Create a topic frequency heatmap

Please clarify what data you’d like the heatmap to visualize. To create a topic frequency heatmap, I need one of the following:

1. A dataset: List of topics and their frequency across categories (e.g., articles, time periods, departments).

2. Text corpus: I can extract and count topics from the text and generate the heatmap.

3. Spreadsheet/file: Upload a CSV or Excel file if you have one.

Let me know which one you have, or paste the data directly here.