html_url,issue_url,id,node_id,user,user_label,created_at,updated_at,author_association,body,reactions,issue,issue_label,performed_via_github_app
https://github.com/simonw/sqlite-utils/issues/399#issuecomment-1030712129,https://api.github.com/repos/simonw/sqlite-utils/issues/399,1030712129,IC_kwDOCGYnMM49b2tB,9599,simonw,2022-02-05T23:08:45Z,2022-02-05T23:08:45Z,OWNER,"Useful thoughts on Twitter regarding making coordinate pairs easy and more complex shapes possible:
https://twitter.com/dbreunig/status/1490099303888547843
> That is exactly where I was going: two modes.
>
> 1. Heuristics and assumptions to get coordinates as a pair (in tuple) or as columns (look for lat, lon, latitude, longitude, etc).
> 2. GIS mode with projections, polys, etc
>
> Make it easy for people with csvs of coordinates. If you're using Geojson or shp files, you have to specify.","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1124731464,"Make it easier to insert geometries, with documentation and maybe code",
https://github.com/simonw/sqlite-utils/issues/399#issuecomment-1030468418,https://api.github.com/repos/simonw/sqlite-utils/issues/399,1030468418,IC_kwDOCGYnMM49a7NC,9599,simonw,2022-02-05T00:49:08Z,2022-02-05T22:59:06Z,OWNER,"I'm trying to think of ways to make this nicer from the perspective of someone calling the `.insert()` or `.insert_all()` methods against a table that has geometry columns.
One option would be for the code to introspect the table (if it exists) before running the insert, looking for any geometry columns.
This introspection isn't easy! The table schema just gives you `""name_of_column"" point` or similar - to figure out the SRID and suchlike you need to consult the `geometry_columns` table, I think - which throws a 500 error on https://calands.datasettes.com/calands/geometry_columns for some reason. Also does the shape of that table change between SpatiaLite versions?
Assuming we can introspect the table, what would we do with that information? We could add code that detects if the user attempted to pass GeoJSON objects and automatically inserts a `GeomFromGeoJSON()` function call - but detecting GeoJSON is a bit weird, and GeoJSON also isn't necessarily the nicest format for populating e.g. latitude/longitude points.
Maybe we just support the simplest possible case: a tuple of floats, which we assume is `latitude, longitude` (or should we expect `longitude, latitude`, the eternal debate?) - if those are used against a geometry table (especially a point table) we assume they are coordinates that need to be converted using `GeomFromText('POINT(...`.
Not crazy about either of these ideas. Is there something better?","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1124731464,"Make it easier to insert geometries, with documentation and maybe code",
https://github.com/simonw/sqlite-utils/issues/399#issuecomment-1030466255,https://api.github.com/repos/simonw/sqlite-utils/issues/399,1030466255,IC_kwDOCGYnMM49a6rP,9599,simonw,2022-02-05T00:41:35Z,2022-02-05T00:42:23Z,OWNER,"Wow, it was the newlines that broke it! This works fine:
```sql
select AsWKT(SetSRID(GeomFromGeoJSON('{""type"": ""Point"",""coordinates"": [-94.921875,45.460130637921004]}'), 4326))
```
https://calands.datasettes.com/calands?sql=select+AsWKT%28SetSRID%28GeomFromGeoJSON%28%27%7B%22type%22%3A+%22Point%22%2C%22coordinates%22%3A+%5B-94.921875%2C45.460130637921004%5D%7D%27%29%2C+4326%29%29
And removing `SetSRID()` returns exactly the same result:
https://calands.datasettes.com/calands?sql=select+AsWKT%28GeomFromGeoJSON%28%27%7B%22type%22%3A+%22Point%22%2C%22coordinates%22%3A+%5B-94.921875%2C45.460130637921004%5D%7D%27%29%29","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1124731464,"Make it easier to insert geometries, with documentation and maybe code",
https://github.com/simonw/sqlite-utils/issues/399#issuecomment-1030465557,https://api.github.com/repos/simonw/sqlite-utils/issues/399,1030465557,IC_kwDOCGYnMM49a6gV,9599,simonw,2022-02-05T00:39:09Z,2022-02-05T00:39:09Z,OWNER,"I can't seem to get `GeomFromGeoJSON()` to work - example:
https://calands.datasettes.com/calands?sql=select+IsValid%28SetSRID%28GeomFromGeoJSON%28%27%7B%0D%0A++++++++%22type%22%3A+%22Point%22%2C%0D%0A++++++++%22coordinates%22%3A+%5B%0D%0A++++++++++-94.921875%2C%0D%0A++++++++++45.460130637921004%0D%0A++++++++%5D%0D%0A++++++%7D%27%29%2C+4326%29%29
```sql
select IsValid(SetSRID(GeomFromGeoJSON('{
""type"": ""Point"",
""coordinates"": [
-94.921875,
45.460130637921004
]
}'), 4326))
```
Returns `-1` suggesting the geometry is not valid. Just doing this (with or without that `SetSRID()` function) returns null:
```sql
select SetSRID(GeomFromGeoJSON('{
""type"": ""Point"",
""coordinates"": [
-94.921875,
45.460130637921004
]
}'), 4326)
```","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1124731464,"Make it easier to insert geometries, with documentation and maybe code",
https://github.com/simonw/sqlite-utils/issues/399#issuecomment-1030461163,https://api.github.com/repos/simonw/sqlite-utils/issues/399,1030461163,IC_kwDOCGYnMM49a5br,9599,simonw,2022-02-05T00:30:18Z,2022-02-05T00:30:18Z,OWNER,"I wonder what the most developer-friendly way to insert geometry data into SpatiaLite is?
From https://www.gaia-gis.it/gaia-sins/spatialite-sql-latest.html it looks like these are the main options:
- `GeomFromText( wkt String [ , SRID Integer] )`
- `GeomFromWKB( wkbGeometry Binary [ , SRID Integer] )`
- `GeomFromKml( KmlGeometry String )`
- `GeomFromGML( gmlGeometry String )`
- `GeomFromGeoJSON( geoJSONGeometry String )`
- `GeomFromEWKB( ewkbGeometry String )`
- `GeomFromEWKT( ewktGeometry String )`
- `GeomFromFGF( fgfGeometry Binary [ , SRID Integer] )`
- `GeomFromTWKB( twkbGeometry BLOB [ , SRID Integer] )`
- `GeomFromGPB( geom GPKG Blob Geometry )` - GeoPackage format
- `GeomFromExifGpsBlob( image BLOB )`
Interesting that some accept an SRID and others do not - presumably `GeomFromGeoJSON()` always uses SRID=4326?","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1124731464,"Make it easier to insert geometries, with documentation and maybe code",
https://github.com/simonw/sqlite-utils/issues/399#issuecomment-1030455715,https://api.github.com/repos/simonw/sqlite-utils/issues/399,1030455715,IC_kwDOCGYnMM49a4Gj,9599,simonw,2022-02-05T00:15:28Z,2022-02-05T00:15:28Z,OWNER,"The `conversions=` argument to `.insert()` and friends is designed to handle this case, but I don't think it's very elegant: https://sqlite-utils.datasette.io/en/stable/python-api.html#converting-column-values-using-sql-functions
```python
db[""places""].insert(
{""name"": ""Wales"", ""geometry"": wkt},
conversions={""geometry"": ""GeomFromText(?, 4326)""},
)
```","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1124731464,"Make it easier to insert geometries, with documentation and maybe code",