I get this stack trace when trying to run this command from the first lesson’s juptyer notebook.
data = ImageDataBunch.from_name_re(path_img, fnames, pat, ds_tfms=get_transforms(), size=224, bs=bs
).normalize(imagenet_stats)
---------------------------------------------------------------------------
RuntimeError Traceback (most recent call last)
~\AppData\Local\Programs\Python\Python38\lib\site-packages\fastai\data_block.py in _check_kwargs(ds, tfms, **kwargs)
593 x = ds[0]
--> 594 try: x.apply_tfms(tfms, **kwargs)
595 except Exception as e:
~\AppData\Local\Programs\Python\Python38\lib\site-packages\fastai\vision\image.py in apply_tfms(self, tfms, do_resolve, xtra, size, resize_method, mult, padding_mode, mode, remove_out)
122 x = tfm(x, size=_get_crop_target(size,mult=mult), padding_mode=padding_mode)
--> 123 else: x = tfm(x)
124 return x.refresh()
~\AppData\Local\Programs\Python\Python38\lib\site-packages\fastai\vision\image.py in __call__(self, x, *args, **kwargs)
523 "Randomly execute our tfm on `x`."
--> 524 return self.tfm(x, *args, **{**self.resolved, **kwargs}) if self.do_run else x
525
~\AppData\Local\Programs\Python\Python38\lib\site-packages\fastai\vision\image.py in __call__(self, p, is_random, use_on_y, *args, **kwargs)
469 "Calc now if `args` passed; else create a transform called prob `p` if `random`."
--> 470 if args: return self.calc(*args, **kwargs)
471 else: return RandTransform(self, kwargs=kwargs, is_random=is_random, use_on_y=use_on_y, p=p)
~\AppData\Local\Programs\Python\Python38\lib\site-packages\fastai\vision\image.py in calc(self, x, *args, **kwargs)
474 "Apply to image `x`, wrapping it if necessary."
--> 475 if self._wrap: return getattr(x, self._wrap)(self.func, *args, **kwargs)
476 else: return self.func(x, *args, **kwargs)
~\AppData\Local\Programs\Python\Python38\lib\site-packages\fastai\vision\image.py in affine(self, func, *args, **kwargs)
182 m = tensor(func(*args, **kwargs)).to(self.device)
--> 183 self.affine_mat = self.affine_mat @ m
184 return self
RuntimeError: Expected object of scalar type Float but got scalar type Double for argument #3 'mat2' in call to _th_addmm_out
During handling of the above exception, another exception occurred:
Exception Traceback (most recent call last)
in
----> 1 data = ImageDataBunch.from_name_re(path_img, fnames, pat, ds_tfms=get_transforms(), size=224, bs=bs
2 ).normalize(imagenet_stats)
~\AppData\Local\Programs\Python\Python38\lib\site-packages\fastai\vision\data.py in from_name_re(cls, path, fnames, pat, valid_pct, **kwargs)
156 assert res,f'Failed to find "{pat}" in "{fn}"'
157 return res.group(1)
--> 158 return cls.from_name_func(path, fnames, _get_label, valid_pct=valid_pct, **kwargs)
159
160 @staticmethod
~\AppData\Local\Programs\Python\Python38\lib\site-packages\fastai\vision\data.py in from_name_func(cls, path, fnames, label_func, valid_pct, seed, **kwargs)
145 "Create from list of `fnames` in `path` with `label_func`."
146 src = ImageList(fnames, path=path).split_by_rand_pct(valid_pct, seed)
--> 147 return cls.create_from_ll(src.label_from_func(label_func), **kwargs)
148
149 @classmethod
~\AppData\Local\Programs\Python\Python38\lib\site-packages\fastai\vision\data.py in create_from_ll(cls, lls, bs, val_bs, ds_tfms, num_workers, dl_tfms, device, test, collate_fn, size, no_check, resize_method, mult, padding_mode, mode, tfm_y)
94 mode:str='bilinear', tfm_y:bool=False)->'ImageDataBunch':
95 "Create an `ImageDataBunch` from `LabelLists` `lls` with potential `ds_tfms`."
---> 96 lls = lls.transform(tfms=ds_tfms, size=size, resize_method=resize_method, mult=mult, padding_mode=padding_mode,
97 mode=mode, tfm_y=tfm_y)
98 if test is not None: lls.add_test_folder(test)
~\AppData\Local\Programs\Python\Python38\lib\site-packages\fastai\data_block.py in transform(self, tfms, **kwargs)
503 if not tfms: tfms=(None,None)
504 assert is_listy(tfms) and len(tfms) == 2, "Please pass a list of two lists of transforms (train and valid)."
--> 505 self.train.transform(tfms[0], **kwargs)
506 self.valid.transform(tfms[1], **kwargs)
507 if self.test: self.test.transform(tfms[1], **kwargs)
~\AppData\Local\Programs\Python\Python38\lib\site-packages\fastai\data_block.py in transform(self, tfms, tfm_y, **kwargs)
722 def transform(self, tfms:TfmList, tfm_y:bool=None, **kwargs):
723 "Set the `tfms` and `tfm_y` value to be applied to the inputs and targets."
--> 724 _check_kwargs(self.x, tfms, **kwargs)
725 if tfm_y is None: tfm_y = self.tfm_y
726 tfms_y = None if tfms is None else list(filter(lambda t: getattr(t, 'use_on_y', True), listify(tfms)))
~\AppData\Local\Programs\Python\Python38\lib\site-packages\fastai\data_block.py in _check_kwargs(ds, tfms, **kwargs)
594 try: x.apply_tfms(tfms, **kwargs)
595 except Exception as e:
--> 596 raise Exception(f"It's not possible to apply those transforms to your dataset:\n {e}")
597
598 class LabelList(Dataset):
Exception: It's not possible to apply those transforms to your dataset:
Expected object of scalar type Float but got scalar type Double for argument #3 'mat2' in call
