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47 Commits

Author SHA1 Message Date
Nyall Dawson
82312e10e4 [FEATURE][processing] New algorithm to extract specific nodes 
This algorithm allows you to extract specific nodes from geometries.
Eg you can extract the first or last node in the geometry.

The algorithm accepts a comma separated list of node indices to
extract, eg 0 = first node, 1 = second node, etc. Negative indices
can be used to extract nodes from the end of the geometry. Eg
-1 = last node, -2 = second last node.
 2016-10-31 07:56:24 +10:00
Nyall Dawson
8dab2cd4d7 [FEATURE][processing] New algorithm to extend lines 
Allows extending linestrings by a set distance at the start
and end of the line
 2016-10-31 07:56:24 +10:00
Nyall Dawson
74e64645e4 [FEATURE][processing] New extract by expression algorithm 
Filters an input layer by expression
 2016-10-29 08:05:26 +10:00
Nyall Dawson
5eb875d63b [processing] Add algorithm to strip null geometries 2016-10-24 11:24:37 +10:00
Alexander Bruy
58f31f1a82 [processing] add tests for interpolation tools 2016-10-19 16:43:05 +03:00
Piotr Pociask
3af23036fd Test for multipoint Delaunay triangulation 2016-10-19 11:15:38 +02:00
Nyall Dawson
a05b610a8b [processing] Use prepared geometries for intersects tests 
Wherever possible use prepared geometry engines for intersects
type tests, as it's much faster
 2016-10-17 11:18:46 +10:00
Alexander Bruy
a356bac1a5 [procesing] add tests for raster terrain analysis algorithms 2016-10-11 11:57:04 +03:00
Nyall Dawson
d4323addf0 [processing] Fix missing points in polygons menu item (fix #15670) 
Also add a unit test
 2016-10-11 09:30:46 +10:00
Nyall Dawson
90aebd117d [processing] Add geometry info should add z/m values (fix #14659) 2016-10-11 09:30:41 +10:00
Nyall Dawson
4d60d0cdb5 [FEATURE] Add option to QgsGeometry::smooth to not smooth 
segments shorter than a certain threshold or sharp corners
with an angle exceeding a threshold

Expose the angle threshold to processing smooth algorithm

Also:
- optimise QgsGeometry::smooth for new geometry classes
- Fix smooth does not work with geometries containing Z/M
 2016-09-03 08:31:33 +10:00
Nyall Dawson
56b77db88c [FEATURE][processing] Add choice of simplification method to simplify 
This change allows users to choose which method to use when running
the simplify geometries algorithm, with choices of the existing
distance based (Douglas Peucker) algorithm, area based (Visvalingam)
algorithm and snap-to-grid.

Visvaligam in particular usually results in more cartographically
pleasing simplification over the standard distance based methods.
 2016-09-01 08:22:18 +10:00
Nyall Dawson
5d97d03ad5 [processing] Fix simplify alg handling of null goemetry, add tests 2016-09-01 07:50:02 +10:00
Nyall Dawson
9fa4e776db [FEATURE][processing] Extract nodes algorithm now saves node 
index, distance along line and angle at node

