topic Re: How to match 'null, value' with multiple attribute fields in UniqueValueRenderer? in ArcGIS JavaScript Maps SDK Questions

How to match 'null, value' with multiple attribute fields in UniqueValueRenderer?

Anonymous User — Sun, 12 Dec 2021 02:22:33 GMT

Hi - I am using two attribute fields to create a UniqueValueRenderer for my feature layer. I am having trouble with specifying matches if a field has no value but is null. In the example below the first 'infos' object has two values to match the attribute fields being used, but the second info object I am trying match null fields of attribute field 1 and a value of attribute field 2. The second object (null one) is not working and the graphics revert to the default symbol. Any suggestions? I also tried leaving it blank (',Prospect').

 var params = {
                "type" : "uniqueValue",
                "field1" : "sStatus",
                "field2" : "iStatus",
                "fieldDelimiter" : ", ",
                "defaultLabel" : "Unknown",
                "defaultSymbol" : {
                    "color" : this.colors.noColor,
                    "type" : "esriSFS",
                    "style" : "esriSFSSolid",
                    "outline" : {
                        "color" : this.colors.opaqueGoldJSON,
                        "type" : "esriSLS",
                        "style" : "esriSLSSolid"
                    }
                },
                "uniqueValueInfos" : [{
                    "value" : 'In Service, Not Applicable',
                    "label" : "In Service",
                    "symbol" : {
                        "color" : this.colors.lightBlueJSON,
                        "type" : "esriSFS",
                        "style" : "esriSFSSolid",
                        "outline" : {
                            "color" : this.colors.opaqueGoldJSON,
                            "type" : "esriSLS",
                            "style" : "esriSLSSolid"
                        }
                    }
                },  {
                    "value" : 'null, Prospect',
                    "label" : "Prospect",
                    "symbol" : {
                        "color" : this.colors.goldJSON,
                        "type" : "esriSFS",
                        "style" : "esriSFSSolid",
                        "outline" : {
                            "color" : this.colors.opaqueGoldJSON,
                            "type" : "esriSLS",
                            "style" : "esriSLSSolid"
                        }
                    }
                }]
            };


            allRenderers.cdbServiceRenderer2 = new UniqueValueRenderer(cdbServiceRendererParams2);

Re: How to match 'null, value' with multiple attribute fields in UniqueValueRenderer?

RobertScheitlin__GISP — Sun, 12 Dec 2021 02:22:36 GMT

Sarah,

This worked for me (just omitting the null value in the value property):

    var params = {
          "type": "uniqueValue",
          "field1": "NEIGHBORHOOD",
          "field2": "NPPIN",
          "fieldDelimiter": ", ",
          "defaultLabel": "Unknown",
          "defaultSymbol": {
            "color": [0, 0, 0, 128],
            "type": "esriSFS",
            "style": "esriSFSSolid",
            "outline": {
              "color": [0, 0, 0, 255],
              "type": "esriSLS",
              "style": "esriSLSSolid"
            }
          },
          "uniqueValueInfos": [
            {
              "value": '03-001.0, ',
              "label": "03-001.0, null",
              "symbol": {
                "color": [128, 0, 0, 128],
                "type": "esriSFS",
                "style": "esriSFSSolid",
                "outline": {
                  "color": [128, 0, 0, 255],
                  "type": "esriSLS",
                  "style": "esriSLSSolid"
                }
              }
            }, {
              "value": '03-001.0, 801',
              "label": "03-001.0, 801",
              "symbol": {
                "color": [0, 0, 128, 128],
                "type": "esriSFS",
                "style": "esriSFSSolid",
                "outline": {
                  "color": [0, 0, 128, 255],
                  "type": "esriSLS",
                  "style": "esriSLSSolid"
                }
              }
            }]
        };

Re: How to match 'null, value' with multiple attribute fields in UniqueValueRenderer?

Anonymous User — Fri, 13 Feb 2015 18:13:32 GMT

Hi Robert - Thanks for the input. I did mention I tried that but it did not work for me.

It raises an interesting point though, because I am working with domains. Are you?

Re: How to match 'null, value' with multiple attribute fields in UniqueValueRenderer?

RobertScheitlin__GISP — Fri, 13 Feb 2015 19:29:44 GMT

Sarah,

In that test I was not using fields that had domains. Are your domains coded value text or integers?

Re: How to match 'null, value' with multiple attribute fields in UniqueValueRenderer?

