QGIS/resources
Nyall Dawson 341add8cb9 Add new variable form of current feature expression functions
This adds a newer style variable form of referencing the current
feature and its attributes in expressions.

The newly introduced variables are:

- @feature: a replacement for $currentfeature, contains the
current feature
- @id: a replacement for $id, contains the current feature id
- @geometry: a replacement for $geometry, contains the current
feature geometry

This is intended as a step towards eventually deprecating the
older $ style functions, and providing a more consistent
approach to expressions instead of the older unpredictable mix of @/$.
For now these old functions still work (and likely will ALWAYS
remain working for old project compatibility), AND they are also
still exposed in the UI just to avoid user confusion (eventually
we can hide them).
2022-09-09 11:30:25 +10:00
..
2022-08-19 10:07:44 +10:00
2022-01-06 21:18:13 +01:00

Updating the srs.db
-------------------

The srs.db can be updated from the EPSG codes in the
GDAL installation:

1) Install latest GDAL, be sure to configure with --with-python.
2) Set PATH and PYTHONDIR if installed GDAL in non-standard location.
3) Run 'scripts/qgis_srs.sh > new_srs.sql'. It may take a minute or two.
4) Run 'sqlite3 new_srs.db < new_srs.sql'.'
4) Run 'sqlite3 new_srs.db <postprocess_srs.sql'

You can use sqlite3 to dump the contents from both srs.db and new_srs.db
before you decide to commit.

Magnus Homann 2009-08-19