NChart3D Changelog

v3.3

  • Support of VoiceOver accessibility features in iOS
  • Support of TalkBack accessibility features in Android
  • Uniform gradient for column chart
  • Improvements for value axis labels alignment


v3.2

  • New format of the framework (xcframework); please see this blog post for migration details


v3.1.3

  • Fix for Mac Catalyst


v3.1.2

  • Fix for Metal support


v3.1.1

  • Fix for Mac Catalyst


v3.1

  • Support of Mac Catalyst


v3.0.1

  • Fix for brush scale color in Android


v3.0

  • Metal rendering backend for iOS and macOS
  • Data smoother improvements to make it compatible with the streaming mode
  • API to move coordinate planes
  • API to freeze the level of details on the value axes
  • Bugfixes and improvements


v2.16

  • Horizontal brush scale legend support
  • Optional grouping of positive and negative values in additive axis mode
  • macOS Catalina related issues corrected


v2.15

  • NChart3D for Android: support of ARM64
  • Gradient legend
  • Column series improvements:
    • API to set thickness of columns in chart coordinates
    • API snap the columns' bottom to the axis minimum rather than to zero
  • API to flip value axis caption
  • Minor bugfixes
  • Deprecation of labelsAlignment property of value axis


v2.14

  • Range selector
  • Data smoother for surface series
  • Improvement of bubble and surface series rendering
  • Support of tooltips in surface series
  • API to switch point selection on/off in series
  • Fixes for gradient brush scale
  • Separated handling of chart and legend interactions
  • Migrating iOS and macOS samples to ARC


v2.13

  • NChart3D NuGet package released
  • Minor bugfixes


v2.12

  • Static lines: stationary lines drawn across the chart in given position and API to query chart values under them
  • API to override global value axes mode for certain series
  • API to switch off legend interactions
  • API to flip value axes
  • API to stop the chart at its center
  • Improvement of surface drawing: gaps filling algorithm
  • Improvement of brush scale in area series


v2.11

  • Introducing NChart3D for tvOS
  • Improvement of series Z-order in 2D mode
  • Minor bugfixes


v2.10.1

  • Support of Swift 4 in NChart3D for iOS and macOS


v2.10

  • Support of 4D values displayed by surface (X, Y, Z mapped to the shape of surface and W mapped to its color via color scale)
  • API to switch off default restriction of rotation around X-axis in 3D mode
  • Improvements of:
    • Heatmap and surface visual quality when color scales are used
    • Auto scrolling mechanism
    • Data extending mechanism
    • Auto fitting of chart
    • Value axes auto layout
    • Axes marks auto layout
    • Tooltips auto layout
    • Time axis auto layout
    • 3x content scale support


v2.9.1

  • Small bugfixes for Xamarin binding


v2.9

  • Discontinuous axes based on axes marks
  • Improvement of axes marks layout
  • Analytical tools:
    • Peak detection based on moving average
    • Trend line calculation based on OLS
  • API to make a perpetual rotation
  • Bugfixes for screen content scale switching
  • Multithreading stability improvement


v2.8.1

  • Fixes in NChart3D for iOS related to the new version of Swift
  • API to get frames of legend and time axis
  • Small bugfixes and memory management improvements


v2.8

  • API for saving screenshot to file in NChart3D for UWP
  • API to catch zoom changes
  • Memory usage optimizations
  • AudioQueue instead of AVCaptureSession in microphone streaming example of iOS demo app


v2.7.1

  • Fix of the NChart3D for UWP crashing on the ARM architecture


v2.7

  • New flexible API to control axes intersection
  • API to position callout in the arbitrary place of plot area
  • Ticks are always on the axis now


v2.6

  • Tiny ticks
  • Minor and tiny grids
  • Logarithmic mode for axes
  • Dash for axis line, grid line, crosshair lines and line series
  • Transparent background


v2.5

  • Release of NChart3D for Windows (UWP)
  • Brush scale legend
  • Improved support of brush scale in surface series
  • Bugfixes, improvements and optimizations


v2.4

  • More clear chart rotation API
  • Fix for the 3D and 2D interactive chart rotation
  • Minor fixes for grid and labels drawing in the polar coordinate system
  • Fix for chart rendering in iOS demo application after unlocking the device
  • Support of Slide Over and Split View modes in iOS demo
  • Improved algorithm for dealing with fonts
  • Mechanism to update a crosshair without redrawing the whole chart
  • Other bug fixes and stability improvements


