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POHow do I change the colour of an outline in a ggplot bubble plot?
 

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  1. POHow do I change the colour of an outline in a ggplot bubble plot?
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    <p>I am putting together a bubble chart in ggplot2, and want to change the outline of my bubbles (to comply with work's formatting guidelines). My problem is that I'm using colors to group variables, and I'm using a custom palette (again, for work). Ideally, I'd like to put black borders on the bubbles. </p> <p>Here's my data-frame:</p> <pre><code>mmur &lt;- structure(list(Medgrowth = c(-1.02232983588915, 3.01155115511551,-0.220617729642996, 1.96506550218342, 0.943970767356888, 0.810810810810807,0.0166694449074782, 0.21064457239153, 0.0876731544801004, 0.132216835610393,0.370644922164558,0.23378141437756, 1.27810650887574, 0.42301184433164,0.394880174291941, 0.54216172568924, 1.32690882134916, 0.499722376457527,-0.108885017421599), Medunemp = c(4.430550475, 2.5060469975,4.1239796475, 2.0585977455, 3.846659243, 3.1792594425, 4.0033450105,6.0882984255, 3.091889808,3.7462810695, 2.4038147815, 3.0065393475,2.3331894185, 4.9482480125, 2.0955470885, 1.616694725, 1.873037069,3.060170157, 3.0131425595), Empsize = c(324.2,270.6, 962.1,149, 962.4, 421.1, 1197.8, 777.8, 552.8, 234.8, 421.1, 203.2,915.7, 396.1, 685.9, 904.5, 1366.9, 215.4, 440.5), Eduratio = c(0.1,0.2, 0.1, 0.2, 0.1, 0.2, 0.1, 0.1, 0.1, 0.3, 0.3, 0.2, 0.5, 0.2,0.3, 0.6, 0.4, 0.2, 0.1), Names = structure(c(3L, 12L, 11L, 7L,5L, 19L, 17L, 1L, 18L, 10L, 8L, 16L, 14L, 2L, 15L, 6L, 9L, 4L,13L), .Label = c("Accom", "Admin","Agric", "Arts.", "Const","Educa", "Elect", "Finan", "Healt","Infor","Manuf","Minin","Other", "Profe", "Publi", "Renta", "Retai", "Trans", "Whole"), class = "factor"), colour1 = structure(c(6L, 5L, 6L, 5L, 6L,5L, 6L, 6L, 6L, 4L, 4L, 5L, 2L, 5L, 4L, 1L, 3L, 5L, 6L), .Label = c("#8C2D04","#CC4C02", "#EC7014", "#FE9929","#FEC44F", "#FEE391"), class = "factor")), .Names = c("Medgrowth","Medunemp", "Empsize", "Eduratio", "Names", "colour1"), row.names = c("Agric","Minin", "Manuf", "Elect", "Const", "Whole", "Retai", "Accom","Trans", "Infor", "Finan", "Renta", "Profe", "Admin", "Publi","Educa", "Healt", "Arts.", "Other"), class = "data.frame") </code></pre> <p>And here's my plot code:</p> <pre><code>bbubc1 &lt;- ggplot(mmur, aes(x = Medgrowth, y = Medunemp, size = Empsize, label = Names, colour = colour1)) + geom_point() + scale_size(range = c(5, sqrt(max(mmur$Empsize)/min(mmur$Empsize)*5^2)), name = "Employment in\n2012 (thousands)") + geom_text(size = 4, colour = "black", vjust = -1) + scale_colour_manual(values = levels(mmur$colour1), name = "Per cent with\ntertiary degree", label = c(60, 50, 40, 30, 20, 10)) + xlab("Median employment growth rate 2001 - 2012") + ylab("Median unemployment rate 2001 - 2012") + opts(axis.text.x=theme_text(angle=0, hjust=0, size = 16)) + opts(axis.text.y=theme_text(angle=0, hjust=0, size = 16)) + opts(axis.title.x=theme_text(size = 16)) + opts(legend.title = theme_text(size = 16)) + opts(axis.title.y=theme_text(size = 16, angle = 90)) + geom_vline(colour = I("grey")) + geom_hline(colour = I("grey")) + ylim(c(0,7)) </code></pre> <p>The plot is here: <img src="https://i.stack.imgur.com/qQAUC.png" alt="The plot I want to edit"></p>
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