topic Re: Issue with using Unique value groups with field and field1 in ArcGIS JavaScript Maps SDK Questions

Issue with using Unique value groups with field and field1

LayEngTan — Fri, 19 May 2023 18:58:22 GMT

Hi, I would like to find out is using Unique Value Groups, with "field" and "field2", still support putting list of values in the values field?

It is working fine when using it with just one "field" (highlighted in green), but it does not work when "field2" is added into the conditions (highlighted in red).

const renderer = {
    type: "unique-value",
    field: "test1",
    uniqueValueGroups: [{
        heading: "Heading 1",
        classes: [{
            label: "Label 1",
            symbol: {
                type: "simple-marker",
                style: "circle",
                color: "#58ff60",
                outline: {
                    color: "rgba(140,255,120,0.5)",
                    width: 6
                }
            },
            values: ["testValue", "testValue1"]
        }, {
            label: "Label 2",
            symbol: {
                type: "simple-marker",
                style: "circle",
                color: "#58ff60",
                outline: {
                    color: "rgba(140,255,120,0.5)",
                    width: 6
                }
            },
            values: "testValue3"
        }]
    }]
}

const renderer = {
    type: "unique-value",
    field: "test1",
    field2: "test2",
    uniqueValueGroups: [{
        heading: "Heading 1",
        classes: [{
            label: "Label 1",
            symbol: {
                type: "simple-marker",
                style: "circle",
                color: "#58ff60",
                outline: {
                    color: "rgba(140,255,120,0.5)",
                    width: 6
                }
            },
            values: {
                value: ["testValue", "testValue1"],
                value2: "testValve2"
            }
        }, {
            label: "Label 2",
            symbol: {
                type: "simple-marker",
                style: "circle",
                color: "#58ff60",
                outline: {
                    color: "rgba(140,255,120,0.5)",
                    width: 6
                }
            },
            values: {
                value: "testValue3",
                value2: "testValve4"
            }
        }]
    }]
}

Re: Issue with using Unique value groups with field and field1

KristianEkenes — Fri, 19 May 2023 23:08:19 GMT

The first scenario works because passing an array of strings to the values property is a convenience pattern when you're only working with one value. The second example is using incorrect syntax. You can't pass an array to values.value or values.value2. The values property takes an array of objects, like this... That way you can pair up values that go together in a

const renderer = { type: "unique-value", field: "test1", field2: "test2", uniqueValueGroups: [{ heading: "Heading 1", classes: [{ label: "Label 1", symbol: { type: "simple-marker", style: "circle", color: "#58ff60", outline: { color: "rgba(140,255,120,0.5)", width: 6 } }, values: [{ value: "testValue" }, { value: "testValue1", }, { value2: "testValve2" }] }, { label: "Label 2", symbol: { type: "simple-marker", style: "circle", color: "#58ff60", outline: { color: "rgba(140,255,120,0.5)", width: 6 } }, values: { value: "testValue3", value2: "testValve4" } }] }] }

Or if you want field1 and field2 values combined to represent one category, you specify the values for each within a single object.

values: [{ value: "testValu1", value2: "testValue2" }, { value: "testValue3", }, { value2: "testValve4" }]

Re: Issue with using Unique value groups with field and field1

LayEngTan — Sat, 20 May 2023 09:27:22 GMT

Hi KristianEkenes,

Thank you for the solutions. However, when using field and field2 together, each single object need to have both value and value2. I have tested it and it worked. Thank you.

Here is the working version (highlighted in green).

const renderer = {
    type: "unique-value",
    field: "test1",
    field2: "test2",
    uniqueValueGroups: [{
        heading: "Heading 1",
        classes: [{
            label: "Label 1",
            symbol: {
                type: "simple-marker",
                style: "circle",
                color: "#58ff60",
                outline: {
                    color: "rgba(140,255,120,0.5)",
                    width: 6
                }
            },
            values: [{
                value: "testValue",
                value2: "testValve2"
            }, {
                value: "testValue1",
                value2: "testValve2"
            }
            ]
        }, {
            label: "Label 2",
            symbol: {
                type: "simple-marker",
                style: "circle",
                color: "#58ff60",
                outline: {
                    color: "rgba(140,255,120,0.5)",
                    width: 6
                }
            },
            values: {
                value: "testValue3",
                value2: "testValve4"
            }
        }
        ]
    }
    ]
}

Re: Issue with using Unique value groups with field and field1

JoelBennett — Thu, 31 Aug 2023 21:48:55 GMT

If anyone is looking to create a multi-field UniqueValueRenderer via rendererJsonUtils.fromJSON or UniqueValueRenderer.fromJSON, the still undocumented JSON structure for specifying it with uniqueValueGroups has the corresponding structure below:

{ "type": "uniqueValue", "field1": "test1", "field2": "test2", "uniqueValueGroups": [{ "heading": "Heading 1", "classes": [{ "label": "Label 1", "symbol": { "type": "esriSMS", "style": "esriSMSCircle", "color": [88,255,96,255], "outline": { "color": [140,255,120,128], "width": 6 } }, "values": [ ["testValue","testValue2"], ["testValue1","testValue2"] ] }, { "label": "Label 2", "symbol": { "type": "esriSMS", "style": "esriSMSCircle", "color": [88,255,96,255], "outline": { "color": [140,255,120,128], "width": 6 } }, "values": [ ["testValue3","testValue4"] ] }] }] }

Note that the "values" property must be specified as an Array of arrays.

Re: Issue with using Unique value groups with field and field1

KristianEkenes — Thu, 31 Aug 2023 22:00:33 GMT

> the still undocumented JSON structure for specifying it with uniqueValueGroups

The JSON structure has actually been documented in the web map specification ever since the concept was introduced. You can find it here:

https://developers.arcgis.com/web-map-specification/objects/uniqueValueRenderer/
https://developers.arcgis.com/web-map-specification/objects/uniqueValueGroup/
https://developers.arcgis.com/web-map-specification/objects/uniqueValueClass/

It includes examples with multiple scenarios. Perhaps we should improve the JS documentation to link to the web map specification.

Re: Issue with using Unique value groups with field and field1

JoelBennett — Fri, 01 Sep 2023 17:13:21 GMT

Thank you, I stand corrected.