I have a model with a couple of predictor variables, stored in a dataframe. I’m doing some deterministic transformations of those variables, and for some reason, some transforms give me ValueError: length not known: Elemwise{<operator>,no_inplace} and some don’t. Here’s a sample, where t0 and theta …

ValueError: length not known: Elemwise

karthy257 July 5, 2022, 4:32pm 4

Thank you so much. I got the same error and worked for me. Is it advisable to use np.arrays, instead of pd.dataframe when we input x’s, y’s in the model? Thanks.

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ValueError: length not known: Elemwise

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