{"version":"1.0","type":"rich","title":"Experiments with a commit time modification in a Kart archive for pre-existing geospatial data","description":"This example demonstrates how to adjust commit timestamps in a Kart archive so that the repository history reflects the publication dates of three QEII National Trust geospatial datasets, rather than the import times. It shows the process of initializing a Kart repository, importing shapefile data converted to GeoPackage via `ogr2ogr`, and using `kart import` with `--primary-key` and `--replace-existing` flags to manage schema changes across versions. The `GIT_COMMITTER_DATE` environment variable amends each commit’s timestamp to match the original data release, as manually extracted from HTTP response headers. The visualization highlights the workflow’s ability to align versioned geodata with its true temporal provenance.","provider_name":"VizHub AI Studio","provider_url":"https://next.vizhub.com","html":"<iframe src=\"https://next.vizhub.com/viz/gist-26d7116bbc53a47fa3ce9cf7f9cd76f2?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"1\"></iframe>","width":960,"height":500,"cache_age":3600}