Tooltip not showing boolean values

Version

5.2.1

Steps to reproduce

Provide a series with booleans as input. The chart will render these fine (usign 1 / 0 as values). The tooltip will however show seriesname -.

This used to work in older versions, and seems to be a regression introduced in either 5.1 or 5.2 series.

reproduction code

Copy of the echarts sample with slight modifications to create a boolean series. Simply pasting the below code into the samples editor and hovering over the series will display the problem.

code sandbox.

const upColor = '#ec0000';
const upBorderColor = '#8A0000';
const downColor = '#00da3c';
const downBorderColor = '#008F28';
// Each item: open，close，lowest，highest
const data0 = splitData([
  ['2013/1/24', 2320.26, 2320.26, 2287.3, 2362.94],
  ['2013/1/25', 2300, 2291.3, 2288.26, 2308.38],
  ['2013/1/28', 2295.35, 2346.5, 2295.35, 2346.92],
  ['2013/1/29', 2347.22, 2358.98, 2337.35, 2363.8],
  ['2013/1/30', 2360.75, 2382.48, 2347.89, 2383.76],
  ['2013/1/31', 2383.43, 2385.42, 2371.23, 2391.82],
  ['2013/2/1', 2377.41, 2419.02, 2369.57, 2421.15],
  ['2013/2/4', 2425.92, 2428.15, 2417.58, 2440.38],
  ['2013/2/5', 2411, 2433.13, 2403.3, 2437.42],
  ['2013/2/6', 2432.68, 2434.48, 2427.7, 2441.73],
  ['2013/2/7', 2430.69, 2418.53, 2394.22, 2433.89],
  ['2013/2/8', 2416.62, 2432.4, 2414.4, 2443.03],
  ['2013/2/18', 2441.91, 2421.56, 2415.43, 2444.8],
  ['2013/2/19', 2420.26, 2382.91, 2373.53, 2427.07],
  ['2013/2/20', 2383.49, 2397.18, 2370.61, 2397.94],
  ['2013/2/21', 2378.82, 2325.95, 2309.17, 2378.82],
  ['2013/2/22', 2322.94, 2314.16, 2308.76, 2330.88],
  ['2013/2/25', 2320.62, 2325.82, 2315.01, 2338.78],
  ['2013/2/26', 2313.74, 2293.34, 2289.89, 2340.71],
  ['2013/2/27', 2297.77, 2313.22, 2292.03, 2324.63],
  ['2013/2/28', 2322.32, 2365.59, 2308.92, 2366.16],
  ['2013/3/1', 2364.54, 2359.51, 2330.86, 2369.65],
  ['2013/3/4', 2332.08, 2273.4, 2259.25, 2333.54],
  ['2013/3/5', 2274.81, 2326.31, 2270.1, 2328.14],
  ['2013/3/6', 2333.61, 2347.18, 2321.6, 2351.44],
  ['2013/3/7', 2340.44, 2324.29, 2304.27, 2352.02],
  ['2013/3/8', 2326.42, 2318.61, 2314.59, 2333.67],
  ['2013/3/11', 2314.68, 2310.59, 2296.58, 2320.96],
  ['2013/3/12', 2309.16, 2286.6, 2264.83, 2333.29],
  ['2013/3/13', 2282.17, 2263.97, 2253.25, 2286.33],
  ['2013/3/14', 2255.77, 2270.28, 2253.31, 2276.22],
  ['2013/3/15', 2269.31, 2278.4, 2250, 2312.08],
  ['2013/3/18', 2267.29, 2240.02, 2239.21, 2276.05],
  ['2013/3/19', 2244.26, 2257.43, 2232.02, 2261.31],
  ['2013/3/20', 2257.74, 2317.37, 2257.42, 2317.86],
  ['2013/3/21', 2318.21, 2324.24, 2311.6, 2330.81],
  ['2013/3/22', 2321.4, 2328.28, 2314.97, 2332],
  ['2013/3/25', 2334.74, 2326.72, 2319.91, 2344.89],
  ['2013/3/26', 2318.58, 2297.67, 2281.12, 2319.99],
  ['2013/3/27', 2299.38, 2301.26, 2289, 2323.48],
  ['2013/3/28', 2273.55, 2236.3, 2232.91, 2273.55],
  ['2013/3/29', 2238.49, 2236.62, 2228.81, 2246.87],
  ['2013/4/1', 2229.46, 2234.4, 2227.31, 2243.95],
  ['2013/4/2', 2234.9, 2227.74, 2220.44, 2253.42],
  ['2013/4/3', 2232.69, 2225.29, 2217.25, 2241.34],
  ['2013/4/8', 2196.24, 2211.59, 2180.67, 2212.59],
  ['2013/4/9', 2215.47, 2225.77, 2215.47, 2234.73],
  ['2013/4/10', 2224.93, 2226.13, 2212.56, 2233.04],
  ['2013/4/11', 2236.98, 2219.55, 2217.26, 2242.48],
  ['2013/4/12', 2218.09, 2206.78, 2204.44, 2226.26],
  ['2013/4/15', 2199.91, 2181.94, 2177.39, 2204.99],
  ['2013/4/16', 2169.63, 2194.85, 2165.78, 2196.43],
  ['2013/4/17', 2195.03, 2193.8, 2178.47, 2197.51],
  ['2013/4/18', 2181.82, 2197.6, 2175.44, 2206.03],
  ['2013/4/19', 2201.12, 2244.64, 2200.58, 2250.11],
  ['2013/4/22', 2236.4, 2242.17, 2232.26, 2245.12],
  ['2013/4/23', 2242.62, 2184.54, 2182.81, 2242.62],
  ['2013/4/24', 2187.35, 2218.32, 2184.11, 2226.12],
  ['2013/4/25', 2213.19, 2199.31, 2191.85, 2224.63],
  ['2013/4/26', 2203.89, 2177.91, 2173.86, 2210.58],
  ['2013/5/2', 2170.78, 2174.12, 2161.14, 2179.65],
  ['2013/5/3', 2179.05, 2205.5, 2179.05, 2222.81],
  ['2013/5/6', 2212.5, 2231.17, 2212.5, 2236.07],
  ['2013/5/7', 2227.86, 2235.57, 2219.44, 2240.26],
  ['2013/5/8', 2242.39, 2246.3, 2235.42, 2255.21],
  ['2013/5/9', 2246.96, 2232.97, 2221.38, 2247.86],
  ['2013/5/10', 2228.82, 2246.83, 2225.81, 2247.67],
  ['2013/5/13', 2247.68, 2241.92, 2231.36, 2250.85],
  ['2013/5/14', 2238.9, 2217.01, 2205.87, 2239.93],
  ['2013/5/15', 2217.09, 2224.8, 2213.58, 2225.19],
  ['2013/5/16', 2221.34, 2251.81, 2210.77, 2252.87],
  ['2013/5/17', 2249.81, 2282.87, 2248.41, 2288.09],
  ['2013/5/20', 2286.33, 2299.99, 2281.9, 2309.39],
  ['2013/5/21', 2297.11, 2305.11, 2290.12, 2305.3],
  ['2013/5/22', 2303.75, 2302.4, 2292.43, 2314.18],
  ['2013/5/23', 2293.81, 2275.67, 2274.1, 2304.95],
  ['2013/5/24', 2281.45, 2288.53, 2270.25, 2292.59],
  ['2013/5/27', 2286.66, 2293.08, 2283.94, 2301.7],
  ['2013/5/28', 2293.4, 2321.32, 2281.47, 2322.1],
  ['2013/5/29', 2323.54, 2324.02, 2321.17, 2334.33],
  ['2013/5/30', 2316.25, 2317.75, 2310.49, 2325.72],
  ['2013/5/31', 2320.74, 2300.59, 2299.37, 2325.53],
  ['2013/6/3', 2300.21, 2299.25, 2294.11, 2313.43],
  ['2013/6/4', 2297.1, 2272.42, 2264.76, 2297.1],
  ['2013/6/5', 2270.71, 2270.93, 2260.87, 2276.86],
  ['2013/6/6', 2264.43, 2242.11, 2240.07, 2266.69],
  ['2013/6/7', 2242.26, 2210.9, 2205.07, 2250.63],
  ['2013/6/13', 2190.1, 2148.35, 2126.22, 2190.1]
]);
function splitData(rawData) {
  const categoryData = [];
  const values = [];
  for (var i = 0; i < rawData.length; i++) {
    categoryData.push(rawData[i].splice(0, 1)[0]);
    values.push(rawData[i]);
  }
  return {
    categoryData: categoryData,
    values: values
  };
}
function calculateMA(dayCount) {
  var result = [];
  for (var i = 0, len = data0.values.length; i < len; i++) {
    if (i < dayCount) {
      result.push('-');
      continue;
    }
    var sum = 0;
    for (var j = 0; j < dayCount; j++) {
      sum += +data0.values[i - j][1];
    }
    result.push(sum / dayCount);
  }
  return result;
}
function calculateBool(dayCount) {
  var result = [];
  for (var i = 0, len = data0.values.length; i < len; i++) {
    if (i < dayCount) {
      result.push(false);
      continue;
    }

