TypeError: Cannot read property 'offset' of undefined

[shawnParticipant]

I’m getting the error
TypeError: Cannot read property ‘offset’ of undefined
but I don’t know why….

My JSON is valid and looks like this:
(this is truncated… there are usually 100-200 records in rData)

{
	"rData": [
		{
			"autoID": "30587",
			"rid": "4",
			"capacityDL": 267,
			"capacityUL": 178,
			"currentDL": 22,
			"currentUL": 1,
			"signal": -61,
			"dateTime": "02/24/2020 00:00:35",
			"benchDL": 270,
			"benchUL": 240,
			"benchSignal": -60
		},
		{
			"autoID": "31907",
			"rid": "4",
			"capacityDL": 273,
			"capacityUL": 243,
			"currentDL": 12,
			"currentUL": 1,
			"signal": -61,
			"dateTime": "02/24/2020 09:10:34",
			"benchDL": 270,
			"benchUL": 240,
			"benchSignal": -60
		},
		{
			"autoID": "31919",
			"rid": "4",
			"capacityDL": 270,
			"capacityUL": 240,
			"currentDL": 11,
			"currentUL": 1,
			"signal": -61,
			"dateTime": "02/24/2020 09:15:35",
			"benchDL": 270,
			"benchUL": 240,
			"benchSignal": -60
		}
	],
	"hul": 243,
	"hdl": 273,
	"hsig": 0,
	"error": "0"
}

My settings look like this when populated:

{
	"title": "hillsdale-erie",
	"description": "",
	"enableAnimations": true,
	"showLegend": true,
	"padding": {
		"left": 10,
		"top": 5,
		"right": 10,
		"bottom": 5
	},
	"titlePadding": {
		"left": 10,
		"top": 0,
		"right": 0,
		"bottom": 10
	},
	"source": {
		"_source": {
			"datatype": "json",
			"datafields": [
				{
					"name": "autoID"
				},
				{
					"name": "rid"
				},
				{
					"name": "capacityDL"
				},
				{
					"name": "capacityUL"
				},
				{
					"name": "currentDL"
				},
				{
					"name": "currentUL"
				},
				{
					"name": "signal"
				},
				{
					"name": "dateTime",
					"type": "date",
					"format": "MM/dd/yyyy HH:mm:ss"
				},
				{
					"name": "benchDL"
				},
				{
					"name": "benchUL"
				},
				{
					"name": "benchSignal"
				}
			],
			"localdata": {
				"rData": [
					{
						"autoID": "30586",
						"rid": "3",
						"capacityDL": 666,
						"capacityUL": 682,
						"currentDL": 24,
						"currentUL": 1,
						"signal": -48,
						"dateTime": "02/24/2020 00:00:24",
						"benchDL": 680,
						"benchUL": 680,
						"benchSignal": -51
					},
				{
					"autoID": "31954",
					"rid": "3",
					"capacityDL": 675,
					"capacityUL": 682,
					"currentDL": 37,
					"currentUL": 1,
					"signal": -49,
					"dateTime": "02/24/2020 09:30:24",
					"benchDL": 680,
					"benchUL": 680,
					"benchSignal": -51
				}
			],
			"hul": 686,
			"hdl": 681,
			"hsig": 0,
			"error": "0"
		}
	},
	"xAxis": {
		"dataField": "dateTime",
		"type": "date",
		"baseUnit": "minute",
		"valuesOnTicks": true,
		"unitInterval": 114.99999999999999
	},
	"valueAxis": {
		"unitInterval": 100,
		"minValue": 0,
		"maxValue": 1000,
		"title": {
			"text": "<br>"
		},
		"flip": false
	},
	"colorScheme": "scheme03",
	"seriesGroups": [
		{
			"type": "line",
			"series": [
				{
					"dataField": "capacityDL",
					"displayText": "capacity download"
				},
				{
					"dataField": "currentDL",
					"displayText": "current download"
				}
			]
		}
	]
}

I’m wondering if the extra fields at the end of the JSON (hul,hdl,hsig,error) are throwing something off?

[shawnParticipant]

Follow up:

Removing the extra fields did the trick.

var pJson=json.rData;

// prepare the data
var source =
{
    datatype: "json",
    datafields: [
		{ name: "autoID" },
		{ name: "rid" },
		{ name: "capacityDL" },
		{ name: "capacityUL" },
		{ name: "currentDL" },
		{ name: "currentUL" },
		{ name: "signal" },
		{ name: "dateTime", type: "date", format: "MM/dd/yyyy HH:mm:ss" },
		{ name: "benchDL" },
		{ name: "benchUL" },
		{ name: "benchSignal" }
    ],
    localdata: pJson,
    root: 0
};

[HristoParticipant]

Hello shawn,

I assume that this case has been resolved?
Also, you could try to use the “rData” value for the root member.

Best Regards,
Hristo Hristov

jQWidgets team
https://www.jqwidgets.com

[Author]

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