[英]How to plot an histogram in R with several variables?
i have to make an histogram in r with the following data: 我必须在r中使用以下数据制作直方图:
GDP: CONSTANT VALUES (2008=100)
**sector** **2003** **2004** **2005** **2006** **2007**
Agriculture 532918 543230 532043 562146 585812
Mining 1236807 1258769 1263937 1250930 1235517
Construction 1505948 1598346 1645017 1785796 1874591
Manufacturing 6836256 7098173 7302589 7731867 7844533
Wholesale 8635763 918174 966467 1037362 1070758
i know the rules and steps to make an histogram of a very simple data (with only one variable expressed in a single year) like this: 我知道制作非常简单的数据直方图(在一年中仅表示一个变量)的规则和步骤,如下所示:
age of members of group A in 2013
12 13 13 57 57 90 56 32 12 34
16 23 23 23 14 67 89 90 35 92
the problem is that i am very confused because the former it´sa time series and it contains several variables and it´s quantity in several years and i do not know how to make one histogram to graph all the data together. 问题是我非常困惑,因为前者是一个时间序列,其中包含多个变量,并且其数量在几年内,而且我不知道如何制作一个直方图来将所有数据一起绘制。
could you please help me? 请你帮助我好吗?
many thanks in advance. 提前谢谢了。
I assume you'd like something like that: 我想你想要这样的东西:
df <- read.table(text="sector 2003 2004 2005 2006 2007
Agriculture 532918 543230 532043 562146 585812
Mining 1236807 1258769 1263937 1250930 1235517
Construction 1505948 1598346 1645017 1785796 1874591
Manufacturing 6836256 7098173 7302589 7731867 7844533
Wholesale 8635763 918174 966467 1037362 1070758",h=T,strin=F)
library(ggplot2)
library(tidyr)
df2 <- gather(df,year,value,-sector)
ggplot(df2,aes(x=year,y=value,fill=sector)) + geom_bar(stat="sum")
Since the sectors are different, one might like to see the data within industry sectors organized by year. 由于行业不同,因此您可能希望查看按年份组织的行业内的数据。 One way to do this is as follows. 一种方法如下。
rawData <-
"sector Year2003 Year2004 Year2005 Year2006 Year2007
Agriculture 532918 543230 532043 562146 585812
Mining 1236807 1258769 1263937 1250930 1235517
Construction 1505948 1598346 1645017 1785796 1874591
Manufacturing 6836256 7098173 7302589 7731867 7844533
Wholesale 8635763 918174 966467 1037362 1070758"
library(reshape2)
gdpData <- read.table(textConnection(rawData),header=TRUE,
sep="",stringsAsFactors=TRUE)
gdpMelt <- melt(gdpData,id="sector",
measure.vars=c("Year2003","Year2004","Year2005","Year2006","Year2007"))
gdpMelt$year <- as.factor(substr(gdpMelt$variable,5,8))
library(ggplot2)
ggplot(gdpMelt, aes(sector, value, fill = year)) +
geom_bar(stat="identity", position = "dodge") +
scale_fill_brewer(palette = "Set1")
The resulting chart looks like this. 生成的图表如下所示。
regards, 问候,
Len 莱恩
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