4 Commits

Author SHA1 Message Date
Antoine Facchini
46ed1e12bd refacto: replace the parameter name 'i' to 'vertex' 2022-11-29 17:47:53 +01:00
Antoine Facchini
d8131a0791 feature: add x_at, y_at, z_at and m_at expressions 2022-11-29 17:47:52 +01:00
Nyall Dawson
55027e545f Clean up and extend expression geometry functions:
- New expression functions for area(geom), perimeter(geom),
point_n(geom), start_point(geom), end_point(geom), make_point(x,y)
- Add new variant to length() function which takes a geometry object,
allows for length(geom) evaluation.
- Rename x_at, y_at to $x_at, $y_at (alias old names) to reflect that
these only work on current feature geometry
- Add x(geom), y(geom) functions which return x and y coordinate
for point geometries or centroid x/y for non-point geometries
(fix #11008)
2015-09-18 09:09:09 +10:00
Nyall Dawson
709c14391b Change expression help from free form html files to structured json
A new script then parses these json help files into the html help
contents, in a standardised manner. Previously, the function help
was a bunch of different formats and structures.

Now, a custom stylesheet can be applied (and later tweaked!) to
format these help. Eg, this commit colors variables and function
names in the syntax section for greater readability.
2015-09-02 14:22:50 +10:00