You're right - easily tested by just re-sizing the graphics box - sort of counter-intuitive until I remember the clue is in the name - this generates a CIRCLE, come what may...
Stuart From: Sarah Goslee [mailto:sarah.gos...@gmail.com] Sent: 19 July 2012 11:18 To: Stuart Leask Cc: r-help@r-project.org Subject: Re: [R] 'symbols' not plotting correct circle radii On Thursday, July 19, 2012, Stuart Leask wrote: (Oh, and yes I've tried setting 'inches=F', but I then get a circle correct on X axis, but too large on the Y axis.) We're back to "read the help." ?symbols explictly states that if inches=FALSE and the axis scales are different, then the x axis coordinates will be used. And if your axes are different, why would you expect a *circle* to fit both simultaneously? Perhaps instead you need plot.ellipse from the plotrix package. Sarah -----Original Message----- From: r-help-boun...@r-project.org<javascript:;> [mailto:r-help-boun...@r-project.org<javascript:;>] On Behalf Of Stuart Leask Sent: 18 July 2012 11:03 To: r-help@r-project.org<javascript:;> Subject: [R] 'symbols' not plotting correct circle radii Hi there. I have been plotting some circles using 'symbols', with radii representing my data, but the radii looked incorrect. It seems to happen with a single circle too: Symbols ( 0, 0, circles = 40, xlim = c(-40, 40), ylim= c(-40, 40)) If I put a ruler up to my monitor (technology!) to compare the radius with the axes, the circle isn't radius 40; it is closer to 15... I suspect there is a simple answer. -- Sarah Goslee http://www.stringpage.com http://www.sarahgoslee.com http://www.functionaldiversity.org This message and any attachment are intended solely for the addressee and may contain confidential information. If you have received this message in error, please send it back to me, and immediately delete it. Please do not use, copy or disclose the information contained in this message or in any attachment. Any views or opinions expressed by the author of this email do not necessarily reflect the views of the University of Nottingham. This message has been checked for viruses but the contents of an attachment may still contain software viruses which could damage your computer system: you are advised to perform your own checks. Email communications with the University of Nottingham may be monitored as permitted by UK legislation. [[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.
