plotters

Plotters core crate update

Improved

• The EvcxR integration now supports bitmap output. (Thanks to @lisanhu)

Fixed

• Fix the plotters crate's edition requirement

Release tag for Plotters 0.3.2 release

Improved

• Surface series now supports more customizations
• Z-orde support for 3D plots
• Allow passing colors by value and reference (thanks to chrisduerr)

Fixed

• Infinite loop / panic when the axis range is zero
• UB in minifb example (thanks to TheEdward162)
• Examples that uses old APIs (thanks to chrisduerr)

This is the next major release of Plotters, see release notes for more details.

Added

• The plotters backend API crate is introduced which allows third-party backend.
• Allow slice used as a coordinate if the item type implements PartialOrd.
• Linspace coordinate type, which allows define a discrete coordinate on continuous value types (such as f32, DateTime, etc) with a step specification
• Nested coordinate type, now we support define pair of category and nested values as nested coordinate.
• Introduce backend crates: plotters-bitmap, plotters-svg, plotters-cairo, plotters-canvas, plotters-console
• 3D Plotting features

Fixed

• Adjust Canvas backend size with DPR (Thanks to Marius-Mueller)

Improvement

• Enhanced key point algorithms: New key point hint trait are used for key point algorithms && many improvement on key point algorithms for different types
• Renamed MeshStyle::line\_style\_1 and MeshStyle::line\_style\_2 to bold\_line\_style and light\_line\_style
• Reorganize the "plotters::coord" namespace
• Improved discrete coordinate trait
• Split backend code into isolated crates and can be maintained indepdendenly
• Category coordinate is now replaced by slice coordinate
• Removing the requirement for Debug trait for chart coordinate, allows ranged coordinate define its own formatting function.

Removed

• The Path name alias for PathElement
• Most code plotters::drawing::backend\_impl::\* (expect MockedBackend for testing purpose) is removed due to crate split.
• Piston backend due to the Piston project seems not actively developing

Plotters 0.2.15 release

Plotters 0.2.14 release

Plotters 0.2.13 release

Added

• BitMapBackend now is able to support different pixel format natively. Check our new minifb demo for details.
• Incremental Rendering by saving the previous chart context into a state and restore it on a different drawing area.
• BoxPlot support (See boxplot example for more details) (Thanks to @nuald)
• Category coordinate spec which allows use a list of given values as coordinate (Thanks to @nuald)
• New text positioning model which allows develvoper specify the anchor point. This is critical for layouting SVG correctly. See plotters::style::text::text_anchor for details. (Thanks to @nuald)

Improved

• Faster bitmap blending algorithm, which is 5x faster than the original one.
• Text alignment improvement, now we can suggest the invariant point by giving TextAlignment to the text style (Thanks to @nauld)
• More controls on features, allows opt in and out series types
• Remove dependency to svg crate, since it doesn't provide more feature than a plain string.

Added

• Add font style support, now we are able to set font variations: normal, oblique, italic or bold.

Improved

• Font description is greatly improved, general font family is supported: serif, serif-sans, monospace (Thanks to @Tatrix)
• Tested the font loading on Linux, OSX and Windowns. Make font loading more reliable.
• BitMapBackend isn't depends on image crate now. Only the image encoding part relies on the image crate
• Refactored WASM demo use ES6 and wasm-pack (Thanks to @Tatrix)
• Label style for X axis and Y axis can be set separately now using x\_label\_style and y\_label\_style. (Thanks to @zhiburt)

Improved

• Refactored and simplified TTF font cache, use RwLock instead of mutex which may benefit for parallel rendering. (Thanks to @Tatrix)

Bug Fix

• The fast bitmap filling algorithm may overflow the framebuffer and cause segfault

Improvement

• Avoid copying image buffer when manipulate the image. (Thanks to @ralfbiedert)
• Bitmap element which allows blit the image to another drawing area.
• Performance improvement: now the bitmap backend is 8 times faster
• Added benchmarks to monitor the performance change

Bug Fix

• Performance fix: '?' operator is very slow
• Dynamic Element lifetime bound: Fix a bug that prevents area series draws on non-static lifetime backend

Added

• Cairo backend, which supports using Plotters draw a GTK surface.
• Allow secondary axis to be configured with different label style.
• Relative Sizing, now font and size can use relative scale: (10).percent\_height() means we want the size is 10% of parent's height.
• Allow the axis overlapping with the plotting area with ChartBuilder::set\_\label\_area\_overlap.
• Allow label area is on the top of the drawing area by setting the label area size to negative (Thanks to @serzhiio).
• Allow configure the tick mark size, when the tick mark size is negative the axis becomes inward (Thanks to @serzhiio).

