Power BI 视觉对象中的数据视图映射

Question

Good day

I am creating custom visualization on d3js and pbiviz for powerbi

Here is the code in capabilities.js:

{
"dataRoles":[
    {
        "displayName": "HoleDepth",
        "name": "depth",
        "kind": "Grouping"
    },
    {
        "displayName": "Days",
        "name": "days",
        "kind": "Measure"
    },
    {
        "displayName": "Diametrs",
        "name": "diametrs",
        "kind": "Measure"
    },
    {
        "displayName": "Sensor1",
        "name": "sensor_1",
        "kind": "Measure"
    },
    {
        "displayName": "Sensor2",
        "name": "sensor_2",
        "kind": "Measure"
    },
    {
        "displayName": "Sensor3",
        "name": "sensor_3",
        "kind": "Measure"
    },
    {
        "displayName": "Sensor4",
        "name": "sensor_4",
        "kind": "Measure"
    }
],
"dataViewMappings": [
    {
        "categorical": {
            "categories": {
                "for": { "in": "depth" }
            },
            "values": {
                "select":[
                    { "bind": { "to": "days" } },
                    { "bind": { "to": "diametrs" } },
                    { "bind": { "to": "sensor_1" } },
                    { "bind": { "to": "sensor_2" } },
                    { "bind": { "to": "sensor_3" } },
                    { "bind": { "to": "sensor_4" } }
                ]
            }
        }
    }
]

}

But in visualization it is inconvenient to use categorical -> values array

Is it possible to categorical -> values was like an object with keys?

Answer 1

I do not think that this is possible directly through data mapping. What I usually do if I want to have data prepared in the specific format, convenient for visualization with d3.js, is the custom function that transforms the data from VisualUpdateOptions . Then I call this function inside public update(options: VisualUpdateOptions)