Re: [R] Colors on box plots in ggplot
> -Original Message-
> From: R-help [mailto:r-help-boun...@r-project.org] On Behalf Of David
> I'm trying to set different boxes to different colors the following page
> shows
> http://www.sthda.com/english/wiki/ggplot2-box-plot-quick-start-guide-r-
> software-and-data-visualization
>
>
> I've tried the code
> ToothGrowth$dose <- as.factor(ToothGrowth$dose)
> head(ToothGrowth)
> library(ggplot2)
> # Basic box plot
> p <- ggplot(ToothGrowth, aes(x=dose, y=len)) +
> geom_boxplot()
> p+scale_color_manual(values=c("#99", "#E69F00", "#56B4E9"))
> p
You have not mapped an aesthetic to colour, so the scale (which applies to an
aesthetic) is not being used at all.
Try
( p <- ggplot(ToothGrowth, aes(x=dose, y=len)) +
geom_boxplot(aes(colour=dose)) )
which uses default colours. Once you have an aes mapping you can change the
scale, so
( p + scale_colour_manual(values = c("red", "blue", "green")) )
gives you the colour ordering you want.
( p + scale_colour_manual(values = c("red", "blue", "green"), guide=FALSE) )
also removes the redundant colour key.
S Ellison
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Re: [R] Colors on box plots in ggplot
I see you creating a variable p, evaluating and printing a modified version of
that variable, and then printing that variable (presumably overwriting the
first plot). Are you executing your code one line at a time when
troubleshooting?
On January 17, 2019 2:32:51 PM PST, David Doyle wrote:
>Hello,
>
>I'm trying to set different boxes to different colors the following
>page
>shows
>http://www.sthda.com/english/wiki/ggplot2-box-plot-quick-start-guide-r-software-and-data-visualization
>
>
>I've tried the code
>ToothGrowth$dose <- as.factor(ToothGrowth$dose)
>head(ToothGrowth)
>library(ggplot2)
># Basic box plot
>p <- ggplot(ToothGrowth, aes(x=dose, y=len)) +
> geom_boxplot()
>p+scale_color_manual(values=c("#99", "#E69F00", "#56B4E9"))
>p
>
>But still can not get the colors to show up. I'm sure it is something
>simple I'm doing wrong and would appreciate help.
>
>Thank you in advance
>David
>
> [[alternative HTML version deleted]]
>
>__
>R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see
>https://stat.ethz.ch/mailman/listinfo/r-help
>PLEASE do read the posting guide
>http://www.R-project.org/posting-guide.html
>and provide commented, minimal, self-contained, reproducible code.
--
Sent from my phone. Please excuse my brevity.
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