code: def test_pandas_transform(self):
      demo_df = pd.DataFrame(
          {
              "value": np.random.randn(50),
              "probability": np.random.rand(50),
          }
      )
      percent = hv.dim("probability") * 100
      scatter = demo_df.hvplot.scatter(
          x="value",
          y="probability",
          transforms=dict(probability=percent),
      )
      self.assertEqual(
          (scatter.data["probability"]).values,
          demo_df["probability"].values * 100,
      )
  
file_path: hvplot/hvplot/tests/testtransforms.py
imports: from unittest import SkipTest
  import holoviews
  import numpy
  import pandas
  from holoviews.element.comparison import ComparisonTestCase
label_desc: Use image node_id 2 for calling the TestPandasTransforms obj's underlying member method code with example usage: obj.test_pandas_transform() without return types