v2.3.2

  • Support for new Xamarin version
  • An updated zoom mechanism
  • macOS resize bug fix
  • Line series and area series display fixes for 65K+ points
  • Bugfixes, improvements and optimizations


v2.3.1

  • Bugfixes, improvements and optimizations


v2.3

  • Value axis delegate to handle tapping the labels of axes ticks
  • Bugfixes and improvements


v2.2.1

  • Improvement of compatibility with old Android-based devices that have limited graphics capabilities
  • Fixes of axes ticks handling algorithm
  • Improvements of transparency support
  • Bugfixes and improvements


v2.2

  • Touch area series
  • Improvement of axis' ticks grouping algorithm
  • Memory optimizations
  • Bugfixes and improvements


v2.1.2

  • Bugfixes and improvements


v2.1.1

  • Android and Xamarin related fixes
  • iOS Bitcode support fix
  • Fixes for line and bubble series working with date/time axis
  • Small core improvements


v2.1

  • Handling of clicks on the entries in legend
  • Lagrange data smoother
  • Improvement of data smoother based on Bezier curve with control points calculated according to tangents to the curve being smoothed
  • Value axis mode to display date and time, support of chart points with date and time values
  • New Android view based on TextureView (NChartTextureView) that allows seamless work within complex containers like ScrollView
  • Option to hide horizontal lines of candlestick series shadows
  • Support of interlaced background
  • Thread safety improvements
  • Support of Bitcode for iOS
  • Support of Swift 2
  • Bugfixes and optimizations


v2.0

  • Real-time data appending as a part of streaming mode
  • Option to scroll to the newly appended data automatically
  • Option to zoom the chart automatically after scrolling
  • Marks on axes to highlight some values
  • Automatic calculation of optimal zoom for big chart point numbers
  • Customizable intersection point of the axes
  • A mode to keep chart markers the same size regardless of the zoom
  • Fix for crosshair tooltip position
  • Improvement of line drawing mechanism
  • Improvement of value axes drawing mechanism
  • Improvement of callouts:
    • Better work with pie series
    • Different callout line types
  • Support of C++11
  • Fix for using NChart3D with Objective-C++
  • Refactoring of data smoothers. Now there are 3 different smoothers available:
    • Based on classical defect 1 cubic spline
    • Based on cubic Bezier curve with control points calculated to ensure defect 1 of the spline
    • Based on cubic Bezier curve with control points calculated according to tangents to the curve being smoothed
  • Bugfixes, improvements and optimizations


v1.15

  • Android related fixes
  • Method to change the default arrow orientation of tooltips


v1.14

  • Memory management fixes for Android


v1.13

  • Memory management improvements
  • Bugfixes


v1.12

  • Method to set legend handler images
  • Improvement of the code sample demonstrating different chart types
  • Bugfixes


v1.11.3

  • Fix for background gradient


v1.11.2

  • Ability to set marker touch area separately from marker size
  • Bugfixes and improvements


v1.11.1

  • Bugfixes


v1.11

  • Update for EULA to reflect the conditions of maintenance and support


v1.10

  • NChart3D public API:
    • Chart delegate is revised
    • Android API:
      • Names of interfaces are changed
      • All enums are moved to global namespace
      • Names of some methods are changed
    • Xamarin.iOS API:
      • Names of interface methods are changed
      • Constructors of brushes and points are changed
  • NChart3D core:
    • Marker size is now interpreted in pixels if no size axis data source given
    • Bevel effect for pie
    • Rounded corners for columns and bars
    • Draggable crosshair with tooltip and image
    • Bugfixes and improvements


v1.9.1

  • Bugfixes and improvements


v1.9

  • New demo for iOS with real data completed (iPhone + iPad)
  • Bugfixes


v1.8.2

  • Bugfixes


v1.8.1

  • Export charts to images in Android and OSX versions
  • Bugfixes and improvements


v1.8

  • Time axis can be used with all series types
  • New animations for column and line series
  • Crosshair
  • Export charts to images or CGContext in iOS version
  • Line break mode for axis labels
  • Options to control center of axis labels
  • Options to control default angles in 3D mode
  • New demo app for iPad with real data
  • Support of the Xamarin Unified API (however the Classic API is still supported too)
  • Improvements of user interactions control
  • Better layout of time axis
  • Improvement of the area series look
  • Bugfixes


