amCharts & amMap blog

We have just released version 1.3 of amCharts Stock Chart for WPF & Silverlight. This version focuses on data grouping improvements. Several intermediate grouping points were added to make grouping switching smoother in time range.

Note: if you’ve used DataGroupingInterval enumeration explicitly in your code make sure to recompile your project against new dll and verify that your code is working properly.

Download amCharts Stock Chart for WPF & Silverlight

Here’s a complete change log:

• FEATURE ADDED: added more DataGroupingInterval values for smoother grouping in "time" range. NOTE: if your code used DataGroupingInterval enum directly make sure everything works as expected since values were inserted between other values.
• FEATURE ADDED: added StockChart.MinimumDataGroupingInterval and MaximumDataGroupingInterval properties to constrain automatic data grouping interval switching
• COSMETIC IMPROVEMENT: when Brush is set on Candlestick graph, the value is used for candle outline.
• BUGFIX: in some scenarios it wasn’t possible to modify control template under Silverlight
• BUGFIX: in some scenarios ArgumentOutOfRangeException was thrown when hovering over an empty chart.
• BUGFIX: in some cases exception was thrown when hovering over an empty chart plot area
• BUGFIX: Collapsing and showing charts (using Chart.Collapse()/Show() methods) sometimes resulted in charts overlapping
• BUGFIX: in Raw (milliseconds) mode Value field data was used instead of Volume
• BUGFIX: when ArrowUp bullet was set on axis it wasn’t visible
• COSMETIC FIX: mouse cursor wasn’t returning to regular Arrow after mouse was released after dragging/scrolling the chart.

We’ve released version 1.2.1 of amCharts Stock Chart for WPF and Silverlight. This release addresses a number of issues reported by the users since 1.2 release.

Download Stock Chart v.1.2.1

Here’s a complete change log:

• COSMETIC IMPROVEMENT: it’s now possible to set brush for scroller values by setting Foreground property on the scroller.
• BUGFIX: Sometimes exception was thrown when rendering filled areas in Silverlight
• BUGFIX: exception was thrown in design-mode in Silverlight version.
• BUGFIX: dragging scroller thumb to the right fast expanded selection dramatically
• BUGFIX: NullReferenceException when removing all DataSets

A new release of Stock Chart for WPF and Silverlight is available for immediated download. The main addition in this release is a graph stacking feature allowing you to stack multiple single value graphs (line, area, step, column) on top of each other. Regular and 100% stacking are supported.

Download amCharts Stock Chart for WPF and Silverlight

Here’s a complete change log:

• FEATURE ADDED: Stacking of single value graphs. Added AxisType property to ValueAxis class, It can be set to Linear (default), Stacked or Stacked100Percent. All graphs assigned to this axis should be of the single value type (use another axis for Ohlc or CandleStick graphs). Gapped graphs may produce unexpected results.
• FEATURE ADDED: added Chart.Collapse() and Chart.Show() methods to hide/show individual charts in stock chart and re-layout other charts.
• BUGFIX: "’NaN’ is not a valid value for property ‘Y1′." exception was thrown at design-time.
• BUGFIX: NullReferenceException was thrown when mouse was over the chart and new Chart objects were added to stock chart
• BUGFIX: combination of Graph.ConnectOverGaps = false and Chart.IsDataGroupingEnabled = false resulted in a graph with invisible line.
• BUGFIX: Scroller was not updated when data set ItemsSource changed.
• BUGFIX: custom Chart and Graph level EventBullets were not visually removed when removing them from EventBullets collection.
• BUGFIX: Charts weren’t showing up in Out-of-Browser mode in Silverlight.
• BUGFIX: Silverlight version: zooming in deep on line graphs with points spread far apart sometimes resulted in ghost lines appearing on the chart.
• BUGFIX: Removing Chart for StockChart.Charts collection resulted in null reference exception
• BUGFIX: Data grouping was never switching to Raw (milliseconds) mode.

We have just released version 1.1.6 of amCharts Bundle for WPF. This is a maintenance release addressing a number of issues and adding a couple of minor features.

Download amCharts Bundle for WPF v.1.1.6

Don’t forget that we are running a 1 year anniversary promotion on all of our WPF & Silverlight products. Click here for details.

