[R] ggplot2 histogramm

[Christian Schulz]

Hi Dennis,

the BaseTheme() are some settings scale the text and title etc. , the 
plot should work without that. At present i'm experiment with  the huge 
amount of possibilities and try to understand and maybe doing beginner 
mistakes.

Thanks for the hint with scale_fill_gradient and specialized mailing list.

Regards ,
Christian


> Hi:
>
> I have to admit, there are several things about your call I don't 
> understand. First of all,
> you're really constructing bar charts by group, not histograms. 
> Secondly, you don't want
> legend.text, but legend.title; unfortunately, that doesn't work (for 
> reasons I don't understand),
> so I put in a workaround with scale_fill_gradient(). Thirdly, I 
> couldn't find a function called
> BaseTheme() in ggplot2; is this in package ggExtra?
>
> I got some errors when running your code. The first one had to do with 
> BaseTheme (not found).
> When I got rid of that, there was the following (in my modified code):
> > p + geom_bar(aes(y= ..count.. / 
> sum(..count..),fill=..count../sum(..count..)*100)) +
> +     scale_y_continuous("Anteil in %", formatter = "percent") +
> +     facet_wrap(~ group) + xlab("Attribute") +
> +     opts(title="Title")
> > last_plot() + opts(legend.title = "Antiel in Prozent")
> Error in el(...) : unused argument(s) (x = 0, y = 0.5)
>
> (It happened in yours, too.) I got the following to work; I think it's 
> what you want, but let
> me know if I'm off.
>
> p + geom_bar(aes(y= ..count.. / 
> sum(..count..),fill=..count../sum(..count..)*100)) +
>     scale_y_continuous("Anteil in %", formatter = "percent") +
>     scale_fill_gradient("Antiel in Prozent", limits = c(0, 50)) +
>     facet_wrap(~ group) + xlab("Attribute") +
>     opts(title="Title")
>
> HTH,
> Dennis
>
> PS: Questions about ggplot2 are better directed to its mailing list: 
> ggplot2 at googlegroups.com <mailto:ggplot2 at googlegroups.com>
>
>
>
> On Mon, Jan 18, 2010 at 4:34 AM, Christian Schulz <chschulz at email.de 
> <mailto:chschulz at email.de>> wrote:
>
>     Hi,
>
>     i get no success change the title of the "fill" (colour) legend
>     and the defintion of "levels". Have anybody a hint how i can do this.
>
>     df <-
>     data.frame(variable=sample(c("A","B","C"),1000,replace=T,prob=c(0.22,0.28,0.5)),group=gl(2,500))
>     p <- ggplot(df, aes(x = variable))
>     p + geom_histogram(aes(y= ..count.. /
>     sum(..count..),fill=..count../sum(..count..)*100))  +
>     scale_y_continuous(formatter = "percent") + facet_wrap(~group)  +
>     ylab("Anteil in %") +  xlab("Attribute") +
>     opts(title="Title",legend.text="Anteil in Prozent") +
>     BaseTheme(base_size=12)
>
>     many thanks,
>     Christian
>
>
>     ______________________________________________
>     R-help at r-project.org <mailto:R-help at r-project.org> mailing list
>     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.
>
>