Re: [R] Help with expression()
On 10.10.2013 21:40, Sheri wrote: Hi everyone, I am hoping someone can help with my attempted use of the expression function. I have a long series of text and variable to paste together including a degree symbol. The text is to be placed on my scatter plot using the mtext function. Using expression like this: changetext = expression(paste(Change from ,mini, to , maxi, :, diff ,degree,C,collapse=)) does not evaluate my user defined variables - mini,maxi, and diff - just printing them out as words Using expression like this: changetext = paste(Change from ,mini, to , maxi, :, diff ,expression(degree,C),collapse=) prints the text twice and does not evaluate the degree symbol. I have tried to place the expression alone in a variable and then run the paste: degsym = expression(degree,C) changetext = paste(Change from ,mini, to , maxi, :, diff ,degsym,collapse=) giving me the same result as the second option Is there any way I can use the expression function as in the first example but still have R evaluate my user defined variables? Thanks! Sheri I'd rather use substitute for substitution of the symbols and get: plot(1, main = substitute(Change from * mini * to * maxi * : * diff * degree * C, list(mini=mini, maxi=maxi,diff=diff))) Best, Uwe Ligges __ 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.
Re: [R] Help with expression()
changetext = expression(paste(Change from ,mini, to , maxi, :, diff ,degree,C,collapse=)) does not evaluate my user defined variables - mini,maxi, and diff - just printing them out as words bquote() can do it: put the variables which should be evaluated in .(). E.g., mini - 13 maxi - 97 diff - maxi - mini plot(0, 0, main=bquote(Change from ~ .(mini) ~ to ~ .(maxi) * : ~ .(diff) ~ degree ~ C)) Bill Dunlap Spotfire, TIBCO Software wdunlap tibco.com -Original Message- From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] On Behalf Of Sheri O'Connor Sent: Thursday, October 10, 2013 1:08 PM To: R-help@r-project.org Subject: [R] Help with expression() Hi everyone, I am hoping someone can help with my attempted use of the expression function. I have a long series of text and variable to paste together including a degree symbol. The text is to be placed on my scatter plot using the mtext function. Using expression like this: changetext = expression(paste(Change from ,mini, to , maxi, :, diff ,degree,C,collapse=)) does not evaluate my user defined variables - mini,maxi, and diff - just printing them out as words Using expression like this: changetext = paste(Change from ,mini, to , maxi, :, diff ,expression(degree,C),collapse=) prints the text twice and does not evaluate the degree symbol. I have tried to place the expression alone in a variable and then run the paste: degsym = expression(degree,C) changetext = paste(Change from ,mini, to , maxi, :, diff ,degsym,collapse=) giving me the same result as the second option Is there any way I can use the expression function as in the first example but still have R evaluate my user defined variables? Thanks! Sheri --- Sheri O'Connor M.Sc Candidate Department of Biology Lakehead University - Thunder Bay/Orillia 500 University Avenue Orillia, ON L3V 0B9 __ 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. __ 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.
Re: [R] Help with expression()
Thanks very much! bquote() did the trick! on Thu, Oct 10, 2013 at 6:19 PM, William Dunlap wdun...@tibco.com wrote: changetext = expression(paste(Change from ,mini, to , maxi, :, diff ,degree,C,collapse=)) does not evaluate my user defined variables - mini,maxi, and diff - just printing them out as words bquote() can do it: put the variables which should be evaluated in .(). E.g., mini - 13 maxi - 97 diff - maxi - mini plot(0, 0, main=bquote(Change from ~ .(mini) ~ to ~ .(maxi) * : ~ .(diff) ~ degree ~ C)) Bill Dunlap Spotfire, TIBCO Software wdunlap tibco.com -Original Message- From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] On Behalf Of Sheri O'Connor Sent: Thursday, October 10, 2013 1:08 PM To: R-help@r-project.org Subject: [R] Help with expression() Hi everyone, I am hoping someone can help with my attempted use of the expression function. I have a long series of text and variable to paste together including a degree symbol. The text is to be placed on my scatter plot using the mtext function. Using expression like this: changetext = expression(paste(Change from ,mini, to , maxi, :, diff ,degree,C,collapse=)) does not evaluate my user defined variables - mini,maxi, and diff - just printing them out as words Using expression like this: changetext = paste(Change from ,mini, to , maxi, :, diff ,expression(degree,C),collapse=) prints the text twice and does not evaluate the degree symbol. I have tried to place the expression alone in a variable and then run the paste: degsym = expression(degree,C) changetext = paste(Change from ,mini, to , maxi, :, diff ,degsym,collapse=) giving me the same result as the second option Is there any way I can use the expression function as in the first example but still have R evaluate my user defined variables? Thanks! Sheri --- Sheri O'Connor M.Sc Candidate Department of Biology Lakehead University - Thunder Bay/Orillia 500 University Avenue Orillia, ON L3V 0B9 __ 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. __ 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.
