[R] stacked bar on single-color printing

[John]

Thanks Rui. That's very close to what I am looking for. You use gray scales
for different categories. That would be a great idea. Could we use pattern
fill?
Rui Barradas <ruipbarradas using sapo.pt> 於 2020年8月13日 週四 下午6:31寫道：

> Hello,
>
> Without sample data and the code you've tried it's difficult to say but
> are you looking for something like this?
>
>
> set.seed(2020)
> df1 <- expand.grid(X = factor(1:5), Y = LETTERS[1:2])
> df1 <- df1[sample(nrow(df1), 100, TRUE), ]
>
> library(ggplot2)
>
> tbl <- as.data.frame(table(df1))
>
> ggplot(tbl, aes(X, Freq, color = Y, fill = Y)) +
>    geom_col() +
>    scale_color_manual(values = c("black", "black")) +
>    scale_fill_manual(values = c("white", "gray70")) +
>    theme_bw()
>
>
> Hope this helps,
>
> Rui Barradas
>
> Às 10:05 de 13/08/20, John escreveu:
> > Hi,
> >
> >     I would like to create percentage stacked bar with graphics package
> > (e.g., ggplot2) and print it in white/black. The regular option is to use
> > different color on the bar. Is there any way to use different background
> on
> > a bar so that we can tell on a black/white printing? For example, let my
> > green correspond to ***, while my red correspond to ....
> >
> >     Thanks,
> >
> > J
> >
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> >
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>

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