Method previewChart

server/controllers/ChartController.js:1019–1035

(chart, projectId, user, noSource)

  }

  previewChart(chart, projectId, user, noSource) {
    return this.getPreviewData(chart, projectId, user, noSource)
      .then((data) => {
        if (chart.type === "table") {
          return dataExtractor(chart);
        }

        const axisChart = new AxisChart(data);
        return axisChart.plot();
      })
      .then((chartData) => {
        return new Promise((resolve) => resolve(chartData));
      })
      .catch((error) => {
        return new Promise((resolve, reject) => reject(error));
      });
  }

  getChartData(id) {
    let gChartData;