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Výraz Arcade pro vyskakovací okna se nezobrazuje.

JarettCook

Proč se výraz atributu nastavený pro vyskakovací okno neuloží a nezobrazí ve vrstvě sdílené napříč webovými mapami?

Následující výraz Arcade představoval skvělé řešení, jak zobrazit výměru vybraného prvku při použití výchozí projekce Web Mercator.

Když výraz přidám do vyskakovacího okna vrstvy služby Hosted Feature Service sdílené s mou pracovní skupinou, funguje pouze během jedné relace v Map Viewer. Když se webová mapa otevře později, výsledek výrazu se nezobrazí. Výraz je stále vidět v nabídce konfigurace vyskakovacího okna, ale v samotném vyskakovacím okně se nezobrazí žádný výsledek.

Příslušná služba Feature Service a webové mapy jsou sdílené se skupinou a uložené do mezipaměti v aplikaci Collector.

Máte nějaký nápad, proč se uložený výraz Arcade přestane zobrazovat?

Díky,

Jcoo490

Najděte více příspěvků označených jako

Accepted answers

All comments

KellyGerrow

Hey Jarett,

The expression should work across web maps. Is the map public? If not, you may want to get in touch with Support Services to look into what specifically is happening with your map. Do you see this issue on all browsers?

-Kelly

JarettCook

The maps that display the Feature Service in question are only shared with my group. I see the same issue in Chrome and Internet Explorer. How do I contact Support Services?

XanderBakker

Details here: Esri Support Contact Support

In case you don't reside in the US, you can select the country to get details of your local distributor.

If you have access to https://my.esri.com/ , you can also create an support case there.

AmyGwin2

I am also having this issue. It only reports the information in the popup one session. All the information in faked for a new app I am building, and just wrapping up the configurations, when I noticed the size wasn't appearing on previously created test polygons, lines. I am using Arcade in AGOL expression, but I am not sharing at all right now. Our organization is behind a firewall until we move to Portal.

Round(AreaGeodetic($feature, 'square-kilometers'),2)
Round(AreaGeodetic($feature, 'square-miles'),2)

There should be numbers reported in front of sq km, sq mi in these pop-ups. Very frustrating.

XanderBakker

Just did a test to see if the expressions work correctly in my portal (AGOL) and they do.

Expression:

Resulting pop-up:

Best to contact Esri Support and work through the case.

AmyGwin2

Xander,

So thanks for checking. However the issues isn't whether it works. The issues is that once the session ends and you come back to the popup - the information is missing. Could you go back to your feature shown and confirm that the arcade expression is still reporting from before. Thanks in advance. Also - I am unable to contact ESRI since I am not the primary contact.

-Amy

XanderBakker

Strange... just created a couple of polygons, saved the map with the expressions and closed it. Opened the map again from my content and the expression are still there and work without problems.

Can you describe the steps a little more to see if I can reproduce?

AmyGwin2

Xander,

I am finally working with ESRI tech support now. They were able to reproduce it on their end. It appears this issue only applies to hosted feature layers that have been set to 'editable'. I am anxious to hear if there is a fix available. This functionality would really improve my organizations' buy-in of web maps. I'm interested to hear how this works on your end as well.

XanderBakker

As you can see I haven't been able to reproduce it on my end. Since support has been able to reproduce it I think the best way is to wait for a solution from their side. One thing that does come to mind is creating a Hosted feature layer view: Create hosted feature layer views—ArcGIS Online Help | ArcGIS . Since this is a different way of looking at the feature layer, maybe the Arcade expression will work here.

KellyGerrow

Hi Amy and Xander,

I read into this bug a little further. It looks like the bug is specific to using the AreaGeodetic expression with non-webmercator projection. Support is limited to geometries with a Web Mercator (wkid 3857) or a WGS 84 (wkid 4326) spatial reference.:

https://developers.arcgis.com/arcade/function-reference/geometry_functions/#areageodetic

It shouldn't have been possible to create this expression with a service in an unsupported geometry. Are you able to reproject your data into Web Mercator prior to publishing? This should get you up and running.

-Kelly

AmyGwin2

This has been a identified as a confirmed bug.

Based on Kelly's notes I started over from a new shapefile - in web mercator. Shared it as a hosted feature layer, enabled editor tracking. Created the expressions.

In the webmap I drew a new polygon. However the expressions wouldn't produce any values on this new hosted feature layer. Either way ESRI documents both as supported spatial references.

AreaGeodetic
AreaGeodetic( geometry, unit? ) -> returns: Number
Since version 1.3
Returns the geodetic area of the input geometry in the given units. This is more reliable measurement of area than Area() because it takes into account the Earth's curvature. Support is limited to geometries with a Web Mercator (wkid 3857) or a WGS 84 (wkid 4326) spatial reference.
Be aware that using $feature as input to this function will yield results only as precise as the view's scale resolution. Therefore values returned from expressions using this function may change after zooming between scales. Read more here.
Name Type Description
geometry Polygon / Feature The Polygon or Extent geometry for which to calculate the planar area.
unit String / Number optional Measurement unit of the return value. Use one of the string values listed in the Units reference or any of the numeric codes for area units.
Returns: Number
Example
Returns the geodetic area of the feature in square meters
AreaGeodetic($feature, 'square-meters')

I am desperate for a workaround solution for my organization to embrace ArcGIS Online for collaboration on shapes/spatial data . This is a key missing component for users. They need to be able to draw a polygon and get a very realistic size without using a secondary tool then editing to record the size.

Would the better approach be to create a JSON feature and return the JSON geometry calculation?

KellyGerrow

Are you able to share the layer that is published in Web Mercator? As this should be working with this projection I would recommend getting in contact with tech support if it isn't.

-Kelly

AmyGwin2

Kelly, I've already tried ESRI support. This has been a identified as a confirmed bug. See the note from the ESRI tech below.

Thank you for your reply. For the time being, I have attached the bug to the case, which you now should be able to see its full description in My ESRI > My Organization > Support > Search for the bug (BUG-000117230 - Arcade expressions Round(AreaGeodetic($feature, 'square kilometers'),2) is not saved when using 'Save Layer' option in the 'Visualization' tab of the item details)

I'm looking for a workaround.

I am desperate for a workaround solution for my organization to embrace ArcGIS Online for collaboration on shapes/spatial data . This is a key missing component for our users.

XanderBakker

The BUG mentions that the Arcade expression is not stored when saving the layer, but why don't you share the web map instead?

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