Crafting a variety of elements using Power BI's custom visual feature

I'm struggling with creating multiple objects based on input data. I've tried using an array, but it requires knowing the number of objects in advance. Does anyone have a solution for this?

Here is my code snippet -

module powerbi.extensibility.visual {
    export class Visual implements IVisual {
        private lines: d3.Selection<SVGElement>[];
        private svg: d3.Selection<SVGElement>;
        private container: d3.Selection<SVGElement>;

        constructor(options: VisualConstructorOptions) {
            this.svg = d3.select(options.element)
                .classed("svg",true)

            this.container = this.svg.append("g")
                .classed("container", true)

            var a = []
            for(var i = 0; i < 5; ++i){
                a[i] = this.container.append("line")
                    .classed("line_"+String(i), true)
            }

            this.lines = a;
        }

        public update(options: VisualUpdateOptions) {

        }
    }
}

Answer №1

try

a[i] = this.svg.container.append("line")

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