[R] Bar Plot ggplot2 Filling bars with cross hatching

[Rolf Turner]

On 20/01/2009, at 1:46 PM, Duncan Murdoch wrote:

> On 19/01/2009 7:36 PM, stephen sefick wrote:
>> what is your suggestion for distinguishing between many bars without
>> color?  I have grown up in the time of standarized tests - good or  
>> bad
>> I never felt nauseous.
>
> Use gray levels or labels.  If "many" is bigger than 5, it's not going
> to be easy, whatever method you are using.

	I disagree.  Grey levels suck; labels are a kludge.  It is an issue
	for ``many'' == 2, for which crosshatching works perfectly.

		cheers,

			Rolf

> Duncan Murdoch
>
>>
>> Stephen
>>
>> On Mon, Jan 19, 2009 at 5:20 PM, Greg Snow <Greg.Snow at imail.org>  
>> wrote:
>>> I think the fact that the grid package does not support cross- 
>>> hatching is a feature not a bug (or deficiency), and I hope that  
>>> this is not "fixed".  Tufte's book (The Visual Display of  
>>> Quantitative Information) has a section on why cross-hatching  
>>> should be avoided (unless of course your goal is to induce nausea  
>>> in the observer rather than convey information).
>>>
>>> I would edit Hadley's statement below to say "fortunately there's  
>>> no way to do this in ggplot2".
>>>
>>> --
>>> 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 hadley wickham
>>>> Sent: Thursday, January 15, 2009 10:55 AM
>>>> To: stephen sefick
>>>> Cc: R-help
>>>> Subject: Re: [R] Bar Plot ggplot2 Filling bars with cross hatching
>>>>
>>>> Hi Stephen,
>>>>
>>>>> #I am putting a test together for an introductory biology class  
>>>>> and I
>>>>> would like to put different cross hatching inside of each bar  
>>>>> for the
>>>>> bar plot below
>>>> ggplot2 uses the grid package to do all the drawing, and currently
>>>> grid doesn't support cross-hatching, so unfortunately there's no  
>>>> way
>>>> to do this in ggplot2.
>>>>
>>>> Regards,
>>>>
>>>> Hadley
>>>>
>>>> --
>>>> http://had.co.nz/
>>>>
>>>> ______________________________________________
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>>>> PLEASE do read the posting guide http://www.R-project.org/posting-
>>>> guide.html
>>>> and provide commented, minimal, self-contained, reproducible code.
>>
>>
>>
>
> ______________________________________________
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