[R] Finding different hues for a mosaic plot compatible with grayscale printing

[Jim Lemon]

On 05/12/2010 07:34 PM, Simon Kiss wrote:
> I'm working with the following code below to generate a
> how do I set the h,c, and l values such that the significant, positive
> residuals appear different on a grayscale printer from significant
> grayscale residuals. The challenge as I see it is that one can only
> distinguish the positive and negative residuals with the hue/. Varying
> the chroma and the luminance only affect the distinctions between large
> and small and significant and non significant. But my positive and
> negative residuals are both large (absolutely) and significant, meaning
> that they will have the same chroma and luminosity, but different hues.
> I guess the key here is to find two separate hue values that appear
> substantially different *on a grayscale printer* at the same chroma and
> luminance. I have read through Zeileis et al. (2007, 2008) but can't
> quite find the answer there.
> I have also tried the Friendly shading to vary the line type, but I
> can't find line types that are different enough to communicate the
> difference between positive and negative residuals clearly.
>
> Your assistance is appreciated.
>
>  >mosaic(~educ+trade_off_scaled, shade=TRUE, main="Support For
> Environmental Protection At The Expense of Creating Jobs By Education",
> gp=shading_hcl(CST17$observed, CST17$expected, ASR17, df=6, h=c(260,0),
> c=c(100,0), l=c(90,0)), labeling_args=list(rot_labels=c(25,90,0,0),
> offset_labels=c(1,0,0,2), offset_varnames=c(2,0,0,4),
> set_varnames=c(trade_off_scaled="Protecting The Environment Is More
> Important Than Creating Jobs", educ="Level of Education")))
>
Hi Simon,
I thought that the symbolbox function might do something useful, but it 
required a bit of modification. The attached mod allows the user to fill 
a rectangle with symbols, which includes things like "+" and "-".

Jim

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