Heat map

const pivot = new Flexmonster({
  container: "pivot-container",
  componentFolder: "https://cdn.flexmonster.com/",
  height: 600,
  report: {
    dataSource: {
      type: "csv",
      filename: "data/sales.csv",
    },
    slice: {
      rows: [
        {
          uniqueName: "Month",
        },
        {
          uniqueName: "[Measures]",
        },
      ],
      columns: [
        {
          uniqueName: "Category",
          levelName: "Product Name",
          filter: {
            members: [
              "category.[condiments].[bbq sauce]",
              "category.[breakfast cereals].[corn flakes]",
              "category.[confectionery]",
              "category.[bakery].[chocolate biscuits]",
              "category.[fruit preserves].[apple jam]",
              "category.[bakery].[apple cake]",
              "category.[soups].[tomato soup]",
            ],
          },
        },
      ],
      measures: [
        {
          uniqueName: "Revenue",
          aggregation: "sum",
          format: "currency",
        },
      ],
    },
    formats: [
      {
        name: "",
        thousandsSeparator: ",",
        decimalSeparator: ".",
        decimalPlaces: 2,
      },
      {
        name: "currency",
        currencySymbol: "$",
      },
    ],
  },
  customizeCell: customizeCellFunction,
});

const colorScheme = [
  "#DF3800",
  "#FF6D1E",
  "#FF9900",
  "#FFB600",
  "#A5CE31",
  "#6CBD05",
  "#00A45A",
];

const minValue = 0;
const maxValue = 15000;

function customizeCellFunction(cell, data) {
  if (data && data.type === "value" && !data.isGrandTotal) {
    let backgroundColor = getColorFromRange(data.value);
    let textShadowColor = tinycolor(backgroundColor).darken(15).toString();
    let borderColor = tinycolor(backgroundColor).darken(3).toString();

    cell.style = {
      ...cell.style,
      "background-color": backgroundColor,
      "color": "white",
      "font-weight": "bold",
      "text-shadow": `0px 2px 3px ${textShadowColor}`,
      "border-bottom": `1px solid ${borderColor}`,
      "border-right": `1px solid ${borderColor}`,
    };
  }
}

function getColorFromRange(value) {
  if (isNaN(value)) {
    value = minValue;
  }
  value = Math.max(minValue, Math.min(value, maxValue));
  let perc = (minValue + value) / maxValue;
  let colorIdx = Math.round((colorScheme.length - 1) * perc);
  return colorScheme[colorIdx];
}

<div id="pivot-container"></div>