Also correctly handles null geometries
 2016-08-29 11:02:14 +10:00
Nyall Dawson
8db9284cb3 [FEATURE][processing] Optimised points along geometry algorithm 
Supports also polygon geometries, handles null geometries,
and records the original line angle along with the distance
for each point.
 2016-08-29 11:01:48 +10:00
Nyall Dawson
989d9864c5 [FEATURE][processing] New algorithm for single sided buffers 2016-08-17 06:44:04 +10:00
Nyall Dawson
0f268bf27a [FEATURE][processing] New algorithm for translating (moving) points 
Allows geometries to be shifted by a x/y displacement
 2016-08-14 14:36:10 +10:00
Nyall Dawson
e9423dc4dd [processing] Rework centroid algorithm to handle non-polygon layers 
The existing polygoncentroids algorithm has been deprecated
(and hidden from the toolbox), and a new, generic centroids
algorithm added which works with lines and multipoints
 2016-08-12 07:50:47 +10:00
Nyall Dawson
5025c828e5 [processing] Expose buffer settings (cap/join style/mitre limit) 
Also make fixed distance buffer correctly handle null geometries
(copy the row as a geometryless row)
 2016-08-11 18:35:30 +10:00
Nyall Dawson
0a2b661ecb Make QgsGeometry::offsetCurve handle multi* geometries 2016-08-11 17:59:01 +10:00
Nyall Dawson
82f4a82c66 [FEATURE][processing] New algorithm for offsetting lines 2016-08-11 08:38:43 +10:00
Nyall Dawson
142de7cb08 [FEATURE][processing] Point on surface algorithm 2016-08-10 16:57:38 +10:00
Nyall Dawson
ab022451a5 [FEATURE][processing] New algorithm for geometry boundary 2016-08-10 16:32:31 +10:00
Nyall Dawson
bd8db5d156 [FEATURE][processing] New algorithm for calculating feature bounding boxes 2016-08-10 15:41:44 +10:00
Nyall Dawson
bb54b4f41a [FEATURE] Make processing dissolve algorithm accept multiple fields 
This allows you to dissolve based on more than one field value
 2016-08-02 11:54:02 +10:00
Nyall Dawson
0455b6600d [processing] Fix multipart to singlepart handling of null geometry 2016-08-02 11:53:11 +10:00
Nyall Dawson
ccfd4c36be [processing] Add test for dissolve using field values 2016-08-02 11:52:37 +10:00
Nyall Dawson
30fcaed634 [FEATURE][processing] New algorithm for merging connected lines 
This algorithm joins all connected parts of MultiLineString
geometries into single LineString geometries.

If any parts of the input MultiLineString geometries are not
connected, the resultant geometry will be a MultiLineString
containing any lines which could be merged and any non-connected
line parts.
 2016-08-02 11:51:44 +10:00
Nyall Dawson
2db7fca7a6 [processing] Add tests for clip algorithm 2016-07-14 08:05:59 +10:00
Matthias Kuhn
dbb24e971e [processing tests] More tolerance in statistics test 2016-05-22 21:52:55 +02:00
Alexander Bruy
b7a4e20627 [processing] add Rectangles, Ovals, Diamonds algorithm (fix #11575) 
This is direct port of abandoned "Rectangles, Ovals and diamonds" plugin.
There are two algorithms: one uses fixed values and second — variable
values from attribute table. Test for fixed distance version included.
 2016-04-13 12:33:08 +03:00
Matthias Kuhn
f88cf7de8a Drop processing algorithm comparison precision 2016-04-09 09:48:46 +02:00
Nyall Dawson
a30bf95c4b Drop precision of some processing tests to pass on Windows 2016-03-31 16:44:57 +11:00
Anita Graser
b8d1fb6fc9 added buffer tests 2016-03-27 13:31:14 +02:00
Maximilian Krambach
097b18190c identation errors and wrong file paths 2016-03-22 22:01:21 +01:00
Maximilian Krambach
2f97ec670c fixed wrong location of testdata 2016-03-22 12:13:19 +01:00
Maximilian Krambach
9bc9e6b36b identation 2016-03-22 09:22:22 +01:00
Maximilian Krambach
c445828f9e changed check for validity from isGeosValid() to validateGeometry() in dissolve.py 2016-03-21 21:30:23 +01:00
Bernhard Ströbl
02df48cf43 [processing] reflect changed test input in yaml file 2016-03-16 14:10:56 +01:00
Bernhard Ströbl
082b5757dc [processing] add test for eliminate algorithm 2016-03-16 14:05:39 +01:00
Matthias Kuhn
f8175d33ef [processing] Move custom source data to separate folder 2016-03-16 08:56:27 +01:00
Bernhard Ströbl
b432bde1bf [processing] remove double quotes in test.yaml 2016-03-16 08:51:39 +01:00
Bernhard Ströbl
d7562eef95 [processing] add test for eliminate algorithm 2016-03-16 08:36:02 +01:00
Matthias Kuhn
e888d6d684 [processing] Add autoincremental field test 2016-03-15 11:45:34 +01:00
Bernhard Ströbl
97b0375804 [processing] test: limit coordinate comparison precision 2016-03-14 09:57:04 +01:00
Bernhard Ströbl
bf54b9529a [processing] test cases for splitlineswithlines 2016-03-14 09:57:04 +01:00
Matthias Kuhn
450fb13047 [processing] Move AlgorithmTests to QgisAlgorithmTests 2016-02-23 09:33:41 +01:00