如何在 barplot() 中将条形名称的标签设置为较小的字体？

Question

在下面使用 barplot() 函数：

barplot(
norm_clade_counts[[tax_level]][ok,all],
col = mycols(length(ok)),
las = 2,
names.arg = paste(sample_type[all], sample_name[all])
)

legend(
"bottomleft", bty = "n", pch = 19,
col = mycols(length(ok))[1:length(ok)],
cex = 1, inset = c(1,0), 
legend = rownames(clade_counts[[tax_level]])[ok]
)

我得到的条形图看起来像这样，其中条的名称在 window 中不完全可见。如何更改这些标签的字体大小？

Answer 1

您可以通过修改 mar（边距）图形参数来增加底部边距。

# What are the margins currently?
# The `mar` graphical parameter has the form c(bottom, left, top, right)
# These are the number of (fractional) lines on each side of the plot.
default_margins <- par("mar")
default_margins
#> [1] 5.1 4.1 4.1 2.1

# Make the bottom margin larger
new_margins <- default_margins + c(4, 0, 0, 0)
par(mar = new_margins)

barplot(GNP ~ Year, data = longley, las = 2, xlab = "", ylab = "")

# Reset the margins
par(mar = default_margins)

^{由 reprex package (v2.0.1)}

创建于 2022-03-09

如何在 barplot() 中将条形名称的标签设置为较小的字体？

How make labels for bar names a smaller font size in barplot()?

r

bar-chart