topic Thematic Map Widget not working? in ArcGIS Viewer for Flex Questions

Thematic Map Widget not working?

FranciscoCaldeira — Tue, 21 Aug 2012 14:39:49 GMT

It looks like the thematic Map widget is not working in Arcgis Flex version 3.0. When I click on a feature I should be able to see a infowindow insteed of this error message.

http://resources.arcgis.com/en/help/flex-viewer/live/index.html?config=apps/config-thematic.xml

TypeError: Error #1009: Cannot access a property or method of a null object reference.
at mx.charts.chartClasses::ChartBase/initStyles()
at mx.charts.chartClasses::ChartBase/set moduleFactory()
at mx.charts.chartClasses::CartesianChart/set moduleFactory()
at mx.charts::ColumnChart/set moduleFactory()
at mx.core::UIComponent/http://www.adobe.com/2006/flex/mx/internal::addingChild()
at mx.core::Container/http://www.adobe.com/2006/flex/mx/internal::addingChild()
at mx.core::Container/addChildAt()
at mx.core::Container/addChild()
at mx.core::Container/createComponentFromDescriptor()
at mx.core::Container/createComponentsFromDescriptors()
at mx.core::Container/createChildren()
at mx.core::UIComponent/initialize()
at mx.core::Container/initialize()
at mx.core::UIComponent/http://www.adobe.com/2006/flex/mx/internal::childAdded()
at mx.core::UIComponent/addChildAt()
at spark.components::Group/addDisplayObjectToDisplayList()
at spark.components::Group/http://www.adobe.com/2006/flex/mx/internal::elementAdded()
at spark.components::Group/setMXMLContent()
at spark.components::Group/createChildren()
at mx.core::UIComponent/initialize()
at mx.core::UIComponent/http://www.adobe.com/2006/flex/mx/internal::childAdded()
at mx.core::Container/http://www.adobe.com/2006/flex/mx/internal::childAdded()
at mx.core::Container/addChildAt()
at mx.core::Container/addChild()
at mx.core::Container/createComponentFromDescriptor()
at mx.core::Container/createComponentsFromDescriptors()
at mx.core::Container/createChildren()
at mx.core::UIComponent/initialize()
at mx.core::Container/initialize()
at widgets.Samples.ThematicQuery::InfoColumnChartWidget/initialize()
at mx.core::UIComponent/http://www.adobe.com/2006/flex/mx/internal::childAdded()
at mx.core::UIComponent/addChildAt()
at spark.components::Group/addDisplayObjectToDisplayList()
at spark.components::Group/http://www.adobe.com/2006/flex/mx/internal::elementAdded()
at spark.components::Group/addElementAt()
at spark.components::Group/addElement()
at com.esri.ags.components.supportClasses::InfoWindow/commitProperties()
at mx.core::UIComponent/validateProperties()
at mx.managers::LayoutManager/validateProperties()
at mx.managers::LayoutManager/doPhasedInstantiation()
at mx.managers::LayoutManager/doPhasedInstantiationCallback()

I'm using this Widget in a custom aplication but I'm experiencing the same problem. Is it just me or anyone noticed the same problem?

Kind regards
Francisco Caldeira

Re: Thematic Map Widget not working?

RobertScheitlin__GISP — Tue, 21 Aug 2012 14:54:51 GMT

Francisco,

You are not the only one seeing this. Maybe the viewer team will see this and get it fixed for the next release.

Re: Thematic Map Widget not working?

MehulChoksey — Fri, 10 Dec 2021 20:33:19 GMT

Thanks for reporting this. Following workaround (for flex sdk 4.6 regression) will be added in the next release of the viewer..

Add to InfoColumnChartWidget.mxml following funtions:

private function basewidget_preinitializeHandler(event:FlexEvent):void
            {
                // work-around for 4.6 regression
                copyStyleFromParent("mx.charts.chartClasses.ChartBase");
                copyStyleFromParent("mx.charts.chartClasses.CartesianChart");
                copyStyleFromParent("mx.charts.chartClasses.PolarChart");
                copyStyleFromParent("mx.charts.BarChart");
                copyStyleFromParent("mx.charts.ColumnChart");
                copyStyleFromParent("mx.charts.LineChart");
                copyStyleFromParent("mx.charts.PieChart");
                copyStyleFromParent("mx.charts.AxisRenderer");
                copyStyleFromParent(".blockCategoryAxis");
                copyStyleFromParent(".blockNumericAxis");
                copyStyleFromParent(".linedNumericAxis");
                copyStyleFromParent(".dashedNumericAxis");
                copyStyleFromParent(".dashedCategoryAxis");
                copyStyleFromParent(".hangingCategoryAxis");
                copyStyleFromParent("mx.charts.GridLines");
                copyStyleFromParent(".horizontalGridLines");
                copyStyleFromParent("mx.charts.series.BarSeries");
                copyStyleFromParent("mx.charts.series.ColumnSeries");
                copyStyleFromParent("mx.charts.series.LineSeries");
                copyStyleFromParent("mx.charts.series.PieSeries");
            }
            
            private function copyStyleFromParent(selector:String):void
            {
                var chartBaseStyle:CSSStyleDeclaration = styleManager.getStyleDeclaration(selector);
                if (!chartBaseStyle && styleManager.parent)
                {
                    var parentStyle:CSSStyleDeclaration = styleManager.parent.getStyleDeclaration(selector);
                    if (parentStyle)
                    {
                        styleManager.setStyleDeclaration(selector, parentStyle, false);
                    }
                }
            }

and update following:

<viewer:BaseWidget xmlns:fx="http://ns.adobe.com/mxml/2009"
                   xmlns:s="library://ns.adobe.com/flex/spark"
                   xmlns:mx="library://ns.adobe.com/flex/mx"
                   xmlns:viewer="com.esri.viewer.*"
                   creationComplete="init()"
                   preinitialize="basewidget_preinitializeHandler(event)"
                   implements="com.esri.viewer.IInfowindowTemplate">

Re: Thematic Map Widget not working?

MehrshadNourani — Tue, 15 Jan 2013 13:50:42 GMT

Hello,

Is there a new release available for Thematic Map Widget?
Thanks,
Mehrshad

Re: Thematic Map Widget not working?

BjornSvensson — Tue, 15 Jan 2013 15:06:32 GMT

Is there a new release available for Thematic Map Widget?

It is still available as a sample:
https://github.com/Esri/arcgis-viewer-flex/tree/master/src/widgets/Samples/ThematicQuery