Node Density Plot

>>> from techminer2.packages.networks.citation.sources  import node_density_plot
>>> plot = (
...     NodeDensityPlot()
...     #
...     # UNIT OF ANALYSIS:
...     .having_terms_in_top(30)
...     .having_citation_threshold(0)
...     .having_occurrence_threshold(2)
...     .having_terms_in(None)
...     #
...     # NETWORK:
...     .using_spring_layout_k(None)
...     .using_spring_layout_iterations(30)
...     .using_spring_layout_seed(0)
...     #
...     # DENSITY:
...     .using_kernel_bandwidth(0.1)
...     .using_colormap("Aggrnyl")
...     .using_contour_opacity(0.6)
...     .using_textfont_size_range(10, 20)
...     #
...     # DATABASE:
...     .where_root_directory_is("example/")
...     .where_database_is("main")
...     .where_record_years_range_is(None, None)
...     .where_record_citations_range_is(None, None)
...     .where_records_match(None)
...     #
...     .run()
... )
>>> # plot.write_html("docs_src/_generated/packages/networks/citation/sources/node_density_plot.html")