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BUG: AttributeError: 'float' object has no attribute 'shape'

See original GitHub issue

Describe your issue.

I tried to plot QQ plot by using stats.probplot, but raised AttributeError.

Reproducing Code Example

stats.probplot(
    df['col'], 
    dist="norm", 
    plot=pylab
    )
pylab.show()

Error message

AttributeError: 'float' object has no attribute 'shape'

SciPy/NumPy/Python version information

1.7.3 1.21.6 sys.version_info(major=3, minor=7, micro=15, releaselevel=‘final’, serial=0)

Issue Analytics

State:
Created 10 months ago
Comments:9 (4 by maintainers)

Top GitHub Comments

1reaction

WarrenWeckessercommented, Nov 20, 2022

Almost certainly, the data type of the data in the Pandas DataFrame create by bigquery is object. I can recreate the problem with a numpy array with data type object:

In [140]: from scipy.stats import probplot

In [141]: a = np.arange(20.0).astype(object)

In [142]: probplot(a, dist='norm')
---------------------------------------------------------------------------
AttributeError                            Traceback (most recent call last)
[... snip ...]
File /Library/Frameworks/Python.framework/Versions/3.10/lib/python3.10/site-packages/numpy/lib/function_base.py:554, in average(a, axis, weights, returned, keepdims)
    550     avg = np.multiply(a, wgt,
    551                       dtype=result_dtype).sum(axis, **keepdims_kw) / scl
    553 if returned:
--> 554     if scl.shape != avg.shape:
    555         scl = np.broadcast_to(scl, avg.shape).copy()
    556     return avg, scl

AttributeError: 'float' object has no attribute 'shape'

Try passing df['col'].to_numpy(dtype=float) to probplot.

0reactions

bhaskoro-muthoharcommented, Nov 20, 2022

Almost certainly, the data type of the data in the Pandas DataFrame create by bigquery is object. I can recreate the problem with a numpy array with data type object:

In [140]: from scipy.stats import probplot

In [141]: a = np.arange(20.0).astype(object)

In [142]: probplot(a, dist='norm')
---------------------------------------------------------------------------
AttributeError                            Traceback (most recent call last)
[... snip ...]
File /Library/Frameworks/Python.framework/Versions/3.10/lib/python3.10/site-packages/numpy/lib/function_base.py:554, in average(a, axis, weights, returned, keepdims)
    550     avg = np.multiply(a, wgt,
    551                       dtype=result_dtype).sum(axis, **keepdims_kw) / scl
    553 if returned:
--> 554     if scl.shape != avg.shape:
    555         scl = np.broadcast_to(scl, avg.shape).copy()
    556     return avg, scl

AttributeError: 'float' object has no attribute 'shape'

Try passing df['col'].to_numpy(dtype=float) to probplot.

Yess, it’s worked like a charm! Thanks!!