angular - d3 stacked bar chart in angular4 -


trying bostok's stacked bar chart run in angular 4.

i did post question on again running difficulty new error,enter image description here

i've placed 2 functions stackmin , stackmax outside ngonchanges()

  ngonchanges(){     console.log("change detected");     let self = this;     let d3 = this.d3;     let d3parentelement: any;     let svg: any;     let width: number = 500;     let height: number = 150;     let datas: {month: string, apples: number, bananas: number, cherries: number, dates: number}[] = [];     let stack: any;     let series: any;      let margin: {top: number, right: number, bottom: number, left: number} = {        top: 20,        right: 30,        bottom: 30,        left: 60      };      if (this.parentnativeelement !== null) {       d3.select("svg").remove();       svg = d3.select(this.parentnativeelement)       .append('svg')       .attr('width', width)       .attr('height', height);        datas = [         {month: "2015, 0, 1", apples: 3840, bananas: 1920, cherries: 960, dates: 400},         {month: "2015, 1, 1", apples: 1600, bananas: 1440, cherries: 960, dates: 400},         {month: "2015, 2, 1", apples:  640, bananas:  960, cherries: 640, dates: 400},         {month: "2015, 3, 1", apples:  320, bananas:  480, cherries: 640, dates: 400}       ];        stack = d3.stack()       .keys(["apples", "bananas", "cherries", "dates"])       .order(d3.stackordernone)       .offset(d3.stackoffsetnone);        series = stack(datas);          var x = d3.scaleband()             .domain(datas.map(function(d) {               return d.month;             }))             .rangeround([margin.left, width - margin.right])                 .padding(0.1);          var y = d3.scalelinear()             .domain([d3.min(series, stackmin), d3.max(series, stackmax)])             .rangeround([height - margin.bottom, margin.top]);       ..............           }            function stackmin(serie) {             return d3.min(serie, function(d) {               return d[0];             });           }            function stackmax(serie) {             return d3.max(serie, function(d) {               return d[1];             });           }         }        }

datencia has great repo on github examples of various d3 graphs in angular, unfortunately hasn't yet added stacked bar chart example.

thanks,


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