Unique graphic for each point

Bryan Lynn

21 Juli 2017 15:58

I need to show the results from a routing task - within a workflow - that returns an optimized route.  I would like to show each point with a numbered symbol.  This is simple task in Esri's JS API but I can't put my finger on how to do it from a workflow in Geocortex.

 

Below is kinda what I am looking for.  Red markers are the order the points were placed.  Purple is the optimized route.

 

Any advice?

 

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  Permanently deleted user

  26 Oktober 2017 23:39

  Hi Bryan, 

   

  I'm not certain if this is there isn't an easier way out there, but I have seen numbered text renderers done like this before:

   

  

  1. Add a new field to your featureset to hold your ordered numbers.  Eg. Add New ESRI.ArcGIS.Client.Field("LABEL", ESRI.ArcGIS.Client.Field.FieldType.String, "Label", Nothing, False, True, 0)
  2. Create a list to hold unique value renderer strings for each feature
  3. Loop through the features in your featureset
  4. Set the value of the field you created in step 1 to a count variable.
  5. Add String.Format(uniqueValueFormat, count) to the uniqueValueRenderers list.  uniqueValueFormat is a variable that contains the skeleton some renderer json "{{""value"":""{0}"",""label"":""{0}"",""description"":""{0}"",""symbol"":{{""type"":""esriTS"",""style"":""esriSLSDash"",""color"":[255,0,25,255],""xoffset"":10,""font"":{{""family"":""Arial"",""size"":12,""style"":""normal"",""weight"":""bold"",""decoration"":""none""}},""text"":""{0}""}}}}"
  6. Increase the counter
  7. Format the rest of the renderer json using String.Format(rendererJsonFormat, String.Join(",", uniqueValueRenderers.ToArray())).  rendererJsonFormat contains: "{{""type"":""uniqueValue"",""field1"":""LABEL"",""field2"":null,""field3"":null,""fieldDelimiter"":"", "",""uniqueValueInfos"":[{0}]}}"
  8. Use UpdateGraphicsLayer to display your featureset using the renderer json.  ESRI.ArcGIS.Client.Renderer.FromJson(rendererJson)

  You can use a second graphics layer to display another symbol with the text label if needed.

   

  Hope that helps!

   

  -Amanda

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  Permanently deleted user

  07 November 2017 15:22

  Thanks Amanda. your solution works!

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  Vipul Soni

  16 Juli 2018 07:44

  Hi,

   

  Please can you share the workflow.

   

  Thanks.

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  Permanently deleted user

  19 Mars 2019 19:21

  Copy the text and use File > New > From Clipboard in Workflow Designer to open it.  This one is just a test, so it queries an arbitrary Airports layer from LA County.  You should be ok to delete or replace the QueryTask when you apply it to your own workflow/featureset.

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