[英]How do I get exact font, line, point and figure sizes in ggplot2?
對於最終文章提交,我被要求更新我的數據,以便它們符合以下規范:
我嘗試過的:
library(ggplot2)
library(cowplot)
theme_set(theme_bw())
x <- rnorm(100)
mydata <- data.frame(x = x,
y = x^2 + runif(100),
z = rep(letters[1:4], 25))
p <- ggplot(data = mydata, aes(x, y)) +
geom_point(aes(color = z)) +
geom_smooth(color = 'black', se = FALSE, size = 0.5) +
theme(text = element_text(family = 'Times', size = 10, color = 'black'),
axis.ticks.length = unit(-0.1, 'cm'),
axis.text.x = element_text(margin = margin(t = 4, unit = 'mm')),
axis.text.y = element_text(margin = margin(r = 4, unit = 'mm')),
panel.grid = element_blank(),
axis.line = element_line(size = 0.25),
legend.position = c(0.5, 0.75))
p
ggsave(plot = p,
filename = 'myplot.png',
width = 80, height = 50, dpi = 300, units = 'mm')
p2 <- cowplot::plot_grid(plotlist = list(p, p, p, p), nrow = 1)
ggsave(plot = p2,
filename = 'mymultipleplot.png',
width = 169, height = 50, dpi = 300, units = 'mm')
返回以下兩個圖:
我可以弄清楚如何處理這里的一些問題(例如傳說位置),但我遇到以下困難:
ggsave
或毫米為單位)...... ggsave
是否有自己的縮放? 更新對於我目前的任務,我導出為svg文件並在Inkscape中進行編輯。 花了幾個小時,但比讓ggplot扭曲到規格更容易。
但是,知道將來如何在ggplot2中以編程方式執行此操作將會很有幫助。
回答問題:1)Henrik在評論中說:
對於問題1(如何在頂部和右側軸上打勾?),請參閱ggplot 2.2.0中scale_中的新sec.axis參數。 試試例如ggplot(mpg,aes(displ,hwy))+ geom_point()+ scale_x_continuous(sec.axis = dup_axis())+ scale_y_continuous(sec.axis = dup_axis())
2)這里的問題是你有不同大小的相同分辨率。 由於兩個數字的高度相同,您可以通過手動將字體大小與寬度的比率相乘來解決此問題:例如,
theme(text = element_text(family = 'Times', size = 10*(80/169), color = 'black')
整個代碼應如下所示:
library(ggplot2)
library(cowplot)
theme_set(theme_bw())
x <- rnorm(100)
mydata <- data.frame(x = x,
y = x^2 + runif(100),
z = rep(letters[1:4], 25))
p1 <- ggplot(data = mydata, aes(x, y)) +
geom_point(aes(color = z)) + scale_x_continuous(sec.axis = dup_axis()) +
scale_y_continuous(sec.axis = dup_axis()) +
geom_smooth(color = 'black', se = FALSE, size = 0.5) +
theme(text = element_text(family = 'Times', size = 10*(80/169), color = 'black'),
axis.ticks.length = unit(-0.1, 'cm'),
axis.text.x = element_text(margin = margin(t = 4, unit = 'mm')),
axis.text.y = element_text(margin = margin(r = 4, unit = 'mm')),
panel.grid = element_blank(),
axis.line = element_line(size = 0.25),
legend.position = c(0.5, 0.75))
p2 <- ggplot(data = mydata, aes(x, y)) +
geom_point(aes(color = z)) + scale_x_continuous(sec.axis = dup_axis()) +
scale_y_continuous(sec.axis = dup_axis()) +
geom_smooth(color = 'black', se = FALSE, size = 0.5) +
theme(text = element_text(family = 'Times', size = 10, color = 'black'),
axis.ticks.length = unit(-0.1, 'cm'),
axis.text.x = element_text(margin = margin(t = 4, unit = 'mm')),
axis.text.y = element_text(margin = margin(r = 4, unit = 'mm')),
panel.grid = element_blank(),
axis.line = element_line(size = 0.25),
legend.position = c(0.5, 0.75))
p1
ggsave(plot = p1,
filename = 'myplot.png',
width = 80, height = 50, dpi = 300, units = 'mm')
p2multi <- cowplot::plot_grid(plotlist = list(p2, p2, p2, p2), nrow = 1)
ggsave(plot = p2multi ,
filename = 'mymultipleplot.png',
width = 169, height = 50, dpi = 300, units = 'mm')
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