ggplot colors and lines

[gaelleVF]

Is it possible to put a larger color scale in the graphics ? With this one even with not many person/year/germplasm it can be hard to distinguish the different tones.

[priviere]

cf http://www.cookbook-r.com/Graphs/Colors_%28ggplot2%29/#a-colorblind-friendly-palette

[priviere]

cf http://research.stowers-institute.org/efg/Report/UsingColorInR.pdf

[priviere]

It could be possible to add combinaison of colors and lines : for one color, two lines
example:
p1_GxE = ggplot(data = dataf, aes(x = environnement, y = temp, colour = germplasme, group = germplasme))
p1_GxE = p1_GxE + stat_summary(fun.y = mean, geom = "line", aes(linetype = germplasme), size = 1) + scale_linetype_manual(values=rep(c("solid", "dotted"), 6))
cbbPalette <- c("#000000", "#E69F00", "#009E73", "#0072B2", "#D55E00", "#CC79A7")
p1_GxE = p1_GxE + scale_color_manual(values=rep(cbbPalette, each = 2))