This numeric format allows users to craft a custom QGIS expression
to format numbers. The expression can use the @value variable
to retrieve the value to be formatted, and then use any standard
QGIS expression function to format this as desired.
It can be used anywhere QgsNumericFormat is accepted, eg layout
scalebars, elevation plots, layout tables, and color ramp
legends
Sponsored by the Swiss QGIS User Group
This method attempts to interpolate the point on a linestringM
where a specified m value falls. It does this by interpolating
M values along the line string segments, finding the first
segment at which the target M value falls. If the M value
corresponds to a part of the line with constant m values, then
the center point of this constant m value portion will be
returned.
The simplification MUST be applied prior to transforming geometries,
or the precalculated simplification tolerance will no be correct
and may be excessive (eg when the simplification tolerance
was calculated for a map in meters, yet the rendered layer is
in degrees -- in this case we would simplify the inverted geometry
with a tolerance of ~1 degree!)
Ensure that we apply the simplification FIRST, then transform,
and disable further simplification when rendering the calculated
inverted feature. This is also a performance boost, because we
are simplifying geometries prior to transforming + calculating
the inversion, so usually end up with a lot less vertices
to handle in those operations...
When a picture annotation item is set to the fixed size mode,
and has a callout anchor set, always place the annotation itself
at a fixed offset from the callout anchor. This mimics the
behavior of the old SVG annotation decoration.
Allows rendering a marker symbol below the endpoint of the balloon
callout. Designed to allow balloon callouts to reproduce the same
visual appearance as the older annotation framework items.
Allows creating of callout lines (or bubble callouts) which
link the text to a map location. To create a callout, users
select the text item and then drag out the central x node
to the desired callout end point.
Callout styles can be modified through the layer styling panel.
Adds a new "Linked layer" setting to the render page for annotation
layers, which allows users to optionally set a linked visibility
layer for the annotation layer. If set, then the annotations will
only be drawn when the linked layer is visible in the map.
This is designed to mimic the similar linked layer option for
the older annotation framework, in order to close the feature
gap between old vs new annotations
Refs https://github.com/qgis/QGIS-Enhancement-Proposals/issues/269
This adds a new annotation item type for rendering paragraphs
of text inside a rectangle
Options are present for:
- Text format
- Horizontal and vertical alignment
- Margins
- Background and frame symbol
Makes the API more flexible for future use. We only expose a single
tolerance value in the UI, but in future we could expose the
separate tolerances if desired (but be wary of UI bloat!!)
Allows pixels with color components just outside of the specified
RGB values to also be treated as transparent pixels
Useful for photographs or compressed rasters where a range of color
values must be made transparent
