Re: [R] Using metric units in plots
On Fri, 20-Jun-2008 at 01:08PM +0100, Gavin Simpson wrote:
|> But it is not too difficult to do this yourself:
|>
|> in2cm <- function(x) return(x * 2.54)
|>
|> cm2in <- function(x) return(x * 0.3937008)
|>
|> then use in2cm() or cm2in() depending on what you want to achieve. If
|> you want a margin of 4cm all round the plot:
|>
|> op <- par(mai = cm2in(rep(4, 4)))
For those watching their keystroke footprints, it's slightly less to
do this:
op <- par(mai = rep(4, 4)/2.54)
I personally find mm the most convenient unit so I typically set pdf
device widths and heights like this:
height = 265/25.4, width = 180/25.4
It would be nice to have an omm and mam as alternatives to omi and mai
respectively, but we have oodles of par settings already. Then
there's a lot of people who would prefer to use cm instead of mm, so
there'd have to be settings for those as well. Too much already.
I've resigned myself to typing a '/25.4' sequence after the number of
mm I'm thinking of, and that's not hard to do.
--
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___Patrick Connolly
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_( Y )_Middle minds discuss events
(:_~*~_:)Small minds discuss people
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Re: [R] Using metric units in plots
> And if you think inches are bad, check out "points". > Not to mention "pints" Cheers, -p -- O__ Peter Dalgaard Øster Farimagsgade 5, Entr.B c/ /'_ --- Dept. of Biostatistics PO Box 2099, 1014 Cph. K (*) \(*) -- University of Copenhagen Denmark Ph: (+45) 35327918 ~~ - ([EMAIL PROTECTED]) FAX: (+45) 35327907 __ 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] Using metric units in plots
On Fri, 2008-06-20 at 11:26 +0100, Prof Brian Ripley wrote: > ... > In base graphics there are a very few par()s that use inches (and I am > pretty sure that comes from the US unit as used in S, not the 'Imperial' > one -- see e.g. Wikipedia). But those are rarely used. > My recollection of the Imperial and US units was that inches were the same and only volumetric measures differed (despite the fact that the USA officially adopted decimal measures long ago but didn't get around to using them). Given the fairly rubbery definition of the inch, that coincidence was pretty surprising. And if you think inches are bad, check out "points". Jim __ 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] Using metric units in plots
On Fri, 2008-06-20 at 09:09 -0200, Alberto Monteiro wrote: > Philip Rhoades wrote: > > > > This is a bit confusing - as far as I can see, ALL the pars use > > inches? I understand the US effect but shouldn't Metric units be > > supported directly? > > > That's one of my complains, but it seems that this will take time. > I don't believe it would be too hard to implement metric parameters > in every function. But it is not too difficult to do this yourself: in2cm <- function(x) return(x * 2.54) cm2in <- function(x) return(x * 0.3937008) then use in2cm() or cm2in() depending on what you want to achieve. If you want a margin of 4cm all round the plot: op <- par(mai = cm2in(rep(4, 4))) plot(1:10) par(op) HTH G > > Maybe Humanity must lose a few more people in airplane crashes > or nuclear plant meltdowns before we ban those unscientific units > from use. > > Alberto Monteiro > > __ > 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. -- %~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~% Dr. Gavin Simpson [t] +44 (0)20 7679 0522 ECRC, UCL Geography, [f] +44 (0)20 7679 0565 Pearson Building, [e] gavin.simpsonATNOSPAMucl.ac.uk Gower Street, London [w] http://www.ucl.ac.uk/~ucfagls/ UK. WC1E 6BT. [w] http://www.freshwaters.org.uk %~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~% __ 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] Using metric units in plots
Philip Rhoades wrote: > > This is a bit confusing - as far as I can see, ALL the pars use > inches? I understand the US effect but shouldn't Metric units be > supported directly? > That's one of my complains, but it seems that this will take time. I don't believe it would be too hard to implement metric parameters in every function. Maybe Humanity must lose a few more people in airplane crashes or nuclear plant meltdowns before we ban those unscientific units from use. Alberto Monteiro __ 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] Using metric units in plots
On 20/06/2008 6:41 AM, Philip Rhoades wrote: Prof Brian Ripley, Prof Brian Ripley wrote: On Fri, 20 Jun 2008, Philip Rhoades wrote: People, It appears that one has to use Imperial measurements in plot parameters? I can't find any info on using metric units . . In package grid you can use several different units. When I search the R site for "grid" I get: "Package ‘grid’ was removed from the CRAN repository" That's because it became a base package. It's distributed with R, not as a separate package on CRAN. In base graphics there are a very few par()s that use inches (and I am pretty sure that comes from the US unit as used in S, not the 'Imperial' one -- see e.g. Wikipedia). But those are rarely used. This is a bit confusing - as far as I can see, ALL the pars use inches? I understand the US effect but shouldn't Metric units be supported directly? I believe only inches are used as physical units, but many of the par() values don't use physical units. There are lines, user coordinates, etc. And plot() makes almost no use of physical units. Duncan Murdoch Also most graphics devices are dimensioned in inches with resolutions in dpi. Function cm() might help you. Thanks, Phil. __ 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] Using metric units in plots
Prof Brian Ripley, Prof Brian Ripley wrote: On Fri, 20 Jun 2008, Philip Rhoades wrote: People, It appears that one has to use Imperial measurements in plot parameters? I can't find any info on using metric units . . In package grid you can use several different units. When I search the R site for "grid" I get: "Package ‘grid’ was removed from the CRAN repository" In base graphics there are a very few par()s that use inches (and I am pretty sure that comes from the US unit as used in S, not the 'Imperial' one -- see e.g. Wikipedia). But those are rarely used. This is a bit confusing - as far as I can see, ALL the pars use inches? I understand the US effect but shouldn't Metric units be supported directly? Also most graphics devices are dimensioned in inches with resolutions in dpi. Function cm() might help you. Thanks, Phil. -- Philip Rhoades Pricom Pty Limited (ACN 003 252 275 ABN 91 003 252 275) GPO Box 3411 Sydney NSW 2001 Australia E-mail: [EMAIL PROTECTED] __ 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] Using metric units in plots
On Fri, 20 Jun 2008, Philip Rhoades wrote: People, It appears that one has to use Imperial measurements in plot parameters? I can't find any info on using metric units . . In package grid you can use several different units. In base graphics there are a very few par()s that use inches (and I am pretty sure that comes from the US unit as used in S, not the 'Imperial' one -- see e.g. Wikipedia). But those are rarely used. Also most graphics devices are dimensioned in inches with resolutions in dpi. Function cm() might help you. Thanks, Phil. -- Philip Rhoades Pricom Pty Limited (ACN 003 252 275 ABN 91 003 252 275) GPO Box 3411 Sydney NSW 2001 Australia E-mail: [EMAIL PROTECTED] -- Brian D. Ripley, [EMAIL PROTECTED] Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/ University of Oxford, Tel: +44 1865 272861 (self) 1 South Parks Road, +44 1865 272866 (PA) Oxford OX1 3TG, UKFax: +44 1865 272595 __ 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] Using metric units in plots
People, It appears that one has to use Imperial measurements in plot parameters? I can't find any info on using metric units . . Thanks, Phil. -- Philip Rhoades Pricom Pty Limited (ACN 003 252 275 ABN 91 003 252 275) GPO Box 3411 Sydney NSW 2001 Australia E-mail: [EMAIL PROTECTED] __ 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.
