amCharts & amMap blog

We’ve released a service release for amCharts Bundle for WPF. This release addresses the following issues:

• BUGFIX: SerialChart (line, column, etc.): when Series changed chart wasn’t automatically redrawn requiring developers to manually initiate Refresh
• BUGFIX: PieChart: when there were more than 1 slice but only one had value greater than 0, the slice wasn’t rendered properly.
• BUGFIX: ColumnChart: resizing of data-bound column chart sometimes resulted in halo effect
• BUGFIX: LineChart: when bound graph data contained data points with null or NaN values the graph wasn’t rendered properly.
• BUGFIX: XyChart: when X or Y of data points (or underlying objects) were not set, bullets were rendered in wrong places (lines not drawn at all)

Download amCharts Bundle for WPF v.1.1.5

We’ve released version 1.0.1 of amCharts Stock Chart for WPF which includes a number of bug fixes.

Downoald amCharts Stock Chart for WPF.

Here’s a change log:

• BUGFIX: Graph.LegendPeriodItemType didn’t work properly when set to ValueChange or PercentChange
• BUGFIX: when adding first DataSet via code an exception was thrown.
• BUGFIX: when there were no graphs associated with value axis on load, the axis wasn’t implicitly created later when the graph was added from code.
• BUGFIX: in some scenarios first available data item wasn’t shown when zooming out
• BUGFIX: sometimes values 00:00:00 were randomly displayed on DateTimeAxis.
• BUGFIX: PercentChange in Legend wasn’t properly updated for Period legend items
• BUGFIX: when real data precision was hour, minute, second or millisecond an exception was generated

On October 16, 2009 Firefox team has added WPF plug-in to the plug-in blocklist effectively disabling all the XBAP WPF applications in Firefox. The block is due to recently discovered vulnerability. At this point it’s unclear for how long this block is going to be in effect.

amCharts for WPF demonstrations on this site utilize the above mentioned XBAP WPF technology and are therefore affected by this block. In case you can’t open the demonstrations in Firefox, you should try them with Internet Explorer.

We’ve published a release candidate of amCharts Stock Chart for WPF. This release features a handful of new features and bug fixes (see complete change log below). We’ve also added 5 more samples to the stock chart demo to showcase some of the features and possibilities stock chart opens. As usual you can use all amCharts products for free under linkware license.

Download amCharts Stock Chart for WPF.

Check out Stock Chart for WPF demo.

Don’t forget that through the month of October 2009 we are running a 50% discount on Stock Chart licenses. Click here for details.

amCharts Stock Chart v.1.0 Release Candidate change log:

• FEATURE ADDED: Graph now has a ComparisonDataField property allowing to specify different DataField property for comparison graph than the one set on main graph
• FEATURE ADDED: graphs can now be turned off and on by clicking on the key in the legend
• FEATURE ADDED: InactiveGraphOpacity property added to Legend. If you set it to a value less than 1 when user hovers over the legend entry, corresponding graph is highlighted by fading all other graphs to specified opacity.
• FEATURE ADDED: AutoSkipValues property added to Scroller allowing scroller graphs to skip values if there are much more data items than width of the scroller. This allows displaying of large datasets. The default is true.
• FEATURE ADDED: clicking in unselected portion of scroller now scrolls to the specified position
• FEATURE ADDED: EventBullets collections added to both Chart and Graph to hold custom (non-dataset) events (bullets).
• FEATURE ADDED: OnAxis property added to EventBullet class to specify if bullet should be drawn on x-axis independently of it’s or graph’s value. Chart.EventBulletOnAxis property controls global setting.
• OPTIMIZATION: dramatically improved performance when IsEquallySpaced is set to true
• BREAKING CHANGE: changed IsEquallySpaced property default to true (was false)
• IMPROVEMENT: cursor bullet now snaps to the closest available data item when hovering over gap in data
• COSMETIC IMPROVEMENT: thumbs on scroller show up only when the mouse is over it
• BUGFIX: When IsEquallySpacde was set to true, Step and StepNoRisers graphs where drawn incorrectly when data wasn’t continuous
• BUGFIX: when IsEquallySpaced was set to true, vertical grid wasn’t rendered properly
• BUGFIX: when hovering over charting area active data item was set to the left of the cursor (not the closest item)
• BUGFIX: non main data set graphs where drawn incorrectly or not drawn at all when IsEquallySpaced was set to true
• BUGFIX: CountHint on LeftValueAxisGrid wasn’t honored.
• BUGFIX: when dataset was selected for comparison charts where not immediately rescaled
• BUGFIX: Ohlc PeriodItemType in Legend didn’t work as expected with non-ohlc graphs
• BUGFIX: Legend settings where not propagated from main graph to comparison graphs
• BUGFIX: in comparison mode first drawn point was used as base value even though it is most often one item to the left of first visible item. Now first really visible item is used.
• BUGFIX: binding of ItemsSource on DataSet objects didn’t work

