我在ggplot2中整理了一个气泡图,并希望改变我的气泡轮廓(以符合工作的格式指南).我的问题是我使用颜色来组合变量,而我正在使用自定义调色板(再次,用于工作).理想情况下,我想在气泡上加上黑色边框.
这是我的数据框架:
mmur <- 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, …