R ggplot2条形图在多列上 [英] R ggplot2 Bar Chart on Multiple Columns

问题描述

这似乎很简单，但是有些基本的内容我并没有在这里讲到.我有一个数据框，其中每个月的某些事件计数为列，每年的计数为行.像这样:

This seems so simple, but there is something fundamental I am not getting here. I have a dataframe with counts of some event per month as columns, per year as rows. Like this:

season  sep oct nov dec jan feb
2000    2   7   47  152 259 140
2001    1   5   88  236 251 145
2002    2   14  72  263 331 147
2003    5   6   71  207 290 242

首先，我想创建一个季节的条形图.例如，对于2000季节，条形图将每个月的值显示为垂直条(可怜的是，没有足够的代表点来张贴示例图像).我猜我需要以某种方式重塑数据吗?

First, I would like to create a bar chart for one season. For example, for the 2000 season, a bar chart showing the values for each month as a vertical bar (alas, not enough rep points to post an image of an example). I'm guessing I need to reshape my data in some way?

最终，我想创建一组多面包装的图表，每个季节一个.

Ultimately I would like to create a facet wrapped set of charts, one for each season.

请注意，我发现了一个类似的帖子，但是由于问题不清晰，该帖子过于复杂.

Please note I found a similar post, but the post was over complicated due to a lack of clarity on the question.

推荐答案

library(reshape2)
library(ggplot2)
df_m <- melt(df, id.vars = "season")

为了绘制一个季节(例如2000年)

In order to plot for one season (e.g. 2000)

ggplot(subset(df_m, season == "2001"), aes(x = variable, y = value)) +
geom_bar(stat = "identity")

对于面包装的一组图表，请尝试:

And for facet wrapped set of charts try:

ggplot(df_m, aes(x = variable, y = value)) + geom_bar(stat = "identity") +
facet_wrap(~season)

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