Com a atualização de dezembro do ArcGIS Online, foi introduzida a capacidade de referenciar outras camadas usando Expressões Arcade em Pop-Ups. Este blog vai apresentar um exemplo rápido sobre como criar uma expressão simples de interseção e exibir os resultados em um Pop-Up.<\/P>
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Neste exemplo, usei 4 camadas marcadas como autoritativas no ArcGIS Online por Miami-Dade County, Florida<\/A>. Quero exibir os nomes das Elementary<\/A>, Middle<\/A> e High School <\/A> que intersectam com footprints de edifícios<\/A> em um único pop-up. Tenho três camadas de Limites de Frequência Escolar que identificam um limite escolar específico que se sobrepõe a muitos footprints de edifícios. A camada de footprint do edifício contém informações de geometria, mas nenhuma informação sobre a infraestrutura ou zonas que intersectam com o edifício.<\/P>Este Mapa Web<\/A> mostra exemplos das informações disponíveis nessas camadas em 4 camadas separadas.<\/P><\/P><\/P>Usando a nova funcionalidade Arcade FeatureSet, consegui incluir os nomes das Elementary, Middle e High School no pop-up do footprint do edifício neste mapa web<\/A>. <\/P><\/P><\/P><\/P>Aqui estão os passos para configurar essas expressões simples de interseção em Arcade para incluir em um pop-up.<\/P>Adicione todas as camadas desejadas com as informações que você gostaria de ver a um mapa web<\/A>.<\/P><\/LI>Selecione a camada que deve exibir as informações do pop-up (Footprint do Edifício)<\/P><\/LI>Inspecione as camadas de Limite de Frequência Escolar para identificar os campos que você gostaria de exibir na camada Footprint do Edifício (Nome)<\/P><\/LI>Selecione Configurar Pop up e navegue até o Adicionar Expressões de Atributo<\/A><\/P><\/LI>Crie a expressão para cada camada.<\/P>Crie uma variável que retorne o FeatureSet dos atributos da feição que intersectam.<\/P>var intersectLayer =Intersects<\/A>(FeatureSetByName($map,"Elementary School Attendance Boundary"), $feature)<\/P><\/BLOCKQUOTE>Valores da Expressão Explicados:<\/P>var intersectLayer<\/EM> <\/> <\/> 93 especifica o nome da variável das feições que intersectam<\/><\/><\/><\/><\/><\/><\/><\/><\/><\/><\/><\/><\/><\/><\/><\/><\/><\/><\/><\/><\/><\/><\/><\/><\/> Intersects <\/> 93 especifica a função geométrica onde uma feição intersecta a geometria da outra camada especificada.FeatureSetByName93 Cria um FeatureSet a partir de uma Camada de Feição baseada no seu nome dentro de um mapa ou serviço de feição$map,"Elementary School Attendance Boundary"93 identifica que o conjunto de feições é uma camada chamada Elementary School Attendance Boundary, dentro do mapa web.$featureé a feição que está sendo selecionada na camada Footprint do Edifício que fornece a informação espacial inicial. b. Percorra o conjunto de feições criado e retorne um campo específico do conjunto: for (var f in intersectLayer){ return f.NAME}6. Uma vez que todas as expressões estejam criadas, adicione-as à configuração do pop up.
Este
Usando a nova funcionalidade Arcade FeatureSet, consegui incluir os nomes das Elementary, Middle e High School no pop-up do footprint do edifício neste
Aqui estão os passos para configurar essas expressões simples de interseção em Arcade para incluir em um pop-up.<\/P>
Adicione todas as camadas desejadas com as informações que você gostaria de ver a um
Selecione a camada que deve exibir as informações do pop-up (Footprint do Edifício)<\/P><\/LI>
Inspecione as camadas de Limite de Frequência Escolar para identificar os campos que você gostaria de exibir na camada Footprint do Edifício (Nome)<\/P><\/LI>
Selecione Configurar Pop up e navegue até o
Crie a expressão para cada camada.<\/P>
Crie uma variável que retorne o FeatureSet dos atributos da feição que intersectam.<\/P>
var intersectLayer =
Valores da Expressão Explicados:<\/P>
var intersectLayer<\/EM> <\/> <\/> 93 especifica o nome da variável das feições que intersectam<\/><\/><\/><\/><\/><\/><\/><\/><\/><\/><\/><\/><\/><\/><\/><\/><\/><\/><\/><\/><\/><\/><\/><\/><\/> Intersects <\/> 93 especifica a função geométrica onde uma feição intersecta a geometria da outra camada especificada.FeatureSetByName93 Cria um FeatureSet a partir de uma Camada de Feição baseada no seu nome dentro de um mapa ou serviço de feição$map,"Elementary School Attendance Boundary"93 identifica que o conjunto de feições é uma camada chamada Elementary School Attendance Boundary, dentro do mapa web.$featureé a feição que está sendo selecionada na camada Footprint do Edifício que fornece a informação espacial inicial.
b. Percorra o conjunto de feições criado e retorne um campo específico do conjunto:
for (var f in intersectLayer){ return f.NAME}
6. Uma vez que todas as expressões estejam criadas, adicione-as à
7. Desative os pop ups e potencialmente a visibilidade das Camadas de Limite de Frequência Escolar (Não é obrigatório, mas acho que limpa a exibição,
8.Verifique seu pop up com informações das camadas que intersectam.
Mais documentação, blogs e exemplos serão lançados na próxima semana, mas experimente este exemplo rápido com camadas simples que intersectam e nos avise se tiver dúvidas.
