Pandas多数据集图错误

Question

I have multiple datasets that I need to be plotted on the same axes. Just an example of the datasets are: Dataset 01 as two separate lists:

Waves          Values
340            520
341            532
342            536
.              .
.              .
2500           720

Dataset 02 as a dataframe df:

Wavelength      Data
320             560
350             572
.               .
.               .
2650            780

My attempt at the plot is as follows:

fig,ax=plt.subplots(figsize=(15, 10))
ax = plt.plot(x = Waves , y = Values)   # list names
df.plot(ax=ax, x='Wavelength', y='Data')
plt.show()

I get the following error:

AttributeError: 'list' object has no attribute 'get_figure'

Answer 1

You redefine the axes ax , created in the first line, to be a list of lines via ax=plt.plot(..) . Remove this redefinition.

fig,ax=plt.subplots(figsize=(15, 10))
ax.plot(Waves, Values)
df.plot(ax=ax, x='Wavelength', y='Data')
plt.show()