Here’s a change log for this release:

• FEATURE ADDED: ColumnChart: added MaximumColumnWidth property to set a limit on column width.
• FEATURE ADDED: ColumnChart: added LabelTextWrapping property to control text wrapping in data labels. The default is Wrap.
• PERFORMANCE IMPROVEMENT: XyChart: invisible lines are no longer rendered when chart is zoomed in
• BUGFIX: ColumnChart: it wasn’t possible to select last column for zooming in.
• BUGFIX: XyChart: scrollbars moved chart in the wrong direction when axes were reversed (IsReverse = true)
• BUGFIX: XyChart: graphs were not automatically refreshed when adding data points
• BUGFIX: XyChart: zooming didn’t work as expected when axes were reversed (IsReverse = true)

We have just released a first public beta of our new product – amCharts Quick Charts for WPF & Silverlight. It’s a free and open source charting control set for both Silverlight and WPF.

Quick Charts motto is: Ease of Use, Speed, Small Footprint. It is amCharts Bundle’s little brother. It has less features, but concentrates on what’s important for the majority of users. In order to achieve this we didn’t just strip the features off of amCharts Bundle, but created Quick Charts from scratch.

Current release supports line and column charts only. Support for other chart types coming soon.

Download amCharts Quick Charts for WPF & Silverlight.

We’ve used a different licensing scheme for our WPF & Silverlight charts than for other products. According to feedback from several prospective customers, this created a lot of confusion. So, by popular demand, we’ve decided to unify licensing scheme across all products.

From now on in addition to free linkware license these license types are available for amCharts WPF & Silverlight products:

• Single application license – for use in a single non-redistributable application or web site you’ve developed for yourself or your client;
• Multiple applications license – for use in multiple non-redistributable applications or web sites you’ve developed for yourself or your clients;
• Developer (OEM) license – for use in redistributable applications. Includes access to source code.

Previous licenses will be honored for as long as they are valid and upgrade options for future major version updates will be offered.

Don’t forget that you can still get Stock Chart licenses with 30% discount. The offer expires really soon (within 1-2 weeks).

If you have any questions about this licensing change, licensing in general or any other non-technical inquiries about our WPF & Silverlight products, feel free to contact us at net@amcharts.com.

Release Candidate for version 1.1 of amCharts Stock Chart for WPF & Silverlight has just been posted. This release includes a number of bug fixes and improvements along with a couple minor new features. Based on your feedback we’ve added customization settings for mouse wheel scrolling and zooming feature, column graph can now display negative and positive values using PositiveBrush/NegativeBrush settings and more. See the complete change log below for details.

Download amCharts Stock Chart for WPF & Silverlight

This is most likely the last release before we ship a final 1.1 version, so it’s the last 1-2 weeks when you are able to take advantage of the 30% discount on Stock Chart licenses. Details are on the “buy” page.

Here’s a complete change log:

• FEATURE ADDED: added settings to customize mouse wheel scrolling and zooming: ScrollModifierKeys, ZoomModifierKeys, AcceleratedWheelModifierKeys and AcceleratedWheelFactor.
• FEATURE ADDED: added Graph.UsePositiveNegativeBrushForColumns property which when set to true makes column graph use PositiveBrush/NegativeBrush for columns instead of Fill/Stroke
• FEATURE ADDED: when zooming out and GraphHighlight event bullet becomes virtually invisible, it’s displayed as VerticalLine
• PERFORMANCE IMPROVEMENT: changes to data in Legend caused graph redraws
• BUGFIX: Scroller thumb wasn’t redrawn/placed properly when chart size was reduced
• BUGFIX: EventBullets were not stacking properly when different bullet types were stacked together
• BUGFIX: exceptions were thrown when attempting to display event bullets on a chart with no graphs
• BUGFIX: when current grouping interval stepped over EventBulletThresholdPeriod currently visible bullets were not removed
• BUGFIX: Silverlight version: some usage scenarios caused infinite layout loops
• COSMETIC IMPROVEMENT: EventBullet balloons show ToDate in GraphHighlight and VerticalBand bullet balloons, containers for missing data in balloons are collapsed, if there’s no data to show in the balloon, balloons is not displayed.