Re: [R] help with expression
On Wed, Mar 14, 2012 at 8:56 AM, Thomas Hoffmann
hoffm...@giub.uni-bonn.de wrote:
Hi all,
I still fail to plot an axis title with the following expression:
plot(0,xlab=expression('(SOC [' * kgm^{-2} * '])' * ^{-2}))
the xlab should look like: (SOC [kgm^2])^0.25
with an out bracket and a superscript.
Like this ?
plot(0,xlab=expression(paste('(SOC[',kgm^-2,'])'^0.25,sep='')))
Thanks for your advice.
Thomas
[[alternative HTML version deleted]]
__
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.
__
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.
Re: [R] help with expression
On Mar 14, 2012, at 11:53 AM, ilai wrote:
On Wed, Mar 14, 2012 at 8:56 AM, Thomas Hoffmann
hoffm...@giub.uni-bonn.de wrote:
Hi all,
I still fail to plot an axis title with the following expression:
plot(0,xlab=expression('(SOC [' * kgm^{-2} * '])' * ^{-2}))
the xlab should look like: (SOC [kgm^2])^0.25
with an out bracket and a superscript.
Like this ?
plot(0,xlab=expression(paste('(SOC[',kgm^-2,'])'^0.25,sep='')))
If so, then this is more simple:
plot(0,xlab=expression('(SOC['*kgm^-2*'])'^0.25)) # using * as a
spaceless connector
And as far as I know, unlike the base R paste function, there is no
sep argument in the plotmath paste function. Look what happens with:
plot(0,xlab=expression(paste('(SOC[',kgm^-2,'])'^0.25,sep='#')))
# not used as a separator above, but rather is appended at end
And:
plot(0,xlab=expression(paste('(SOC[',kgm^-2,'])'^0.25))) # no default
space
--
David Winsemius, MD
West Hartford, CT
__
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.
Re: [R] Help with expression
On Tue, 25 Jan 2011, David Scott wrote: I have a problem with expressions. I am trying to create a title where the parameter of interest is displayed as a Greek character. Which parameter is being considered is stored in a character variable. As an example, if I have param - alpha param - as.name(alpha) HTH, Chuck and then do plot(0, 0, main = bquote(Parameter==.(param))) then in the title I get Parameter = alpha, whereas I want the Greek character alpha. David Scott -- _ David Scott Department of Statistics The University of Auckland, PB 92019 Auckland 1142,NEW ZEALAND Phone: +64 9 923 5055, or +64 9 373 7599 ext 85055 Email: d.sc...@auckland.ac.nz, Fax: +64 9 373 7018 Director of Consulting, Department of Statistics __ 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. Charles C. BerryDept of Family/Preventive Medicine cbe...@tajo.ucsd.eduUC San Diego http://famprevmed.ucsd.edu/faculty/cberry/ La Jolla, San Diego 92093-0901 __ 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.
Re: [R] Help with expression
Thanks. Exactly what I wanted. As usual, I played around with all sorts of things to try and get the expression right, but never thought of as.name. David Scott On 25/01/2011 4:32 a.m., Charles C. Berry wrote: On Tue, 25 Jan 2011, David Scott wrote: I have a problem with expressions. I am trying to create a title where the parameter of interest is displayed as a Greek character. Which parameter is being considered is stored in a character variable. As an example, if I have param- alpha param- as.name(alpha) HTH, Chuck and then do plot(0, 0, main = bquote(Parameter==.(param))) then in the title I get Parameter = alpha, whereas I want the Greek character alpha. David Scott -- _ David Scott Department of Statistics The University of Auckland, PB 92019 Auckland 1142,NEW ZEALAND Phone: +64 9 923 5055, or +64 9 373 7599 ext 85055 Email: d.sc...@auckland.ac.nz, Fax: +64 9 373 7018 Director of Consulting, Department of Statistics __ 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. Charles C. BerryDept of Family/Preventive Medicine cbe...@tajo.ucsd.eduUC San Diego http://famprevmed.ucsd.edu/faculty/cberry/ La Jolla, San Diego 92093-0901 -- _ David Scott Department of Statistics The University of Auckland, PB 92019 Auckland 1142,NEW ZEALAND Phone: +64 9 923 5055, or +64 9 373 7599 ext 85055 Email: d.sc...@auckland.ac.nz, Fax: +64 9 373 7018 Director of Consulting, Department of Statistics __ 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.
