Heat Map Graph
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Create and display heat maps from custom SQL queries. Define row, column, and value fields, select color ranges, and render via shortcode.
Heat Map Graph lets administrators build data heat maps backed by SQL SELECT queries on WordPress tables. Configure:
- Query: a single SELECT statement targeting WP tables
- Field mapping: row, column, and value fields produced by the query
- Color range: hex colors for min and max
- Status: enable/disable
Use the shortcode on pages/posts:
[heat_map_graph id="123"]
Security features: – Validates SQL is a single SELECT against WP tables only – Blocks DML/DDL keywords – No multiple statements – Admin-only UI with nonces and strict sanitization
On activation, two sample heat maps are created: – Posts per Day per Category (Last 30 Days) – Number of Post Tags per Category
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