When saving a vector layer into an existing file, depending on the capabilities
of the output driver, the user can now decide whether:
- to overwrite the whole file
- to overwrite only the target layer (layer name is now configurable)
- to append features to the existing target layer
- to append features, add new fields if there are any.
All above is available for drivers like GPKG, SpatiaLite, FileGDB, ...
For drivers like Shapefile, MapInfo .tab, feature append is also available.
The order of the elements is irrelevant and duplicate elements are unwanted. It
is therefore a perfect candidate for a set instead of a list. This prevents
filtering for duplicates manually be replacing some filer codes with (more
performant) builtin methods of QSet.
Groups nearby points into a single rendered marker symbol.
QgsPointDisplacementRenderer has been split into a new
pure virtual QgsPointDistanceRenderer base class which handles the
detection of clusters and grouping of points. The new cluster
renderer reuses this base class to avoid code duplication.
Additionally, some improvements have been made to the
displacement renderer, specifically:
- points are now assigned to the group which is "nearest" them,
rather then just assigning them first group within the search
distance. In some cases this was assigning features to a more
distant cluster, resulting in less predictable cluster patterns
- individual points are now correctly shown in their own
selection state
Lots of code cleanup + documentation too.
Sponsored by:
- Andreas Neumann
- Qtibia Engineering (Tudor Barascu)
- Karl-Magnus Jönsson
- Geonesia (Nicolas Ponzo)
- Plus numerous additional anonymous backers whose generous
contributions are also highly valued!
Fixed the add relation functionnality: the table is sorted. When the code
was setting the sorted column, the row was sorted and the other columns it was
setting were set on the wrong row.
New versions of GDAL/OGR (since trunk@35289) convert list types (StringList,
IntegerList, Integer64List and RealList) to a JSON string when it stores a
Spatialite table. It sets the column type as JSONSTRINGLIST, JSONINTEGERLIST,
JSONINTEGER64LIST or JSONREALLIST.
Allows use of a color ramp consisting of a list of selected colors.
Currently there's no way in QGIS to classify a renderer using
some list of colors you've previously selected. So you can modify
the colors manually after classifying, but that's a pain
if you're regularly using the same color scheme.
Basically, it's like the color brewer color ramp options but
allowing users to pick their own preset list of colors to use*
(Because Cynthia Brewer isn't the only cartographic color expert!)
QgsSymbol::RenderHints QFlags value instead of a raw int
Also rename DataDefinedRotation to DynamicRotation since
it is no longer used for data defined rotation
