when changing current band
Now the widget asks users if they want to delete existing categories
when they switch a band, just like how the categorized renderer
widget asks when the categorized field is changed.
from a raster layer
Adds an easy way to style discrete rasters such as landuse classes
using the Paletted renderer. Just select the Paletted renderer,
pick a band, then hit the "Add Unique Values" button. The unique
pixel values will be fetched from the layer and a color assigned
to each using the currently selected color ramp.
Fix#14845
Sponsored by
- Stéphane Henriod
- Satelligence (http://satelligence.com/)
- Bird's Eye View (https://www.birdseyeviewgis.com/)
- + other anonymous backers
- Switch to a real model
- Allow adding new rows and deleting multiple selected rows
- Allow changing colors inline in style dock (no modal color picker)
Previously the renderer required that pixel values followed
sequential numerical order. This refactor allows values to
be skipped, so that only certain color index will be rendered.
The improvement allows immediate cancellation of raster rendering
in progress. Until now, even when map rendering got cancelled
(e.g. by zooming of panning canvas), the GUI got blocked while waiting
for raster layers to finish their rendering (only vector layers have
had support for cancellation). This should allow for much smoother
user experience while browsing maps including rasters.
The cancellation is supported currently by WMS/WMTS and WCS providers.
GDAL provider may also get support thanks to improvements in GDAL 2.
Funded by Land Information New Zealand.
- rename methods with XML to Xml, CRS to Crs, WMS to Wms, ID to Id
- rename methods with SRS to Crs
- rename methods with abbreviations like "dest" to "destination"
- rename methods with abbreviations like "src" to "source"
Rationale:
- there was a lot of large objects passed by value, so potentially
there's a speed bump from this
- even for implicitly shared classes like QString/QList there's still
a (small) cost for copying the objects when there's no reason to
- it's the right thing to do!
