data <- as.matrix(data.frame("A" = c(18,7),
"B+" = c(3,2),
"B" = c(3,3),
"C+" = c(6,0),
"C" = c(7,0),
"D" = c(0,4),
"E" = c(5,23)))
barplot (data,
col = c("red","blue"),
beside = TRUE,
xlab = "Grade",
ylab = "Frequency")
legend("topleft",
c("IFC6503-A","IFC6510"),
fill = c("red","blue"),
inset = c(.01,0)
)
我将两个条形图绘制在一起,条形图包含等级,来自两个不同的数据,等级由 A B+ B C+ CDE ,但结果 B+ 和 C+ 没有出现,只出现 B. 和 C. ,是我的代码错误或者你们能更正我的代码吗?
最佳答案
不要使用特殊字符 +
在伯恩哈德已经指出的列名中:
这是一种您可以手动重新标记绘图的 x 轴的方法:
xaxt = "n"
在条形图中删除 x 个标签axis
手动插入 x 个标签:data <- as.matrix(data.frame("A" = c(18,7),
"Bplus" = c(3,2),
"B" = c(3,3),
"Cplus" = c(6,0),
"C" = c(7,0),
"D" = c(0,4),
"E" = c(5,23)))
barplot (data,
col = c("red","blue"),
beside = TRUE,
xlab = "Grade",
ylab = "Frequency",
xaxt = "n")
axis(1, at = seq(2, 20, 3), labels = c("A", "B+", "B", "C+", "C", "D", "E"))
legend("topleft",
c("IFC6503-A","IFC6510"),
fill = c("red","blue"),
inset = c(.01,0)
)
关于r - 在 R 中绘制两个条形图,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/69232355/