r - ggplot column chart - order of colours in brewer object has no effect -

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i trying change colours on ggplot column chart. after googling, thought following code work:

require(ggplot2) require(rcolorbrewer) state <- c(rep("nswtc",5), rep("tcv",5), rep("qtc",5),             rep("watc",5), rep("safa",5), rep("other",5))  year  <- rep(c("11-12","12-13","13-14","14-15","15-16"),6)  ##some random data funding.programme <- abs(rnorm(30))  df <- data.frame(state, year, funding.programme)  ##this line makes graph in order inputted it, rather alphabetical df$state <- factor(df$state, levels=unique(df$state))  ##ugly coloured bars <- ggplot(df) +              aes(x=year ,y=funding.programme, fill=year) +              geom_bar(stat='identity') +              facet_grid(facets=~state) +              scale_y_continuous('gross issuance requirements')  ##nicely coloured blues <- brewer.pal(5, "blues") blues <- rev(blues) ##the following 2 graphs have same colours bars <- ggplot(df) +              aes(x=year ,y=funding.programme, fill=year) +              geom_bar(stat='identity') +              facet_grid(facets=~state) +              scale_y_continuous('gross issuance requirements') +              scale_fill_brewer(blues) bars bars <- ggplot(df) +              aes(x=year ,y=funding.programme, fill=year) +              geom_bar(stat='identity') +              facet_grid(facets=~state) +              scale_y_continuous('gross issuance requirements') +              scale_fill_brewer(blues.rev) bars  ##and not adjust default colours bars <- ggplot(df)+              aes(x=year,y=funding.programme, fill=year) +              geom_bar(stat='identity') +              facet_grid(facets=~state) +              scale_y_continuous('gross issuance requirements') +              scale_colour_manual(values = blues.rev) bars

but last method not work, , second , third-last charts produced identical, despite order of colours being reversed in object.

you want scale_fill_manual(values = blues) or conversely blues.rev (which didn't create in example code, assume typo).

only use scale_*_brewer when you're selecting 1 of default palette's name. otherwise, use scale_*_manual sort of thing.

the last 1 doesn't work because using colour instead of fill.

finally, carriage returns , tabs: love them, cherish them, use them!


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