Sum of Attribute in Results

Permanently deleted user

21. Februar 2013 06:57

I have a workflow that selects features based on a reference number.  In the results, there is a field (AREA_HA) that contains each feature's area (in hectares).  Any ideas as to how I can get the workflow to return the total sum of the area values for these selected areas?

Thanks,

Aron

0

• 

  Kevin Penner

  21. Februar 2013 07:33

   

  Hi Aron,   I recently did something similar so I chopped this out for you. You might get an idea of how to do it from this example.   Good Luck! -Kev   <Activity mc:Ignorable="sap sads" x:Class="{x:Null}" sap:VirtualizedContainerService.HintSize="399,821" mva:VisualBasic.Settings="Assembly references and imported namespaces serialized as XML namespaces"  xmlns="http://schemas.microsoft.com/netfx/2009/xaml/activities"  xmlns:eac="clr-namespace:ESRI.ArcGIS.Client;assembly=ESRI.ArcGIS.Client"  xmlns:eacg="clr-namespace:ESRI.ArcGIS.Client.Geometry;assembly=ESRI.ArcGIS.Client"  xmlns:eact="clr-namespace:ESRI.ArcGIS.Client.Tasks;assembly=ESRI.ArcGIS.Client"  xmlns:esri="http://schemas.esri.com/arcgis/client/2009"  xmlns:gce="clr-namespace:Geocortex.Core.Extensions;assembly=Geocortex.Core"  xmlns:gfc="clr-namespace:Geocortex.Forms.Client;assembly=Geocortex.EssentialsWpfApi"  xmlns:gfci="clr-namespace:Geocortex.Forms.Client.Items;assembly=Geocortex.EssentialsWpfApi"  xmlns:gr="clr-namespace:Geocortex.Reporting;assembly=Geocortex.Reporting"  xmlns:gwa="clr-namespace:Geocortex.Workflow.Activities;assembly=Geocortex.Workflow"  xmlns:gwa1="clr-namespace:Geocortex.Workflow.Activities;assembly=Geocortex.Workflow.Activities"  xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"  xmlns:mva="clr-namespace:Microsoft.VisualBasic.Activities;assembly=System.Activities"  xmlns:s="clr-namespace:System;assembly=System.Core"  xmlns:s1="clr-namespace:System;assembly=System"  xmlns:s2="clr-namespace:System;assembly=mscorlib"  xmlns:sa="clr-namespace:System.Activities;assembly=System.Activities"  xmlns:sads="http://schemas.microsoft.com/netfx/2010/xaml/activities/debugger"  xmlns:sap="http://schemas.microsoft.com/netfx/2009/xaml/activities/presentation"  xmlns:scg="clr-namespace:System.Collections.Generic;assembly=mscorlib"  xmlns:sl="clr-namespace:System.Linq;assembly=System.Core"  xmlns:sw="clr-namespace:System.Windows;assembly=WindowsBase"  xmlns:sw1="clr-namespace:System.Windows;assembly=PresentationFramework"  xmlns:sw2="clr-namespace:System.Windows;assembly=PresentationCore"  xmlns:swt="clr-namespace:System.Windows.Threading;assembly=WindowsBase"  xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">   <Sequence sap:VirtualizedContainerService.HintSize="359,741" mva:VisualBasic.Settings="Assembly references and imported namespaces serialized as XML namespaces">     <Sequence.Variables>       <Variable x:TypeArguments="esri:FeatureSet" Name="featureSet" />       <Variable x:TypeArguments="x:Double" Name="sum" />     </Sequence.Variables>     <sap:WorkflowViewStateService.ViewState>       <scg:Dictionary x:TypeArguments="x:String, x:Object">         <x:Boolean x:Key="IsExpanded">True</x:Boolean>       </scg:Dictionary>     </sap:WorkflowViewStateService.ViewState>     <gwa1:QueryTask sap:VirtualizedContainerService.HintSize="337,243" QueryServiceUrl="SomeQuery" Results="[featureSet]" ReturnGeometry="False" SpatialRelationship="esriSpatialRelIntersects" Where="1=1" />     <ForEach x:TypeArguments="esri:Graphic" DisplayName="ForEach&lt;Graphic&gt;" sap:VirtualizedContainerService.HintSize="337,208" Values="[featureSet.features]">       <ActivityAction x:TypeArguments="esri:Graphic">         <ActivityAction.Argument>           <DelegateInArgument x:TypeArguments="esri:Graphic" Name="item" />         </ActivityAction.Argument>         <Assign DisplayName="" sap:VirtualizedContainerService.HintSize="242,60">           <Assign.To>             <OutArgument x:TypeArguments="x:Double">[sum]</OutArgument>           </Assign.To>           <Assign.Value>             <InArgument x:TypeArguments="x:Double">[sum + Double.Parse(item.attributes("AREA_HA").ToString())]</InArgument>           </Assign.Value>         </Assign>       </ActivityAction>     </ForEach>     <gwa1:Alert sap:VirtualizedContainerService.HintSize="337,86" Text="[sum.ToString()]" Title="The Sum" />   </Sequence> </Activity>

  0
• 

  Permanently deleted user

  21. Februar 2013 07:55

  Perfect, that did the trick!  Thanks a bunch Kevin.

  Aron

  0

Bitte melden Sie sich an, um einen Kommentar zu hinterlassen.