Error in New Expression using Arcade - (var feature in fs) - feature already defined

mfreeman

Hello,

I don't know anything in Arcade but I am following someone else code to split the answer of a multiselect question and generate a chart that counts each answer separatly.

The code is as follow

// Reference layer using the FeatureSetByPortalItem() method.

var p = Portal("https://arcgis.com");

var fs = FeatureSetByPortalItem(

    p,

    '2ee459d7a5914544bb18ea293dd3be41',

    0,

    ['energy_sel_one'],

    false

);

// Create empty array for features and feat object

var features = [];

var feat;

// Split comma separated hazard types and store in dictionary.  

for (var feature in fs) {

    var split_array  =  Split(feature["energy_sel_one"], ',')

    var count_arr = Count(split_array)

    for(var i = 0; i < count_arr; i++ ){

        feat = {

            'attributes': {

                'split_choices': Trim(split_array[i])

            }

        }

        Push(features, feat);

}}

// Empty dictionary to capture each hazard reported as separate rows.

var choicesDict = {

    'fields': [

        { 'name': 'split_choices', 'type': 'esriFieldTypeString'}],

    'geometryType': '',

    'features': features

};

// Convert dictionary to featureSet.

var fs_dict = FeatureSet(choicesDict);

// Return featureset after grouping by hazard types.

return GroupBy(fs_dict, ['split_choices'],

       [{ name: 'split_count', expression: 'split_choices', statistic: 'COUNT' }]);  

 

However when I run the expression, it returns the following error

 

Could anyone help me in fixing it knowing that I don't know anything about arcade.

Thank you

kenbuja

The code does work substituting my own portal item. Where is it breaking for you? Are you checking the output at various places in the code with Console to see if it's returning what you're expecting?

var p = Portal("https://noaa.maps.arcgis.com/");
var fs = FeatureSetByPortalItem(
    p,
    '1624f1a86dca4af086cc13141a1b0e2b',
    1,
    ['Authors'],
    false
);

// Create empty array for features and feat object
var features = [];
var feat;
// Split comma separated hazard types and store in dictionary.  
for (var feature in fs) {
    var split_array  =  Split(feature["Authors"], ',')
    var count_arr = Count(split_array)
    console(count_arr)
    for(var i = 0; i < count_arr; i++ ){
        feat = {
            'attributes': {
                'split_choices': Trim(split_array[i])
            }
        }
        Push(features, feat);
}}


// Empty dictionary to capture each hazard reported as separate rows.
var choicesDict = {
    'fields': [
        { 'name': 'split_choices', 'type': 'esriFieldTypeString'}],
    'geometryType': '',
    'features': features
};

// Convert dictionary to featureSet.
var fs_dict = FeatureSet(choicesDict);
//return fs_dict
// Return featureset after grouping by hazard types.
return GroupBy(fs_dict, ['split_choices'],
       [{ name: 'split_count', expression: 'split_choices', statistic: 'COUNT' }]);