Anonymous User — Sat, 14 Feb 2015 00:05:12 GMT

Coded value

Re: How to match 'null, value' with multiple attribute fields in UniqueValueRenderer?

RobertScheitlin__GISP — Sat, 14 Feb 2015 00:31:58 GMT

Ok text or integer values though?

Re: How to match 'null, value' with multiple attribute fields in UniqueValueRenderer?

Anonymous User — Sat, 14 Feb 2015 00:33:39 GMT

text

Re: How to match 'null, value' with multiple attribute fields in UniqueValueRenderer?

RobertScheitlin__GISP — Sun, 12 Dec 2021 02:22:38 GMT

Sarah,

OK, I setup some data with a coded text domain for both sStatus and iStatus in a FGDB and then used this JSON and I still had no issue using the null value.

        var params = {
          "type": "uniqueValue",
          "field1": "iStatus",
          "field2": "sStatus",
          "fieldDelimiter": ", ",
          "defaultLabel": "Unknown",
          "defaultSymbol": {
            "color": [128, 128, 128, 255],
            "type": "esriSFS",
            "style": "esriSFSSolid",
            "outline": {
              "color": [128, 128, 128, 128],
              "type": "esriSLS",
              "style": "esriSLSSolid"
            }
          },
          "uniqueValueInfos": [
            {
              "value": 'IS, NA',
              "label": "In Service",
              "symbol": {
                "color": [0, 0, 255, 255],
                "type": "esriSFS",
                "style": "esriSFSSolid",
                "outline": {
                  "color": [0, 0, 255, 128],
                  "type": "esriSLS",
                  "style": "esriSLSSolid"
                }
              }
            }, {
              "value": 'IS, CC',
              "label": "In Service",
              "symbol": {
                "color": [255, 0, 255, 255],
                "type": "esriSFS",
                "style": "esriSFSSolid",
                "outline": {
                  "color": [255, 0, 255, 128],
                  "type": "esriSLS",
                  "style": "esriSLSSolid"
                }
              }
            }, {
              "value": ', Prospect',
              "label": "Prospect",
              "symbol": {
                "color": [128, 0, 128, 255],
                "type": "esriSFS",
                "style": "esriSFSSolid",
                "outline": {
                  "color": [128, 0, 128, 128],
                  "type": "esriSLS",
                  "style": "esriSLSSolid"
                }
              }
            }]
        };

Re: How to match 'null, value' with multiple attribute fields in UniqueValueRenderer?

Anonymous User — Tue, 04 Aug 2015 19:26:43 GMT

This issue reared its head again. I should say I am using SDE databases not FGDB.

Re: How to match 'null, value' with multiple attribute fields in UniqueValueRenderer?

JoelBennett — Sun, 12 Dec 2021 02:22:41 GMT

The getUniqueValueInfo function of the UniqueValueRenderer takes a graphic, examines its attributes, and returns an info object with the symbol. I've copied that same function and updated it to instead return the index it creates from the graphic's attributes. If you could get a look at these indexes, this information should tell you what values you need to specify when setting up your renderer. I haven't tested this, but here it is:

var featureLayer = map.getLayer("my_layer_id");
var renderer = featureLayer.renderer;
var graphics = featureLayer.graphics;

renderer.getUniqueValueInfo2 = function(a) {
 var b = this.attributeField, d = a.attributes, e, f;
 this._multiple ? (a = this.attributeField2, e = this.attributeField3, f = [], b && f.push(d), 
 a && f.push(d), e && f.push(d), b = f.join(this.fieldDelimiter || "")) : b = c.isFunction(b) ? b(a) : d;
 return b;
};

for (var x = 0; x < graphics.length; x++)
 console.info(x.toString() + ": [" + renderer.getUniqueValueInfo2(graphics) + "]");

Re: How to match 'null, value' with multiple attribute fields in UniqueValueRenderer?

EllaHaines — Wed, 01 Aug 2018 01:41:15 GMT

What you are looking for is "<Null>"

"value" : '<Null>, Prospect'

It took us a ridiculous amount of time to get this. So much pain and frustration for a couple of carats!

Re: How to match 'null, value' with multiple attribute fields in UniqueValueRenderer?

JoelBennett — Wed, 01 Aug 2018 17:37:35 GMT

Thank you for pointing this out...otherwise, we may never have known. It appears this was a new feature introduced in version 3.24. Neither the "What's New" page nor the documentation for UniqueValueRenderer make any mention of this change.