ggplot2 customizing a plot
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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