Expressão completa para o nome de uma única high school:
var intersectLayer =Intersects(FeatureSetByName($map,"Elementary School Attendance Boundary"), $feature)for (var f in intersectLayer){ return f.NAME}
Hi Kelly Gerrow ,
Thanks for sharing this blog! Any idea when the online help of ArcGIS Arcade | ArcGIS for Developers will reflect the new features in version 1.5 ? At this moment it is still showing version 1.4 (July):
Hi,
It was just updated. You can find feature set doc here:
Data Functions | ArcGIS for Developers
-Kelly
Great, thank you Kelly!
I'm assuming this isn't available in Portal yet?
John,
That would be No. See this release info link:
About release versions—Portal for ArcGIS | ArcGIS Enterprise
I suspect that this will be included in the March release of ArcGIS 10.7.
Thanks. Just determining a route to proceed with.
Yes, This is planned to be included with the next ArcGIS Enterprise release. (10.7)
Check out this blog by Paul Barker about Feature Sets:
What’s new with Arcade: Taking a stroll through FeatureSets (Part 1)
I just posted another document on these new functions here: https://community.esri.com/docs/DOC-12773-using-featuresetby-functions-in-arcade-to-drill-down-to-other-layers-and-tables
Is it also possible to use the position off the mouseclick instead off $feature within the Intersects function?
I don't think that is possible (at least I haven't seen a functionality exposed in Arcade that does that. Could you explain a little better what you would like to achieve?
Thank you, Xander. I was able to use the negative buffer example you provided in your blog - very helpful! Also, I created an if... else to determine if more than one polygon was intersected and return different expressions.
var buff = Buffer($feature,-10,'feet')var intersectsLayer = Intersects(FeatureSetByName($map,"Zoning"),buff)var intcount = Count(intersectsLayer)var expr = ''if(intcount>1) { expr = 'Multiple regulations apply. Contact appropriate Planning Department.'}else { for(var f in intersectsLayer){ var zone = f.ZONING expr = Proper(zone) }}return expr
You could also return multiple values by iterating and adding to the expression before returning it, but the lack of a new line capability in AGOL makes this unworkable for me.
Hi Heather Widlund ,
Great to hear that you successfully made use of the new Arcade functions! Please post a screenshot of the result.
Actually the "TextFormatting.NewLine" works in the pop-up and you can create a new line for each entry as show below:
The document you referenced Using FeatureSetBy functions in Arcade to drill-down to other layers and tables shows how you can do this.
I was led astray by old documentation, I guess - not the first time. Thanks for the tip! I decided not to do the multiple results for other reasons, but here are my two pop-ups, consisting of two expressions drilling down from one polygon layer to another.
Is it safe to say that this functionality does not work if the web map contains ArcGIS Enterprise "Map Image Layers" (formerly known as ArcGIS Server Dynamic Map Services)? I tried setting it up with those in the web map and I was not able to access the Global "$map" entity. As a result the Arcade Expression does not work. But when I add hosted feature layers from ArcGIS Online to the web map it does work. I also assume this would work with an ArcGIS Enterprise feature layer, but I'll have to wait to test that in the future when we have the on-site Portal set up.
I tried the same thing. It doesn't work with Map Image Layers. I haven't tried it with hosted Enterprise feature layers.
When I attempt to create an expression, similar to the example, I receive this error... Any ideas as to why? AGOL, not portal.
That's the error I got when I tried to use a source that was not a hosted feature layer (it was a map image layer published from ArcGIS Server). It doesn't have an object $map because it's not the right kind of source.
That is also the same error I encountered when I used a map image layer from ArcGIS Server. Error did not happen when using a hosted feature layer from AGOL.
The expression will work for AGS layers if you register the individual layers in your AGS map service as feature layers in AGOL (by their map index number). Then add the registered feature layers to your web map. The globals for $map, $feature, $layer, and $datastore will appear in the expression builder.
Hope that helps
Ned
Hi all,
This is exciting stuff! I'm still fairly new to Arcade. Can anyone tell me if these Arcade Expressions with FeatureSets will work in Collector? If they will work in Collector, will they work in an offline Collector application that has syncing enabled?
I have some end users that could really use some of this functionality to quickly determine some summary info while "disconnected" in the field.
Thanks!
Ken
I just did a small test on Collector (Aurora, iPad) and it seems that there is still not full support for Arcade. I do expect that the new functions will be supported in the future.
I tried this and it did not seem to work for me. Perhaps it is a version issue? I am using a really old AGS stack at the moment (AGS 10.3.1, Enterprise GDB in SQL Server 2008 R2). Out of curiosity what version are you running, Ned?
This is just SUPER! This ability is very much appreciated!
It does not appear that the Near Me widget in Web AppBuilder supports this capability yet. Is this in fact the case? We like to use the Near Me widget to lookup locations and any intersecting features, but it doesn't seem like the Arcade expressions want to print results in the Near Me resulting popup configuration.
Kyle,
My tests confirm your findings. My group uses the Near Me widget in a similar fashion so this is a significant limitation for us too.
Any thoughts or potential work around ideas from ESRI Staff?
Thanks
Due to performance issues I guess this functionality has been limited. You can however do a field calculation and use the Arcade functions to create a new field and that one will be available in all the widgets. The donwside is that the values in the new field will not update when a feature changes or new features are created.
Kyle Wikstrom Ned Cake This is a known issue with Near Me right now. We're planing to include a fix in the next release of WebAppbuilder/ArcGIS Online.
-Allison
Sounds Great Allison!
Thanks for the quick response. Will the fix find its way into the WAB Developer Edition also?
Yes, it will.
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