Bug Fix

• FontError from rusttype isn't Sync and Send. We don't have trait bound to ensure this. (Thanks to @dalance)

Improvement

• New convenient functions: disable_mesh and disable_axes

Added

• GIF Support, now bitmap backend is able to render gif animation

Bug Fix

• Fixed several polygon filling bugs.
• Completely DateTime coordinate system support

Added

• Allowing axis be placed on top or right by setting right_y_label_area and top_x_label_area
• Dual-coord system chart support: Now we are able to attach a secondary coord system to the chart using ChartContext::set_secondary_coord. And draw_secondary_axes to configure the style of secondary axes. Use draw_secondary axis to draw series under the secondary coordinate system.
• Add support for y_label_offset. Previously only X axis label supports offset attribute.
• New label area size API set_label_area_size can be used for all 4 label area
• Added new error bar element
• New axis specification type PartialAxis which allows the partially rendered axis. For example, we can define the chart's axis range as 0..1, but only 0.3..0.7 is rendered on axis. This can be done by (0.0..1.0).partial_axis(0.3..0.7)
• Drawing backend now support fill polygon and introduce polygon element
• Area Chart Support

Improvement

• More examples are included
• Date coordinate now support using monthly or yearly axis. This is useful when plotting some data in monthly or yearly basis.
• Make margin on different side of a chart can be configured separately.
• Better test coverage

Bug Fix

• Key points algorithm for numeric coordinate might not respect the constraint

Improvement

• Add i128 and u128 as coordinate type (Credit to @Geemili)

Bug Fix

• Date coordinate is working for a long time span now

Improvement

• Color system now is based on palette crate (Credit to @Veykril)

Added

• More documentation: a Jupyter interactive notebook of Plotters tutorial
• Add more quadrants to the SeriesLabelPosition (Credit to @wolfjagger).

Improvement

• Histogram improvements, horizontal bar is supported, new creation API which compiler can infer the type
• Supporting split the drawing area with a list of breakpoints using DrawingArea::split_by_breakpoints
• Enable SVG support for WASM
• Make the BitMapBackend takes an in memory mutable buffer

Fix

• Rectangle drawing bug when the axis is reversed

Improvement

• Move the sample images and other documentation data out of this repository.

Fix

• Make drawing errors shareable across threads. Otherwise, it causes compile error in some cases. (Thanks to @rkarp)

Added

• Add relative sizing by added function DrawingArea::relative_to_height and DrawingArea::relative_to_width.
• Added piston backend, now we can render plot on a window and dynamically render the plot

Improved

• Creating drawing area with &Rc<RefCell<DrawingBackend>>. Previously, the drawing area creation requires take over the drawing backend ownership. But sometimes the drawing backend may have additional options. With new API, this can be done by putting the backend drawing area into smart pointers, thus, the drawing backend is accessible after creates the root drawing area.

Added

• Font is now support rotation transformation. Use FontDesc::transform to apply an rotation to transformation. For example, font.transform(FontTransform::Rotate90).
• ChartContext now support drawing axis description. Use MeshStyle::x_desc and MeshStyle::y_desc to specify the axis description text.
• Add series label support. ChartContext::draw_series now returns a struct SeriesAnno that collects the additional information for series labeling. ChartContext::draw_series_labels are used to actually draw the series label. (See examples/chart.rs for detailed examples)
• Mocking drawing backend.
• evcxr Support

Improvement

• Unify OwnedText and Text into Text. Previously, OwnedText and Text are two separate types, one holds a String another holds a &str. Now OwnedText is removed. use Text::new("text".to_string(),...) for owned text element and Text::new("text", ...) for borrowed text.
• Refactor the color representation code, since previously it's heavily relies on the trait object and hard to use
• More test cases

Added

• New abstraction of backend style with BackendStyle trait which should be able to extend easier in the future
• Backend support features, now feature options can be used to control which backend should be supported
• Add new trait IntoDrawingArea, now we can use backend.into_drawing_area() to convert the backend into a raw drawing area
• Now elements support dynamic dispatch, use element.into_dyn() to convert the element into a runtime dispatching element

Improvement

• Improved the overall code quality
• Documentation polish
• Stabilized APIs
• New conversion traits implementations
• Now transparent color is ignored by SVG, bitmap and HTML Canvas backend

Fix

• Changed the open-close pattern to a present function which indicates the end of drawing one frame
• Fix the but that ChartBuilder::title and ChartBuilder::margin cannot be called at the same time && build_ranged now returning a result.