import os1import dask.dataframe as dd2import holoviews as hv3from holoviews.operation.datashader import datashade45hv.extension('bokeh')67# 1. Load data and Datashade it8ddf = dd.read_parquet("blob_data.parq")[['xgal', 'ygal']].persist()9points = hv.Points(ddf, kdims=['xgal', 'ygal'])10shaded = datashade(points).opts(plot=dict(width=800, height=600))1112# 2. Instead of Jupyter's automatic rich display, render the object as a bokeh document13doc = hv.renderer('bokeh').server_doc(shaded)14doc.title = 'HoloViews Bokeh App'15161718