[R] lwd - Windows
Francisco J. Zagmutt
gerifalte28 at hotmail.com
Wed Apr 26 16:56:51 CEST 2006
Dear Prof Brian Ripley
Thanks for replying to my question. I am sorry but it is still not clear to
me if there is a way to handle an "intermediate" line width. In my windows
system when I create a figure with 4 plots par(mfrow=c(2,2),lwd=1) the lines
look a bit too thin and using lwd=2 makes them look a bit too thick, and if
I use 1.5 it makes no difference. i.e
par(mfrow=c(2,2))
plot(sin,lwd=1)#Too thin
plot(sin,lwd=1.5)#Same as lwd=1
plot(sin,lwd=1.99)#Same as lwd=1
plot(sin,lwd=2)#Too thick
Regards
Francisco
>From: Prof Brian Ripley <ripley at stats.ox.ac.uk>
>To: "Francisco J. Zagmutt" <gerifalte28 at hotmail.com>
>CC: R-help at stat.math.ethz.ch
>Subject: Re: [R] lwd - Windows
>Date: Wed, 26 Apr 2006 11:34:05 +0100 (BST)
>
>On Wed, 26 Apr 2006, Francisco J. Zagmutt wrote:
>
>>Dear all
>>
>>Is there a way or trick in windows to plot a line width that is not an
>>integer i.e 1.5?
>>I am aware that the documentation for window devices states "Line widths
>>as
>>controlled by par(lwd=) are in multiples of the pixel size, and multiples
>><
>>1 are silently converted to 1" but I was wondering if there is a
>>workaround
>>this.
>
>That's not what it says in R 2.3.0 (nor in my copy of 2.2.1)! ?windows
>says
>
> Line widths as controlled by 'par(lwd=)' are in multiples of
> 1/96inch. Multiples less than 1 are allowed, down to one pixel
> width.
>
>>Also, IMHO the documentation for lwd in par may need some clarification
>>since it states:
>>"The line width, a positive number, defaulting to 1. The interpretation is
>>device-specific, and some devices do not implement line widths less than
>>one." Perhaps it would be useful for the users to describe the behavior
>>for
>>the most important devices, and also to state that the number is an
>>integer
>>(at least for windows) and not just a positive number?
>
>False premise. Please don't ask for the documentation to be changed to
>your personal misreading of it.
>
>--
>Brian D. Ripley, ripley at stats.ox.ac.uk
>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, UK Fax: +44 1865 272595
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