Comments (4)
Thanks for raising the issue! It is a good request and this is already happening if it is a geodataframe, see around here: https://github.com/mattijn/topojson/blob/main/topojson/core/extract.py#L533.
Just make sure that you only do this if the index of the full collection is unique. If you want to do a PR, which will be much appreciated!, you can do this with a simple if/else condition.
Hope that helps! And thanks again for raising the issue!
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What would be the expectation if duplicate ids were found?
- Raise an error, possibly with the duplicate ids and their indexesisted.
- Fallback to the default id naming convention (feature_{idx}
- Check each id and append idx to the duplicate ids or something
Edit: shouldn't have tried to type this on mobile
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Maybe best using a new parameter in the Topology()
class?
Like:
ignore_index
: bool
, default False
And then do your suggested option 1 if False
(default) and if True
your option 2?
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Released as of v1.9
from topojson.
Related Issues (20)
- tp.Topology.to_json(pretty=True) doesn't handle None correctly. (Doens't convert None to null) HOT 1
- Converting GeoJSON FeatureCollection to TopoJSON HOT 1
- BUG: `Topology.to_gdf` should keep the original index HOT 2
- holes in multipolygons are lost by simplification HOT 4
- Deprecation warning for shapely 2.0 HOT 3
- Wrong topologies/arcs being created? HOT 7
- Creating a topology for data without junctions and shared_coords=False, prequantize=False gives error
- Bug: polygons that entirely fill islands in another polygon are often not dedupped
- shared_coords=True vs shared_coords=False HOT 5
- Linestrings that follow the same path but where one contains extra redundant points are not deduplicated
- enh: include features that are possible with shapely 2.0
- tests failing, natural earth dataset changed HOT 2
- RuntimeWarning: invalid value encountered in cast HOT 3
- IndexError: pop index out of range when instanciating Topology with a list of GeoDataFrame HOT 10
- Coordinates not reported correctly on Multipoint with only one point HOT 2
- Excessive memory usage with prequantization enabled HOT 5
- serialize_as_geojson outputs invalid GeoJSON HOT 2
- Topojson >=1.6 requires Python >=3.8, but there is no guard against Python <3.8 HOT 2
- Converting TopoJson to a GeoJSon object_name not changing HOT 2
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