英文:
Side by side barplots in r
问题
我有一个看起来像这样的数据集
我想创建并列的柱状图，以显示两个等级之间的差异，我构想的是这样的
任何帮助都将不胜感激。
英文:
I have a data set that looks like this
I want to create side by side barplots that will show the differences between the two grades, I envisioned something like this
Any help would be highly appreciated.
答案1
得分: 1
在基本的R中，您可以使用barplot通过一系列的par(new = TRUE)和ifelse逻辑来迭代地叠加值。您可以使用类似的逻辑使用text来添加文本：
par(mfrow = c(1,2)) # 并排绘图# 左侧图barplot(df$Grade_Semester1, names.arg = df$Person, horiz = TRUE, col = "grey", xlim = c(0, 10))# 右侧图barplot(ifelse(df$Difference < 0, df$Grade_Semester1, 0),names.arg = df$Person, horiz = TRUE, col = "red", xlim = c(0, 10))par(new = TRUE)barplot(ifelse(df$Difference > 0, df$Grade_Semester2, 0),names.arg = df$Person, horiz = TRUE, col = "green", xlim = c(0, 10))par(new = TRUE)xx <- barplot(pmin(df$Grade_Semester1, df$Grade_Semester2),names.arg = df$Person, horiz = TRUE, col = "grey", xlim = c(0, 10))text(pmin(df$Grade_Semester1, df$Grade_Semester2) + abs(pmin(df$Difference)/2),xx, ifelse(df$Difference == 0, "", ifelse(df$Difference > 0, paste0("+", df$Difference), df$Difference)))
数据：
df <- data.frame(Person = c("A", "B", "C"),Grade_Semester1 = c(9, 10, 8),Grade_Semester2 = c(7, 10, 10),Difference = c(-2, 0, 2))
英文:
In base R, you can use barplot to iteratively lay over the values through a series of par(new = TRUE) and ifelse logic. You can add the text with similar logic using text:
par(mfrow = c(1,2)) #side by side plot# left plotbarplot(df$Grade_Semester1, names.arg = df$Person, horiz = TRUE, col = "grey", xlim = c(0, 10))# right plotbarplot(ifelse(df$Difference < 0, df$Grade_Semester1, 0),names.arg = df$Person, horiz = TRUE, col = "red", xlim = c(0, 10))par(new = TRUE)barplot(ifelse(df$Difference > 0, df$Grade_Semester2, 0),names.arg = df$Person, horiz = TRUE, col = "green", xlim = c(0, 10))par(new = TRUE)xx <- barplot(pmin(df$Grade_Semester1, df$Grade_Semester2),names.arg = df$Person, horiz = TRUE, col = "grey", xlim = c(0, 10))text(pmin(df$Grade_Semester1, df$Grade_Semester2) + abs(pmin(df$Difference)/2),xx, ifelse(df$Difference == 0, "", ifelse(df$Difference > 0, paste0("+", df$Difference), df$Difference)))
Data
df <- data.frame(Person = c("A", "B", "C"),Grade_Semester1 = c(9, 10, 8),Grade_Semester2 = c(7, 10, 10),Difference = c(-2, 0, 2))
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