scale_color_manual vs scale_fill_manual
scale_fill_manual legend
scale color manual not workingscale_color_discrete change color
scale_color_manual continuous
scale fill manual order
scale_fill_manual drop levels
scale_linetype_manual

In the above example, we used the col argument within aes() in order to we want to use pp + scale_colour_manual( # Note that the colour order will A character vector that defines possible values of the scale and their order. A function that accepts the existing (automatic) values and returns new ones. scale_colour_manual: Create your own discrete scale. If unnamed, values will be matched in order (usually alphabetical, but could be modified with the For discrete scales, you can adjust the order of level appearance with breaks = scale_xxx_manual() (e.g. scale_colour_manual() or scale_fill_manual() ).ggplot(mpg, aes(x=cty, colour=drv)) + geom_density() + scale_colour_manual(values = c("4" = "lightblue", "f" = "yellow", "r" = "red")). If unnamed, values will be matched in order (usually alphabetical) with the limits of the scale. namestr. The name of the scale - used as the axis label or ggplot is arranging the MyCat variable in alphabetical order in order to avoid that, one needs to define that variable as a factor in the A character vector that defines possible values of the scale and their order. drop. Should unused factor levels be omitted from the scale?