    result.push(true);
  }
  return result;
}


option = {
  title: {
    text: '上证指数',
    left: 0
  },
  tooltip: {
    trigger: 'axis',
    axisPointer: {
      type: 'cross'
    }
  },
  legend: {
    data: ['日K', 'MA5', 'MA10', 'MA20', 'MA30', 'dummy']
  },
  grid: {
    left: '10%',
    right: '10%',
    bottom: '15%'
  },
  xAxis: {
    type: 'category',
    data: data0.categoryData,
    scale: true,
    boundaryGap: false,
    axisLine: { onZero: false },
    splitLine: { show: false },
    min: 'dataMin',
    max: 'dataMax'
  },
  yAxis: {
    scale: true,
    splitArea: {
      show: true
    }
  },
  dataZoom: [
    {
      type: 'inside',
      start: 50,
      end: 100
    },
    {
      show: true,
      type: 'slider',
      top: '90%',
      start: 50,
      end: 100
    }
  ],
  series: [
    {
      name: '日K',
      type: 'candlestick',
      data: data0.values,
      itemStyle: {
        color: upColor,
        color0: downColor,
        borderColor: upBorderColor,
        borderColor0: downBorderColor
      },
    },

    {
      name: 'dummy',
      type: 'line',
      data: calculateBool(30),
      smooth: true,
      lineStyle: {
        opacity: 0.5
      }
    }
  ]
};

What is expected?

Rendering should display either seriesname 1 or seriesname true instead of seriesname -.

What is actually happening?

seriesname - is displayed

[Ovilia]

OK. It can be reproduced now. Marked to be a bug.

[xmatthias]

@Ovilia You will need to use the mouse hover for this so the tooltip shows. It’s not showing seriesname - - but dummy - - as the series is called dummy.

I’ve now also updated the sample to be smaller - so i hope you’re now able to look at the problem ASAP.