javascript - Google Charts LogScale 不工作

Question

我正在使用 Google Charts 制作条形图，并尝试让图表在垂直轴上使用对数刻度，但由于某种原因它不起作用。我尝试过使用 logScale 和 scaleType 但它们都不起作用。

这是我的代码:

google.charts.load('current', {
  'packages': ['bar']
});
google.charts.setOnLoadCallback(drawChart);

function drawChart() {
  var data = google.visualization.arrayToDataTable([
    ['Vendor', 'Nootropics Depot', 'Pure Nootropics', 'Peak Nootropics', 'Absorb Health'],
    ['ALCAR', 0.07, 0.20, 0.12, 0.24],
    ['Agmatine', 0.13, null, 0.23, null],
    ['Coluracetam', 13.80, 27.49, null, null],
    ['Oxiracetam', 0.47, 0.37, 0.58, 0.63],
    ['Phenibut', 0.22, null, 0.59, 0.60],
    ['Phenylpiracetam', 2.83, 3.33, 5.30, null],
    ['Polygala', 0.42, null, null, null],
    ['Pramiracetam', 1.67, 2.22, 1.60, 2.60],
    ['PRL-8-53', 23.99, null, null, null],
    ['Rhodiola Rosea 3% Rosavins', 0.23, 0.60, 0.32, 0.26],
  ]);

  var formatter = new google.visualization.NumberFormat({
    suffix: 'tablets',
    negativeColor: 'red',
    negativeParens: true
  });
  formatter.format(data, 0);
  var formatter = new google.visualization.NumberFormat({
    prefix: '$',
    negativeColor: 'red',
    negativeParens: true
  });
  formatter.format(data, 1);
  formatter.format(data, 2);
  formatter.format(data, 3);
  formatter.format(data, 4);

  var options = {
    chart: {
      title: 'Cheapest price per gram',
    },
    bars: 'vertical', // Required for Material Bar Charts.
    hAxis: {
      format: 'decimal',
    },
    vAxis: {
      title: 'Price',
      format: '$#',
      minValue: 0.1,
      logScale: true,
    },
    height: 400,
    colors: ['#1b9e77', '#d95f02', '#7570b3']
  };

  var chart = new google.charts.Bar(document.getElementById('chart_div'));

  chart.draw(data, google.charts.Bar.convertOptions(options));

}

JSFiddle 页面:https://jsfiddle.net/rm8vr1p8/

不太确定我做错了什么。我什至尝试过更改垂直轴的值，但它不起作用。我错过了什么？

Answer 1

Material 图表不支持多个选项，包括...
{hAxis,vAxis,hAxes.*,vAxes.*}.logScale

参见 --> Tracking Issue for Material Chart Feature Parity

<小时/>

Material = google.charts.Bar -- 包:['bar']

经典 = google.visualization.ColumnChart -- 包:['corechart']

<小时/>

有一个选项可以使经典图表看起来与 Material 相似...
主题:' Material

请参阅以下工作片段...

google.charts.load('current', {
  packages: ['corechart']
}).then(function () {
  var data = google.visualization.arrayToDataTable([
    ['Vendor', 'Nootropics Depot', 'Pure Nootropics', 'Peak Nootropics', 'Absorb Health'],
    ['ALCAR', 0.07, 0.20, 0.12, 0.24],
    ['Agmatine', 0.13, null, 0.23, null],
    ['Coluracetam', 13.80, 27.49, null, null],
    ['Oxiracetam', 0.47, 0.37, 0.58, 0.63],
    ['Phenibut', 0.22, null, 0.59, 0.60],
    ['Phenylpiracetam', 2.83, 3.33, 5.30, null],
    ['Polygala', 0.42, null, null, null],
    ['Pramiracetam', 1.67, 2.22, 1.60, 2.60],
    ['PRL-8-53', 23.99, null, null, null],
    ['Rhodiola Rosea 3% Rosavins', 0.23, 0.60, 0.32, 0.26],
  ]);

  var formatter = new google.visualization.NumberFormat({
    suffix: 'tablets',
    negativeColor: 'red',
    negativeParens: true
  });
  formatter.format(data, 0);
  var formatter = new google.visualization.NumberFormat({
    prefix: '$',
    negativeColor: 'red',
    negativeParens: true
  });
  formatter.format(data, 1);
  formatter.format(data, 2);
  formatter.format(data, 3);
  formatter.format(data, 4);

  var options = {
    theme: 'material',
    title: 'Cheapest price per gram',
    hAxis: {
      format: 'decimal'
    },
    vAxis: {
      title: 'Price',
      format: '$#',
      minValue: 0.1,
      logScale: true
    },
    height: 400,
    colors: ['#1b9e77', '#d95f02', '#7570b3']
  };

  var chart = new google.visualization.ColumnChart(document.getElementById('chart_div'));
  chart.draw(data, options);
});

<script src="https://www.gstatic.com/charts/loader.js"></script>
<div id="chart_div"></div>