如何用表格从R绘制小节? [英] How to make a barplot with R from a table?

问题描述

我在.cvs中有一些数据.我想用这个数据在R中创建一个简单的barplot，但是我在R中有点迷失了.

I have some data in .cvs. I would like to make a simple barplot in R, with this data, but I a little lost in R.

Specie   Number
A        18756
V        8608 
R        3350 
P        3312 
O        1627

我已经有了每个硬币的编号.我只想绘制结果? A，V，R，P，O是物种的名称.

I already have the number of each specie. I just want to plot the results? A, V, R, P, O are the names of the species.

我对首先要做的事情有些困惑?我必须将表格转换为矩阵吗?我必须在R中使用哪些命令?

I am a little confused of what I have to do first? Do I have to convert the table to a matrix? What commands do I have to use in R?

推荐答案

下面是一个简单的示例:

Here's a simple example:

y = data.frame(Specie=c('A','V','R','P','O'),Number=c(18756,8608,3350,3312,1627))
barplot(y$Number, names.arg=y$Specie)

您将使用read.csv(或其一个朋友)将文件从文件读入数据框.

You would use read.csv (or one of its friends) to read from a file into a Data Frame.

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