測定点がある場所に単にラベルを付けるのではなく、x スケール ラベルの繰り返しでこのような問題が発生する理由がわかりません。さらに、凡例のラベルが機能しません。
FamIncome Ethnicity mean.bmi
1 1 1 28.54250
2 1 2 26.66300
3 1 3 26.62105
4 1 4 29.51396
5 1 5 25.66722
6 2 1 29.62404
7 2 2 28.08393
8 2 3 28.62215
9 2 4 28.97561
10 2 5 25.57714
11 3 1 29.52630
12 3 2 28.27235
13 3 3 29.67060
14 3 4 31.36768
15 3 5 26.13361
16 4 1 30.83368
17 4 2 30.80814
18 4 3 29.29594
19 4 4 29.18521
20 4 5 24.80550
21 5 1 29.76500
22 5 2 29.24404
23 5 3 28.89435
24 5 4 31.48172
25 5 5 28.02522
26 6 1 30.05087
27 6 2 29.88574
28 6 3 29.53793
29 6 4 30.97993
30 6 5 25.57857
31 7 1 30.31787
32 7 2 29.28055
33 7 3 28.50421
34 7 4 30.65427
35 7 5 26.66094
36 8 1 29.15000
37 8 2 29.02789
38 8 3 28.36507
39 8 4 33.51915
40 8 5 28.38263
41 9 1 28.17679
42 9 2 28.74731
43 9 3 28.06196
44 9 4 31.38483
45 9 5 26.96000
46 10 1 28.71633
47 10 2 33.44409
48 10 3 30.63048
49 10 4 30.22587
50 10 5 27.36375
51 14 1 30.78161
52 14 2 27.43575
53 14 3 28.96817
54 14 4 32.22378
55 14 5 25.62778
56 15 1 29.15982
57 15 2 27.42672
58 15 3 27.60567
59 15 4 30.05013
60 15 5 26.80271
以下のコード:
a <- ggplot(nh1, aes(x=FamIncome, y=mean.bmi)) + geom_line(aes(group=Ethnicity, colour = Ethnicity)) + geom_point()
a = a + labs(list(title="Average BMI versus Family Income", x = "Family Income", y = "Average BMI"))
a = a + scale_x_discrete(breaks=c("1","2","3","4","5","6","7","8","9","10","14","15"),
labels = c("0-4,999", "5K-9,999", "10K-14,999", "15K-19,999", "20K-24,999", "25K-34,999", "35K-44,999", "45K-54,999", "55K-64,999", "65K-74,999", "75K-100K", "Over 100K"))
a = a + theme(axis.text.x=element_text(angle=-90))
a = a + scale_colour_continuous(name = "Ethnicity",
breaks=c("5","4","3","2","1"),
labels=c("Other Race/Multi", "Black","White","Other Hispanic", "Mexican-American"))
a
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