COORDS = {"splines": np.arange(B.shape[1])}
with pm.Model(coords=COORDS) as spline_model:
a = pm.Normal("a", 100, 5)
w = pm.Normal("w", mu=0, sigma=3, size=B.shape[1], dims="splines")
mu = pm.Deterministic("mu", a + pm.math.dot(np.asarray(B, order="F"), w.T))
sigma = pm.Exponential("sigma", 1)
D = pm.Normal("D", mu=mu, sigma=sigma, observed=blossom_data.doy, dims="obs")
Error:
---------------------------------------------------------------------------
KeyError Traceback (most recent call last)
Cell In[13], line 7
5 mu = pm.Deterministic("mu", a + pm.math.dot(np.asarray(B, order="F"), w.T))
6 sigma = pm.Exponential("sigma", 1)
----> 7 D = pm.Normal("D", mu=mu, sigma=sigma, observed=blossom_data.doy, dims="obs")
File ~/miniforge3/envs/pymc-dev/lib/python3.11/site-packages/pymc/distributions/distribution.py:304, in Distribution.__new__(cls, name, rng, dims, initval, observed, total_size, transform, *args, **kwargs)
302 if kwargs.get("size") is None and kwargs.get("shape") is None:
303 if dims is not None:
--> 304 kwargs["shape"] = shape_from_dims(dims, model)
305 elif observed is not None:
306 kwargs["shape"] = tuple(observed.shape)
File ~/miniforge3/envs/pymc-dev/lib/python3.11/site-packages/pymc/distributions/shape_utils.py:507, in shape_from_dims(dims, model)
505 unknowndim_dims = set(dims) - set(model.dim_lengths)
506 if unknowndim_dims:
--> 507 raise KeyError(
508 f"Dimensions {unknowndim_dims} are unknown to the model and cannot be used to specify a `shape`."
509 )
511 return tuple(model.dim_lengths[dname] for dname in dims)
KeyError: "Dimensions {'obs'} are unknown to the model and cannot be used to specify a `shape`."
Note that this issue tracker is about the contents in the notebooks, if
the notebook is instead triggering a bug or error in pymc, please
report to https://github.com/pymc-devs/pymc/issues instead
Expected output
If applicable, describe what should happen instead.
Proposed solution
If applicable, explain possible solutions and workarounds.
Notebook title: Splines Notebook url: https://www.pymc.io/projects/examples/en/latest/case_studies/spline.html
Issue description
Code:
Error:
Note that this issue tracker is about the contents in the notebooks, if the notebook is instead triggering a bug or error in pymc, please report to https://github.com/pymc-devs/pymc/issues instead
Expected output
If applicable, describe what should happen instead.
Proposed solution
If applicable, explain possible solutions and workarounds.