这是问题所在:我正在使用ggplot制作一个x轴范围为-90到90度的图形。我已经成功使用了将度数符号添加到by scale_x_continuous创建的刻度标签中的功能。但是，当我使用theme()调整字体时，刻度标签不会变粗体。但是，更改字体大小是可行的。这是一个可重现的示例:
# function to add degree symbols
add_degree <- function(x) {
parse(text = paste(x, "*degree",sep = ""))
}
y<- c(0.00552243346007605, 0.00553155893536122, 0.005693536121673,
0.0054722433460076, 0.00562661596958175, 0.00546768060836502,
0.00561292775665399, 0.00550950570342205, 0.0056851711026616,
0.00551558935361217, 0.0055041825095057, 0.00556501901140684,
0.00552699619771863, 0.00552623574144487, 0.0055680608365019,
0.00567148288973384, 0.00550342205323194, 0.00553764258555133,
0.00538098859315589, 0.00573307984790875, 0.00564486692015209,
0.00561444866920152, 0.00556349809885932, 0.00571254752851711,
0.00544030418250951, 0.00557946768060837, 0.00546083650190114,
0.00549049429657795, 0.00557414448669202, 0.00553916349809886,
0.00551787072243346, 0.00557794676806084, 0.0055041825095057,
0.00552699619771863, 0.0056509505703422, 0.00544790874524715,
0.00555555555555556)
x <- seq(-90,90,by = 5)
dat <- data.frame(x,y)
ggplot(dat,aes(x = x, y = y))+
geom_line()+
scale_x_continuous(limits = c(-90,90), breaks = seq(-90,90, by = 15), labels = add_degree)+
theme_bw() +
theme(
# Adjust axis label and title font sizes below
axis.title = element_text(size=12, face= "bold"),
plot.title = element_text(size=12, face = "bold"),
# Adjust size of tick labels
axis.text.x = element_text(size=12, face = "bold"),
axis.text.y = element_text(size=12, face = "bold"),
panel.grid.major = element_blank(),
panel.grid.minor = element_blank(),
panel.border = element_blank(),
panel.background = element_blank(),
axis.line = element_line(colour = "black")
)
我已经尝试过调整上面的
parse函数，但是到目前为止还没有运气。我看过以下解决方案，但无法使其在ggplot中工作:How to make beta italic and bold in axis label and P italic and bold in text这是我对
sessionInfo()的输出:R version 3.2.2 (2015-08-14)
Platform: x86_64-pc-linux-gnu (64-bit)
Running under: Ubuntu 14.04.3 LTS
locale:
[1] LC_CTYPE=en_US.UTF-8 LC_NUMERIC=C LC_TIME=en_US.UTF-8 LC_COLLATE=en_US.UTF-8 LC_MONETARY=en_US.UTF-8
[6] LC_MESSAGES=en_US.UTF-8 LC_PAPER=en_US.UTF-8 LC_NAME=C LC_ADDRESS=C LC_TELEPHONE=C
[11] LC_MEASUREMENT=en_US.UTF-8 LC_IDENTIFICATION=C
attached base packages:
[1] stats graphics grDevices utils datasets methods base
other attached packages:
[1] reshape2_1.4.1 ggplot2_1.0.1 moments_0.14
loaded via a namespace (and not attached):
[1] Rcpp_0.12.0 digest_0.6.8 MASS_7.3-44 grid_3.2.2 plyr_1.8.3 gtable_0.1.2 magrittr_1.5 scales_0.2.5 stringi_0.5-5
[10] proto_0.3-10 labeling_0.3 tools_3.2.2 stringr_1.0.0 munsell_0.4.2 colorspace_1.2-6
P.s.我相信这与以下未回答的问题making y-axis labels bold in ggplot (x-axis is set bold but y-axis label doesn't change)非常相似(如果不相同)。
任何帮助将不胜感激!
最佳答案
我读了一条here注释，其中提到标签采用字符值。函数的输出是一个表达式。将add_degree()更改为以下内容将输出字符值而不是表达式，这似乎对我有用:
add_degree <- function(x) {
paste(x, "º",sep = "")
}
这是我的
sessionInfo()的输出R version 3.0.3 (2014-03-06)
Platform: x86_64-apple-darwin10.8.0 (64-bit)
locale:
[1] en_CA.UTF-8/en_CA.UTF-8/en_CA.UTF-8/C/en_CA.UTF-8/en_CA.UTF-8
attached base packages:
[1] stats graphics grDevices utils datasets methods
[7] base
other attached packages:
[1] ggplot2_1.0.0
loaded via a namespace (and not attached):
[1] colorspace_1.2-4 digest_0.6.4 grid_3.0.3
[4] gtable_0.1.2 labeling_0.2 MASS_7.3-31
[7] munsell_0.4.2 plyr_1.8.1 proto_0.3-10
[10] Rcpp_0.11.1 reshape2_1.4 scales_0.2.4
[13] stringr_0.6.2 tools_3.0.3
关于r - ggplot scale_x_continuous，符号为: make bold，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/32803727/