在 pandas 折线图中绘制多个列

问题描述：

我正在尝试在折线图中绘制多个列，其中月"作为X轴，每个计数"作为新线.我希望它有5行，"Count-18..Count-14".我尝试绘制1条线作为测试，但是当我运行以下代码时，我得到了以下没有图形的输出.有什么想法吗?

I am trying to plot a multiple columns in a line graph with 'Month' as the X axis and each 'Count' as a new line. I want it to have 5 lines, 'Count-18..Count-14'. I tried plotting 1 line as a test but when I run the following code I get the following output with no graph. Any ideas?

ax = plt.gca()

DomReg1418.plot(kind='line',x='Month',y='Count-18',ax=ax)

答

当您有一个带有一列的DataFrame用作X轴时和其他作为绘制线条的来源，您应该:

When you have a DataFrame with one column to be used as X axis and other as a source of lines to draw, you should:

将索引设置为"X"列(在您的情况下为 Month )，
运行情节，
以分号终止命令，以阻止文本消息关于图片对象.

执行此操作的代码是:

DomReg1418.set_index('Month').plot();

为了进行测试，在开始的6个月中，我输入了 X 和3个 Count 列并执行了上面的命令，得到以下结果:

For the test, I entered X and 3 Count columns, for first 6 months and executed the above command, getting the following result:

在 pandas 折线图中绘制多个列

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