Version 1.1.4 of amCharts Bundle for WPF has been released. Here’s a list of changes:

• FEATURE ADDED: XyChart: add MaxZoomFactor property – gets or sets maximum allowed zooming factor for the chart.
• BUGFIX: PieChart: when frequently updated PieChart was running for multiple hours or even days it sometimes generated an exception.
• BUGFIX: SerialChart (line, column, etc): when there was only a single data item CategoryAxis (x-axis) value wasn’t displayed and ColumnWidthAllocation wasn’t honored
• BUGFIX: XyChart: when no selection was made (single click on charting area) the chart was zooming to an empty area
• BUGFIX: SerialChart (column, line, etc.): when zoomed in and Series changed and didn’t contain items with same id as current zoom starting and ending points, out of range exception was thrown. Now the chart zooms out.

Download amCharts Bundle for WPF v.1.1.4

We are happy to announce the release of our financial charting product – amCharts Stock Chart for WPF.

Stock Chart’s main purpose is to display financial charts. However, it can also be used to visualize any date-based data. Line, column, candlestick, OHLC, step line and area – all these types of charts can be displayed with this control. Stock Chart section of our site contains details on most of the advanced features of this control.

See it in action in the demo and/or download it and add advanced financial charting component to your WPF application.

The Stock Chart is released under the same licensing scheme as all amCharts products: fully functional “linkware” version is available FREE of charge even for commercial projects, commercial (link-free) licenses are available too.

To celebrate the release of amCharts Stock Chart for WPF we are running a special promotion until the end of October, 2009. Enter coupon code stock910 when checking out and you will get 50% discount of any commercial Stock Chart license.

We have just released version 1.1.3 of amCharts charting controls for WPF. This release includes following bug fixes:

• BUGFIX: PieChart: when Brush property was databound rendered brush didn’t change even when underlying data changed
• BUGFIX: SerialChart (line, column, etc.): Guide titles weren’t rendered properly in some scenarios
• BUGFIX: SerialChart (line, column, etc.): databound graphs added from code were not displayed properly (add graph to the chart before setting binding properties)
• BUGFIX: ColumnChart: graphs with more than 140 columns caused rendering issues
• BUGFIX: XyChart: bulleted graphs with more than 140 items caused an infinite loop
• BUGFIX: LineChart: Balloon horizontal placing algorithm wasn’t taking balloon size into account when deciding whether to show balloon on the left or right of indicator.

Download amCharts for WPF

We have just released version 1.1.2 of amCharts bundle for WPF. This is mostly a service release. It addresses several issues discovered and reported after the 1.1.1 was released. Here is a complete change log:

• FEATURE ADDED: ColumnChart: added RefreshAndAnimate() method which causes the chart to redraw itself and re-launch startup animation afterwards.
• BUGFIX: all charts: when data source property (DataItemsSource, SeriesSource, SlicesSource, etc.) was set or bound to a collection implementing INotifyCollectionChanged interface (ObservableCollection, etc.) CollectionChanged event handler was never unhooked even if the property was set to other collection or null.
• BUGFIX: all charts: declaration of Legend.PositionProperty contained a mistype preventing use of Position property in style declarations, etc.
• BUGFIX: Serial charts (line, column, etc.): NullReferenceException was thrown when adding data-bound graph from code.
• BUGFIX: PieChart: data binding via XAML didn’t work as expected

Download amCharts for WPF 1.1.2 here