to be pass in x and y. Is there a way to tell the curve() function, x is a fix vector, mu is a variable! Thanks, Mike On Thu, Jan 29, 2015 at 5:25 PM, Rui Barradas <ruipbarradas at sapo.pt> wrote:> Hello, > > The following will work, but I don't know if it's what you want. func2 > will get x and y from the global environment. > > func2 <- function(mu){ > x + y + mu ^ 2 > } > > curve(func2, from = 0, to = 10) > > > Hope this helps, > > Rui Barradas > > Em 29-01-2015 21:02, C W escreveu: > >> Hi all, >> >> I want to graph a curve as a function of mu, not x. >> >> Here's the R code: >> >> x <- rnorm(10) >> y <- rnorm(10) >> >> func <- function(x, y, mu){ >> x + y + mu ^ 2 >> } >> >> curve(f = func(x = x, y = y, mu), from = 0, to = 10) >> I know I can change variable mu to x, but is there a way to tell R that mu >> is the variable of interest, not x. >> >> Thanks in advance, >> >> Mike >> >> [[alternative HTML version deleted]] >> >> ______________________________________________ >> R-help at 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]]
William Dunlap
2015-Jan-30 02:04 UTC
[R] How to use curve() function without using x as the variable name inside expression?
Does help(curve) talk about its 'xname' argument? Try curve(10*foofoo, from=0, to=17, xname="foofoo") You will have to modify your function, since curve() will call it once with a long vector for the independent variable and func(rnorm(10), rnorm(10), mu=seq(0,5,len=501)) won't work right. Bill Dunlap TIBCO Software wdunlap tibco.com On Thu, Jan 29, 2015 at 5:43 PM, C W <tmrsg11 at gmail.com> wrote:> Hi Rui, > > Thank you for your help. That works for now, but eventually, I need to be > pass in x and y. > > Is there a way to tell the curve() function, x is a fix vector, mu is a > variable! > > Thanks, > > Mike > > On Thu, Jan 29, 2015 at 5:25 PM, Rui Barradas <ruipbarradas at sapo.pt> > wrote: > > > Hello, > > > > The following will work, but I don't know if it's what you want. func2 > > will get x and y from the global environment. > > > > func2 <- function(mu){ > > x + y + mu ^ 2 > > } > > > > curve(func2, from = 0, to = 10) > > > > > > Hope this helps, > > > > Rui Barradas > > > > Em 29-01-2015 21:02, C W escreveu: > > > >> Hi all, > >> > >> I want to graph a curve as a function of mu, not x. > >> > >> Here's the R code: > >> > >> x <- rnorm(10) > >> y <- rnorm(10) > >> > >> func <- function(x, y, mu){ > >> x + y + mu ^ 2 > >> } > >> > >> curve(f = func(x = x, y = y, mu), from = 0, to = 10) > >> I know I can change variable mu to x, but is there a way to tell R that > mu > >> is the variable of interest, not x. > >> > >> Thanks in advance, > >> > >> Mike > >> > >> [[alternative HTML version deleted]] > >> > >> ______________________________________________ > >> R-help at 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 at 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]]
C W
2015-Jan-30 03:34 UTC
[R] How to use curve() function without using x as the variable name inside expression?
Hi Bill, You solved by problem. For some reason, I thought xname was only referring to name of the x-axis. I remember last time I fixed it, it was something about xname, couldn't get it right this time. Thanks! Saved me hours from frustration. Mike On Thu, Jan 29, 2015 at 9:04 PM, William Dunlap <wdunlap at tibco.com> wrote:> Does > help(curve) > talk about its 'xname' argument? > > Try > curve(10*foofoo, from=0, to=17, xname="foofoo") > > You will have to modify your function, since curve() will > call it once with a long vector for the independent variable > and func(rnorm(10), rnorm(10), mu=seq(0,5,len=501)) won't > work right. > > > Bill Dunlap > TIBCO Software > wdunlap tibco.com > > On Thu, Jan 29, 2015 at 5:43 PM, C W <tmrsg11 at gmail.com> wrote: > >> Hi Rui, >> >> Thank you for your help. That works for now, but eventually, I need to be >> pass in x and y. >> >> Is there a way to tell the curve() function, x is a fix vector, mu is a >> variable! >> >> Thanks, >> >> Mike >> >> On Thu, Jan 29, 2015 at 5:25 PM, Rui Barradas <ruipbarradas at sapo.pt> >> wrote: >> >> > Hello, >> > >> > The following will work, but I don't know if it's what you want. func2 >> > will get x and y from the global environment. >> > >> > func2 <- function(mu){ >> > x + y + mu ^ 2 >> > } >> > >> > curve(func2, from = 0, to = 10) >> > >> > >> > Hope this helps, >> > >> > Rui Barradas >> > >> > Em 29-01-2015 21:02, C W escreveu: >> > >> >> Hi all, >> >> >> >> I want to graph a curve as a function of mu, not x. >> >> >> >> Here's the R code: >> >> >> >> x <- rnorm(10) >> >> y <- rnorm(10) >> >> >> >> func <- function(x, y, mu){ >> >> x + y + mu ^ 2 >> >> } >> >> >> >> curve(f = func(x = x, y = y, mu), from = 0, to = 10) >> >> I know I can change variable mu to x, but is there a way to tell R >> that mu >> >> is the variable of interest, not x. >> >> >> >> Thanks in advance, >> >> >> >> Mike >> >> >> >> [[alternative HTML version deleted]] >> >> >> >> ______________________________________________ >> >> R-help at 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 at 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]]