如何用ggplot创建并排的条形图（用于多个系列）？ [英] How to create side-by-side bar charts (for multiple series) with ggplot?

问题描述

我有两组数据（3列：x =分类，y =数字，l =位置），我想创建一个条形图，其中包含x轴上的类别，对于每个类别的值，两个垂直条，颜色不同，每个位置的y值。默认情况下，Excel / OpenOffice生成这种图表。

我试过了

  qplot（x，y，data = mydata，col = location，geom =直方图）
  

但它会产生堆叠的酒吧，而不是并排。然后我查看了ggplot2文档，没有发现任何其他可以使用的geom（见下面的完整列表）。

ggplot2不可能这样做吗？

$ b

 名称说明
 abline  - 行，由斜率和截距指定
区域 - 面积图
 bar  - 酒吧，以y轴为基准的矩形
空白 - 空白，不绘制
 boxplot  - 盒须plot 
 contour  - 在2d 
横杆上显示3d曲面的轮廓 - 由水平线表示的中间的空心条
 density  - 显示平滑密度估计值
 density_2d  - 来自2d的轮廓线密度估计
误差线 - 误差线
直方图 - 直方图
线 - 水平线，
间隔 - 所有间隔（范围）几何基数
抖动 - 点抖动减少重叠绘图
 line  - 按x值的顺序连接观察值
 linerange  - 由垂直线表示的区间
 path  - 连接观察点按原始顺序排列
点 - 点与散点图
点间距 - 用垂直线表示的间隔，中间
多边形中的点
  - 多边形，a填充路径
分位数 - 从分位数回归中添加分位数线
功能区 - 色带，y连续x值的范围
 rug  - 边际地毯块
段 - 单线段
平滑 - 添加平滑条件意味着
步骤 - 通过楼梯连接观察值
 text  - 文本注释
 tile  - 尽可能密集的平铺图，假定每个图块的大小相同
 vline  - 行，垂直
  

解决方案

c $ c> position 这里默认为 stack 的参数。使用：

  qplot（x，y，data = mydata，col = location，geom =bar，position =dodge ）
  

在手册中，只需搜索闪避即可。此外，如果 y 值给出了栏的高度，那么您可能需要一个栏几何。

I have two sets of data (3 columns: x=categorical, y = numerical, l = location) and I would like to create a bar chart with the categories on the x axis and, for each value of the category, two vertical bars, coloured differently, with the y values for each location. By the default, Excel/OpenOffice produce this kind of chart.

I tried

qplot (x,y,data=mydata,col=location, geom="histogram")

but it produces stacked bars, not side by side. I then looked in the ggplot2 documentation and didn't find any other geom I could use (see below for full list).

Is this not possible with ggplot2?

Thanks in advance.

Name Description
abline - Line, specified by slope and intercept
area - Area plots
bar - Bars, rectangles with bases on y-axis
blank - Blank, draws nothing
boxplot - Box-and-whisker plot
contour - Display contours of a 3d surface in 2d
crossbar - Hollow bar with middle indicated by horizontal line
density - Display a smooth density estimate
density_2d - Contours from a 2d density estimate
errorbar - Error bars
histogram - Histogram
hline - Line, horizontal
interval - Base for all interval (range) geoms
jitter - Points, jittered to reduce overplotting
line - Connect observations, in order of x value
linerange - An interval represented by a vertical line
path - Connect observations, in original order
point - Points, as for a scatterplot
pointrange - An interval represented by a vertical line, with a point
in the middle
polygon - Polygon, a filled path
quantile - Add quantile lines from a quantile regression
ribbon - Ribbons, y range with continuous x values
rug - Marginal rug plots
segment - Single line segments
smooth - Add a smoothed condition mean
step - Connect observations by stairs
text - Textual annotations
tile - Tile plot as densely as possible, assuming that every tile is the same size
vline - Line, vertical

解决方案

There is a position argument that defaults to stack here. Use:

qplot (x,y,data=mydata,col=location, geom="bar", position="dodge") 

It is in the manual, just search for "dodge". Also, you probably want a "bar" geom if the y values give the height of the bar.

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