text: """
  Dask nD image
  =============
  
  Display a dask array
  """
  
  try:
      from dask import array as da
  except ModuleNotFoundError:
      raise ModuleNotFoundError(
          """This example uses a dask array but dask is not
      installed. To install try 'pip install dask'."""
      )
  
  import numpy as np
  from skimage import data
  import napari
  
  
  blobs = da.stack(
      [
          data.binary_blobs(
              length=128, blob_size_fraction=0.05, n_dim=3, volume_fraction=f
          )
          for f in np.linspace(0.05, 0.5, 10)
      ],
      axis=0,
  )
  viewer = napari.view_image(blobs.astype(float))
  
  if __name__ == '__main__':
      napari.run()
  