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Arcade Expression in Pop-Up Error:15

DanielWalsh

Hello,

We were very happy to see that Arcade expressions are supported in Field Maps and were hoping to use it to generate unique IDs in the field that can be referenced on reports, project documents. We developed an Arcade expression that does this and it works when loaded into the Beta Map viewer. However when opened in Field Maps we get an error code 15, Evaluation_error_code::unknown_function Line :20. I got the expression to work in Field Maps by removing many of the functions which unfortunately make it no longer meet our needs. Does anyone know if there is only a subset of the Arcade library that will work in Field Maps?

Thanks in advance for any help!

Below is the expression that has been developed:

var choices = {}; 
choices['1'] = 'BLD'; 
choices['2'] = 'STR'; 
choices['3'] = 'PAD'; 
choices['4'] = 'PIT'; 
choices['99'] = 'OTH'; 

function formatMulti(inField, d) { 
    var values = Split(inField, ','); 
    var labels = []; 
    for (var i in values){ 
        labels[i] = d[values[i]]; 
    } 
    var outText = Concatenate(labels, TextFormatting.NewLine); 
    return outText; 
} 
var park = IIf(IsEmpty($feature.SiteID), "UNK", Right(Left($feature.SiteID, 6), 3));
var yr = Text($feature.CreationDate, 'YY');
var tpe = formatMulti($feature.Type, choices);
var unique_val = $feature.Creator + $feature.CreationDate;
var hashed = Round(Sqrt(Hash(unique_val)), 0);
var new_id = park + "-" + yr + "-" + tpe+hashed;

return new_id

MapView_Beta.PNG

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KaraUtter

@DanielWalsh thank you for your response. I was afraid of that. I do hope field calculations with arcade expressions happens sooner than later but I bet it will be after our 2021 field season is already complete.

DanielWalsh

Hi @KaraUtter, For me we are using the expression to display an ID for field staff to be able to add to their handwritten notes which they use when writing reports. Then once data is synced we have a tool run to write the expression to the dataset. I think field calculation in the app is coming soon though which will be a big help!

KaraUtter

Hi @DanielWalsh and @ChrisDunn1 - you say pop-up in the title of your submission but then you describe generating unique ID's - are you actually generating ID's in the attribute table as permanent data types through this method with Field Apps? I can't figure out how to get the pop-up information that is expressed through arcade configured in the pop-ups to pass into the Field Apps form to become actual data in the attribute table. Are you doing this?

ChrisDunn1

Hi @Anonymous User ,

The Count function should work, so it's likely the problem is the object being passed into Count. Count will accept a feature set, an array, or a string, so make sure that is what's being counted and make sure it can't be null as I could see that causing an error, you could always add a check for null before the count statement.

You can get some more info by including a console statement, so if your count statement is something like;

Count(myObject)

Then just before that use;

Console(myObject)

And when you hit test switch to the Messages and you'll see what the object is that's being passed into Count.

If this doesn't help you track down the issue feel free to post the full expression if you can.

Anonymous User

Hi @ChrisDunn1 ,

I have a similar question. I have several Arcade expressions which use function "Count". It works fine in Web Map, however when I try to open pop-up in Field Maps I get an error:

Error Code:15

Error Description: Invalid call., Unable to evaluate arcade expression.

Evaluation_error_code::general_evaluation_error Line xyz

Line number is always indicating the line with "Count" funcion that's why I suppose it is the one which is problematic. In version-matrix you sent it is stated that "Count" for FeatureSet is supported since version 1.5. If Field Maps supports functions up to Arcade version 1.11, I am not sure why it is not working. Do you have any suggestions?

DanielWalsh

This is fantastic Chris, exactly what I was looking for!

ChrisDunn1

Hi Daniel,

It looks like the Hash function is what is tripping it up, it is not currently supported by the Runtime SDK as it was introduced in Arcade 1.12. It is supported by the Runtime version 100.10, The current release of Field Maps is at 100.8 of the Runtime SDK, but the next release should be on 100.10 so your code should work then. I hope that helps

Chris

ChrisDunn1

Hi Mike,

There is a version matrix you can use as a reference here: https://developers.arcgis.com/arcade/guide/version-matrix/. Field Maps is currently built on version 100.9 of the Runtime SDK, so it supports functions up to Arcade version 1.11, with the exception of a few specific functions outlined in footnote 4.

MikeSlattery

Interested to see what the answer is; I hope you get resolution.

ESRI team, things seem to be moving fast toward parity, but is there a chart that gives a matrix of supported arcade calls across products?

Multi support in Field Apps through to feature layer storage could be very interesting... I didn't know that had expanded past the xlsform world.

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