Hi,
On Wed, Feb 20, 2013 at 9:33 AM, Alaios <alaios at yahoo.com>
wrote:> Dear all,
> I want some help improve my ggplot as following:
> Make the plottable area with grid, so is easy one to see where each box
refers to x and y values.
I don't think you can easily move the grid to the front, but you can
make the tiles transparent so the grid can be seen through them by
setting the alpha < 1.
> Add a color bar but with fixed values, that I want to specify.
use scale_fill_manual
> How I can do those two?
p<- ggplot(tdm, aes(x = Var2, y = Var1, fill = factor(value))) +
labs(x = "MHz", y = "Threshold", fill = "Duty
Cycle") +
geom_raster(alpha=.5) +
scale_fill_manual(values=c("red", "blue",
"green", "purple",
"orange", "pink", "tan", "violet",
"yellow"))
Best,
Ista
>
> Before is some code what I have tried so far.
>
> Regards
> Alex
>
>
>
DataToPlot<-matrix(data=seq(1:9),nrow=3,dimnames=list(seq(1,3),seq(4,6)))
>
>
> require(reshape)
> require(ggplot2)
> require(raster)
>
> tdm <- melt(DataToPlot)
>
>
>
> p<- ggplot(tdm, aes(x = Var2, y = Var1, fill = factor(value))) +
> labs(x = "MHz", y = "Threshold", fill =
"Duty Cycle") +
> geom_raster() +
> scale_fill_discrete()
>
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>
>
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