Re: [R] help in expression( )
On 02.06.2010 20:22, Shant Ch wrote: Hi, I was trying to have a graph whose axes are of the following type: X axis: n and Y axis: var[U ((a,b) in suffix, and (n,d) in the power)]. U ((a,b) in suffix, and (n,d) in the power)-U^(n,d) _ (a,b). Actually I require many plots involving different values of a,b,n,d, so need to keep this complicated notation. The code I used: plot(n, hn$h_pg, ylab=expression(Var(U[2%,%1]^(n%,%0))-Var(U[1%,%1]^(n%,%0))), xlab=n,type=l); plot(1, 1, ylab = expression(var(U[list(a,b)]^(list(n,d, xlab = n, type = l) or if you want to replace a, b, d, and n by values, use: a - 1 b - 2 d - 3 n - 4 plot(1, 1, ylab = substitute(var(U[list(a,b)]^(list(n,d))), list(a=a, b=b, d=d, n=n)), xlab = n, type = l) The expression() didn't work out for this case. Can anyone help me out. Also due to the size of the expression in the Y axis, I want to shift the graph in the R Graphics window, so that the Y labels are also fully visible. i don't know such command which will shift the whole graph a little in the Graphics window. Define other margins, see argument mar in ?par, e.g. par(mar=c(5,5,4,1)+.1) Uwe Ligges Thanks, in advance. Shant [[alternative HTML version deleted]] __ 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. __ 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.
Re: [R] help with expression()
All of it is an expression (see ?expression). Maybe you'd better explain what exactly you're trying to do or what you mean by standard format and usual way (this part depends very much on what you're used to). You can manipulate parts of this expression, say, like this: foo - expression(NA_character_, NA_character_, Null Effect, Pooled effect, NA_character_, NA_character_, NA_character_, NA_character_, NA_character_, paste(Het Contours , I^2, sep = ), 0.4, 0.41, 0.42, 0.45, NA_character_) foo[[11]] - 1 foo[10] - expression(cat(hello, ppl)) # note that foo[[10]] is a call, so you can manipulate it like the usual call objects are manipulated (i.e., the standard way :-). foo[10] is an expression, so you can manipulate it in another standard way. ... and you can convert it to a character vector or a list as.character(foo) as.list(foo) ... and you can `eval` the whole expression e.g. using sapply or lapply. sapply(foo, eval) # umm ... maybe not, because you refer to I there which is probably in your global # environment, so try sapply(foo, eval, envir=.GlobalEnv) KK On Mon, Aug 17, 2009 at 1:24 PM, deanj2k dl...@le.ac.uk wrote: Hello. I have a vector and within that vector is one expression. When I display this vector it comes up as expression(NA_character_, NA_character_, Null Effect, Pooled effect, NA_character_, NA_character_, NA_character_, NA_character_, NA_character_, paste(Het Contours , I^2, sep = ), 0.4, 0.41, 0.42, 0.45, NA_character_) Where the part in bold is the element which is an expression. How do I change this vector to a standard format what I can manipulate in the usual way? -- View this message in context: http://www.nabble.com/help-with-expression%28%29-tp25004374p25004374.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. [[alternative HTML version deleted]] __ 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.
Re: [R] help with expression()
On Mon, 17 Aug 2009 12:24:28 +0200, deanj2k dl...@le.ac.uk wrote: Hello. I have a vector and within that vector is one expression. When I display this vector it comes up as expression(NA_character_, NA_character_, Null Effect, Pooled effect, NA_character_, NA_character_, NA_character_, NA_character_, NA_character_, paste(Het Contours , I^2, sep = ), 0.4, 0.41, 0.42, 0.45, NA_character_) Where the part in bold is the element which is an expression. How do I change this vector to a standard format what I can manipulate in the usual way? Dude, I have no idea what kind of analysis you are mastering, but that kind of output does not smell good. Inside the expression you have a nested expression, so you have to iterate over. Here is a way to proceed: te - expression(NA_character_, NA_character_, Null Effect, Pooled effect, NA_character_, NA_character_, NA_character_, NA_character_, NA_character_, paste(Het Contours , I^2, sep = ), 0.4, 0.41, 0.42, 0.45, NA_character_) I - 3 tl - lapply(as.list(te), eval, envir=parent.frame()) str(tl) List of 15 $ : chr NA $ : chr NA $ : chr Null Effect $ : chr Pooled effect $ : chr NA $ : chr NA $ : chr NA $ : chr NA $ : chr NA $ : chr Het Contours 9 $ : num 0.4 $ : num 0.41 $ : num 0.42 $ : num 0.45 $ : chr NA or if you want unevaluated paste expression just: as.list(te) [[1]] [1] NA [[2]] [1] NA [[3]] [1] Null Effect [[4]] [1] Pooled effect [[5]] [1] NA [[6]] [1] NA [[7]] [1] NA [[8]] [1] NA [[9]] [1] NA [[10]] paste(Het Contours , I^2, sep = ) [[11]] [1] 0.4 [[12]] [1] 0.41 [[13]] [1] 0.42 [[14]] [1] 0.45 [[15]] [1] NA Vitalie. -- __ 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.
