[英]Formatting y-axis tick text plot
The tick text of the y axis in my matplotlib plot has too many decimal digits.我的 matplotlib 图中 y 轴的刻度文本有太多十进制数字。 How can I format the text to show two decimal digits only.如何格式化文本以仅显示两位十进制数字。 IE I would like to convert 10.39658602
into 10.40
IE 我想把10.39658602
转换成10.40
I've already tried with:我已经尝试过:
ax.get_yaxis().set_major_formatter(matplotlib.ticker.FormatStrFormatter('%5.2f'))
but the decimal digits are set to 0 (the previous number becomes 10.00
).但十进制数字被设置为 0 (之前的数字变为10.00
)。 Here is some image.这是一些图像。 Before:前:
Edit: I'm including also an example of the code to reproduce the problem.编辑:我还包括一个重现问题的代码示例。
fig = plt.figure()
ax = fig.add_subplot(1, 1, 1)
lineObjects = plt.plot(epochs, data1, 'rs',
epochs, data2, 'b^',
epochs, data3, 'gv',
epochs, data4, 'ko', )
# also %.2f does not work as intended
ax.get_yaxis().set_major_formatter(matplotlib.ticker.FormatStrFormatter('%5.2f'))
plt.show()
I'm using Python 3.6 on Anaconda.我在 Anaconda 上使用 Python 3.6。 data1
, data2
, data3
, data4
are NumPy ndarray
s of type str_
, I've already tried to convert them to float
, but the results are similar. data1
, data2
, data3
, data4
是NumPy的ndarray
S型str_
,我已经尝试将它们转换为float
,但结果是类似的。
使用这种格式。
ax.yaxis.set_major_formatter(matplotlib.ticker.FormatStrFormatter('%.2f'))
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