If you have ever been handed a dataset and wanted to know the integrity of the content, and any key information sitting inside it, you needed a descriptive analysis.

This is a descriptive analysis of Canada Structures, the federal building-footprint product. A file like this is assembled from several sources and file types, and that mix can leave artifacts. The work was looking for those artifacts so the file can be trusted before anyone treats stored height or type as national fields.

National count is 13,760,754, matching the spec. Every Nunavut footprint stores height as zero (11,068). 66.5% of footprints have a positive stored height. 82.4% carry no building type. Shape, size, and province together score 0.42 at guessing source class, against 0.32 from province alone.

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