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30 Commits

Author SHA1 Message Date
Nyall Dawson
c23e3096fe More descriptive function help for area/length/perimeter functions 
...which better clarify how project ellipsoid and unit settings are
respected by the functions
 2016-02-23 11:48:10 +11:00
Matthias Kuhn
a2030d53fe Fix 2.5D renderer problem when order of walls matters 
E.g. when the walls have different styles
 2016-01-15 16:23:13 +01:00
Nyall Dawson
275eb9463d [FEATURE] Add closest_point and shortest_line expression functions 
closest_point: returns closest point a geometry to a second geometry
shortest_line: returns the shortest possible line joining two
geometries
 2016-01-15 12:50:17 +11:00
Matthias Kuhn
542541007c Add extrude function to QgsGeometry 2016-01-14 12:28:31 +01:00
Matthias Kuhn
b7170b82d3 Add azimuth function 2016-01-13 11:14:25 +01:00
Nyall Dawson
5b244ae88c [FEATURE] More geometry functions for expressions 
- add accessors: geometry_n, interior_ring_n
- add num_geometries, num_rings, num_interior_rings
- add nodes_to_points for converting every node in a geometry
to a multipoint geometry
- add segments_to_lines for converting every segment in a geometry
to a multiline geometry

nodes_to_points and segments_to_lines are intended for use with
geometry generator symbology, eg to allow use of m and z values
for nodes/lines with data defined symbology.
 2015-12-15 11:22:39 +11:00
Nyall Dawson
ceddb7eb97 [FEATURE] is_closed function for expressions 
Returns whether a linestring is closed
 2015-12-13 22:06:22 +11:00
Nyall Dawson
262514d97d [FEATURE] exterior_ring function for expressions 
Returns exterior ring of a polygon as a line. Useful for geometry
generator symbology for styling only the exterior ring of
polygons.
 2015-12-13 20:11:19 +11:00
nirvn
35fea9c986 [expression] add point_on_surface function 2015-12-12 17:16:34 +07:00
Matthias Kuhn
28cabbe4d0 [Expression] radians and degrees 2015-12-10 00:41:42 +01:00
nirvn
a5d670233b [FEATURE] add darker() and lighter() expression functions 2015-12-09 15:50:59 +11:00
Matthias Kuhn
4b3083d9a7 [FEATURE] Add translate expression function 
Funded by
 * Regional Council of Picardy
 * ADUGA
 * Ville de Nyon
 * Wetu GIT cc
 2015-12-08 08:49:05 +01:00
Matthias Kuhn
f961ecef46 [FEATURE] Add an eval expression 
Funded by
 * Regional Council of Picardy
 * ADUGA
 * Ville de Nyon
 * Wetu GIT cc
 2015-12-08 08:43:45 +01:00
Nyall Dawson
da436f926b [FEATURE] New 'reverse' expression for reversing linestrings 2015-11-26 16:53:55 +11:00
Juergen E. Fischer
90053c52d6 also update strpos function help (followup 2a557db) 2015-11-20 19:53:30 +01:00
Nyall Dawson
de1540357b [expressions] Add make_line and make_polygon functions 2015-11-06 20:09:48 +11:00
Nyall Dawson
12e34f2672 [expressions] Allow make_point to accept z/m values, add new 
make_point_m for creation of PointM geometries. Also add
m(point) and z(point) functions for retrieving z/m value of
a point or node.
 2015-11-06 20:09:13 +11:00
Nyall Dawson
da942233e7 Add DE-9IM variant which tests against a specified pattern 
(available in PyQGIS/expression engine)
 2015-11-04 16:03:55 +11:00
Nyall Dawson
9d4e995de6 [FEATURE] Add geometry relation DE-9IM expression function 2015-10-26 22:46:53 +11:00
Juergen E. Fischer
3c324c9985 fix lpad/rpad context help (followup b46cbbe) 2015-09-27 01:52:20 +02:00
Juergen E. Fischer
b46cbbe425 fix mixup between lpad/rpad help (fixes #13433) 2015-09-26 21:32:27 +02:00
Nyall Dawson
a4d980d055 Port from expressions+ plugin: color_part, set_color_part, day_of_week 2015-09-21 19:57:58 +10:00
Juergen E. Fischer
82b34afe03 move remaining function_help to json and update it's translation handling 2015-09-20 18:35:27 +02:00
Matthias Kuhn
2a6cff403b More examples for the expression function help 2015-09-20 13:59:54 +02:00
Matthias Kuhn
b2c404d17c Improve expression help 2015-09-20 13:51:10 +02:00
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
Sandro Santilli
55dbc041a8 [FEATURE] Add num_points(geometry) support in expression evaluator 
Includes tests and help text.
 2015-09-17 14:23:19 +02:00
Matthias Kuhn
25af142456 Add expression function help for $length 2015-09-17 11:08:29 +02:00
Juergen E. Fischer
e2816256f6 translation fix 2015-09-13 20:24:42 +02:00
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