[R] hatching posibility in Panel.Polygon

[Greg Snow]

Tufte discusses hash lines in his book "The Visual Display of Quantitative Information" and does a better job of it than I can.  The short version is that the hashing can actually produce optical illusion effects that distort the information.  (and often don't copy well either).

Printing and copying are good things to think about in generating graphs, but I think that using shades of gray, or no fill with labels, or other options are still much preferable to hashing.  Consider making multiple simple graphs rather than one all inclusive complicated graph.

-- 
Gregory (Greg) L. Snow Ph.D.
Statistical Data Center
Intermountain Healthcare
greg.snow at imail.org
801.408.8111


> -----Original Message-----
> From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-
> project.org] On Behalf Of HC
> Sent: Tuesday, July 27, 2010 10:11 PM
> To: r-help at r-project.org
> Subject: Re: [R] hatching posibility in Panel.Polygon
> 
> 
> Thank you for your follow up on this matter.
> 
> I did think about the "partial transparent color" option and will
> certainly
> use it and see how it works out. For presentations and color prints,
> the
> partial transparency is surely going to work and may even look nicer.
> But
> for black and white printing for journal articles or making zerox
> copies,
> hatching seems more effective. And that was the reason of my exploring
> it.
> 
> There may be some valid reason to be "disappointed" if such option is
> made
> available. However, such an option will only add more power to the
> trellis
> graphics that already very useful, attractive and efficient.
> 
> Regards.
> HC
> 
> 
> 
> --
> View this message in context: http://r.789695.n4.nabble.com/hatching-
> posibility-in-Panel-Polygon-tp2301863p2304414.html
> Sent from the R help mailing list archive at Nabble.com.
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