topic Re: Create a FeatureSet from an Array... in ArcGIS Online Questions

Create a FeatureSet from an Array...

DJB — Wed, 03 May 2023 20:22:18 GMT

I'm trying to create a FeatureSet from an Array. I've setup a for loop to cycle through the array and add a new row for each record in the array. The issue that I'm running into is I cannot figure out how to add a new row. So I am always overwriting the previous record.

My array is YearList = [2018,2019,2020,2021,2022,2023] and I would like a table like:

Year	FID
2018	0
2019	1
2020	2
2021	3
2022	4
2023	5

var YearList = [2018,2019,2020,2021,2022,2023]

for (var Yr in YearList){

var yearDict = {fields: [{alias: "Year",name: "Year",type: "esriFieldTypeInteger",}],spatialReference: '',geometryType: "",features: [{geometry: "",attributes: {Year: YearList[Yr]},}]};

};

return FeatureSet(Text(yearDict));

Any suggestions would be greatly appreciated.

Thanks everyone.

~Dan

Re: Create a FeatureSet from an Array...

jcarlson — Wed, 03 May 2023 21:04:25 GMT

You are defining your yearDict object inside the loop, so it's getting recreated every time, losing any previous entries. Define it first outside of the loop, and use your array to populate the features array within it:

var YearList = [2018,2019,2020,2021,2022,2023] var yearDict = { fields: [{alias: "Year", name: "Year", type: "esriFieldTypeInteger"}], geometryType: "", features: [] } for (var Yr in YearList){ Push( yearDict['features'], {attributes: {Year: YearList[Yr]}} ) }; return FeatureSet(Text(yearDict));

Also, you don't need to specify the geometry or spatial reference if there isn't any.

Re: Create a FeatureSet from an Array...

DJB — Thu, 04 May 2023 12:47:56 GMT

@jcarlson,

Thank you for the SUPER quick response. Worked perfectly!

Thanks again.

~Dan