v1.7.1

  • Fixes for iOS 8
  • Support of Swift
  • Bugfixes and improvements


v1.7

  • Release of NChart3D for Android
  • Release of NChart3D Xamarin Binding for Android
  • NChart3D Xamarin Binding for iOS API change: data sources and delegates are now interfaces, not classes
  • Bugfixes and improvements


v1.6

  • Heatmap chart type
  • Brush scale that maps values from points to given brushes
  • Improvements of radar chart
  • Improvements of multithreading
  • Small bubbles in bubble series remain accessible when overlapped by bigger ones
  • Line break mode for legend's entries
  • API change: NChartMarker is now a part of NChartPointState (previously NChartPointState was inherited from NChartMarker)
  • Memory usage optimizations
  • Bugfixes


v1.5.8

  • Fix for empty series names


v1.5.7

  • Text alignment for labels and tooltips
  • Fix for legend content alignment


v1.5.6

  • Fix for tooltip padding
  • Fix for Xamarin Binding


v1.5.5

  • Fix for tooltips in bubble series


v1.5.4

  • Fix for line thickness


v1.5.3

  • Fix for tooltip margin


v1.5.2

  • Fix for pie rotation
  • Fix for legend


v1.5.1

  • Fix for point selection


v1.5

  • Release of NChart3D for OS X
  • Bugfixes and improvements


v1.4.3

  • Fill ratio for column groups
  • Fix for iOS 8
  • Minor bugfixes


v1.4.2

  • Fix for no data


v1.4.1

  • Funnel chart type
  • Column grouping option
  • Improvement of axes labels rotation
  • Control over chart's pivot
  • Bugfixes


v1.4

  • Spline-based data smoothing
  • Radar chart type


v1.3.8

  • Fixes of legend


v1.3.7

  • Rotation of axes labels


v1.3.6

  • Alignment of chart caption


v1.3.5

  • Bugfixes for arm64


v1.3.4

  • Bugfixes


v1.3.3

  • Improvement of rendering thread management


v1.3.2

  • Fix of crash by deleting NChartView


v1.3.1

  • Fix for user interactions control


v1.3

  • Streaming: realtime data updating. It is demonstrated in the AppStore demo as a microphone spectrum visualization
  • Advanced animations for charts
  • Custom chart background image
  • Advanced control over user interactions
  • Interpolators that control animated values
  • Incremental minimum/maximum mode
  • Little refactoring of NChart delegate
  • Delegate method to catch event of animation ending
  • Fixes for size axis and marker sizes
  • Fixes for rotation
  • Support of multithreading
  • New interface of AppStore demo
  • Bugfixes, optimizations and improvements
  • Improvements for the Xamarin API, the types used are now more native


v1.2.10

  • Control shading model in 3D chart


v1.2.9

  • Custom numeric values on the axes


v1.2.8

  • Option for tooltip that lets it leave chart's plot area


v1.2.7

  • Bugfixes


v1.2.6

  • Support of x86_64 architecture that allows to build for 64bit iOS Simulator


v1.2.5

  • Bugfixes


v1.2.4

  • Xamarin support
  • Improvement of surface chart - now gaps in data are supported
  • Bugfixes


v1.2.3

  • Bugfixes


v1.2.2

  • Bugfixes


v1.2.1

  • Bugfixes


v1.2

  • OHLC chart type
  • Band chart type
  • Sequence chart type
  • Step line chart type
  • Scatter chart type
  • Programmable changing of chart zoom with animation, maximal and minimal zoom adjustment
  • Programmable changing of view angles with animation
  • Fit to screen
  • Selection of points (by color and offset)
  • Better animation of line, area and ribbon
  • Markers for line, step line, area and ribbon
  • iPhone demo, better iPhone support
  • Labels for points
  • Ability to change colors of line and ribbon series by setting the brushes for points
  • Refactoring of the global settings for series
  • Label in the center of pie
  • Ability to switch off selection by tap (may be useful to optimize charts by memory and speed of data updating on the huge datasets)
  • Ability to switch between parallel and perspective projection in 3D mode
  • Bugfixes
  • Optimizations


v1.1.1

  • Bugfixes


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