使垂直网格线出现在matplotlib中的线图中 [英] Getting vertical gridlines to appear in line plot in matplotlib

问题描述

我想在绘图上同时获得水平和垂直网格线，但是默认情况下只显示水平网格线.我正在使用python中的sql查询中的pandas.DataFrame来生成在x轴上具有日期的折线图.我不确定为什么它们没有出现在日期上，我试图寻找答案，但是找不到答案.

I want to get both horizontal and vertical grid lines on my plot but only the horizontal grid lines are appearing by default. I am using a pandas.DataFrame from an sql query in python to generate a line plot with dates on the x-axis. I'm not sure why they do not appear on the dates and I have tried to search for an answer to this but couldn't find one.

我用来绘制图形的全部是下面的简单代码.

All I have used to plot the graph is the simple code below.

data.plot()
grid('on')

data是DataFrame，其中包含日期和来自sql查询的数据.

data is the DataFrame which contains the dates and the data from the sql query.

我也尝试过添加下面的代码，但是我仍然得到相同的输出，但没有垂直网格线.

I have also tried adding the code below but I still get the same output with no vertical grid lines.

ax = plt.axes()        
ax.yaxis.grid() # horizontal lines
ax.xaxis.grid() # vertical lines

有什么建议吗?

推荐答案

您可能需要在通话中提供布尔arg，例如使用ax.yaxis.grid(True)代替ax.yaxis.grid().此外，由于您同时使用这两种方法，因此您可以将它们组合到ax.grid中，这两种方法都可以使用，而不必对每个尺寸都进行一次.

You may need to give boolean arg in your calls, e.g. use ax.yaxis.grid(True) instead of ax.yaxis.grid(). Additionally, since you are using both of them you can combine into ax.grid, which works on both, rather than doing it once for each dimension.

ax = plt.gca()
ax.grid(True)

那应该可以解决您了.

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