CH 11 Sequence Modeling issue about practical-machine-learning-with-python

[raghavbali]

Hi @Noctem123 ,
Thank you for the feedback, we are glad the book is helpful.

Regarding the error, it is most probably due to difference in pandas/numpy version. You must be on a more latest version.
The issue can be fixed by replacing the error line by the following :

time_series = np.array(time_series).reshape(-1,1)
scaled_stock_series = scaler.fit_transform(time_series)

Let us know if this fix solves the issue, meanwhile we will work towards updating the code /documentation as per feasibility.

It worked! Thank you guys, you are the best!

I got the same type of error a little further in the code of sequence modeling, to be exact on this line:

trainPredict = scaler.inverse_transform(trainPredict.reshape(trainPredict.shape[1]))

saying:

ValueError: Expected 2D array, got 1D array instead:
array=[0.19647571 0.22339799 0.23686117 ... 0.22503245 0.22467923 0.22415847].
Reshape your data either using array.reshape(-1, 1) if your data has a single feature or array.reshape(1, -1) if it contains a single sample.

Probably I will get it at the next line too:

testPredict = scaler.inverse_transform(testPredict.reshape(testPredict.shape[1]))

[raghavbali]

Hey @Noctem123 ,
Thanks for pointing out. As noted in the earlier comment, the fix would be similar and the error is coming up due to different pandas versions in place.

We would update the code/documentation to note the versions used to avoid confusion.

Closing this for now.