[gdal-dev] adding points to geometries

[Javier Jimenez Shaw]

Thanks Paul

I don't know if I was clear. Every segment that crosses the equator should
become two segments, with the common point at lat=0.
(I do not need the points themselves, I just want to add points to the
lines and polygons, making "explicit" where they cross the equator).

On Sun, 26 Jan 2025 at 13:37, Paul Harwood <runette at gmail.com> wrote:

> I would have thought : create a linesegment that is the equator and
> perform an intersection between that linesegment and the target geometry to
> identify the point in question and then create a new geometry with the new
> point, or something like that.
>
> I am not sure what it would mean to add a point to polygon crosses the
> equator - I would guess that would mean adding a vertex at the equator, in
> which case I think the intersection would return a line (I have never done
> it) and the vertices in question would be the points of the returned
> linesegment.
>
> On Sun, 26 Jan 2025 at 10:26, Javier Jimenez Shaw via gdal-dev <
> gdal-dev at lists.osgeo.org> wrote:
>
>> Hi
>>
>> I have a vector layer (like
>> /usr/share/qgis/resources/data/world_map.gpkg) and I need to add a point at
>> latitude 0 for every segment (in line or polygon) that crosses the equator.
>>
>> How can I do it?
>>
>> Thanks,
>> Javier.
>> _______________________________________________
>> gdal-dev mailing list
>> gdal-dev at lists.osgeo.org
>> https://lists.osgeo.org/mailman/listinfo/gdal-dev
>>
>
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