How can we display both label and value on a pieSliceText on an 3d pie chart using google charts?

Iam using Google Chart in Angular 6

I am using

pieSliceText: 'value'

But I need to display both label and value on the pie slice,

I tried using pieSliceText: 'label-and-value'

similar to

pieSliceText: 'value-and-percentage'

But this doesnt work for me

Solution

a couple options...

1) use the following option to label the slices...

legend: {
  position: 'labeled'
}

see following working snippet...

google.charts.load('current', {
  packages: ['corechart']
}).then(function () {
  var data = google.visualization.arrayToDataTable([
    ['Task', 'Hours per Day'],
    ['Work',     11],
    ['Eat',      2],
    ['Commute',  2],
    ['Watch TV', 2],
    ['Sleep',    7]
  ]);

  var options = {
    height: 400,
    is3D: true,
    legend: {
      position: 'labeled'
    },
    pieSliceText: 'value'    
  };

  var chart = new google.visualization.PieChart(document.getElementById('piechart_3d'));
  chart.draw(data, options);
});

<script src="https://www.gstatic.com/charts/loader.js"></script>
<div id="piechart_3d"></div>

2) use the following option to display the value of the slice...

pieSliceText: 'value'

with the above option, the slice will display the formatted value by default.
using object notation, we can provide both the value v: and formatted value f: in the data table.

{v: 11, f: 'Work: 11'}

see following working snippet...

google.charts.load('current', {
  packages: ['corechart']
}).then(function () {
  var data = google.visualization.arrayToDataTable([
    ['Task', 'Hours per Day'],
    ['Work', {v: 11, f: 'Work: 11'}],
    ['Eat', {v: 11, f: 'Eat: 2'}],
    ['Commute', {v: 11, f: 'Commute: 2'}],
    ['Watch TV', {v: 11, f: 'Watch TV: 2'}],
    ['Sleep', {v: 11, f: 'Sleep: 7'}]
  ]);

  var options = {
    chartArea: {
      height: '100%',
      width: '100%',
      top: 12,
      left: 12,
      right: 12,
      bottom: 12
    },
    height: 400,
    is3D: true,
    legend: {
      position: 'none'
    },
    pieSliceText: 'value'
  };

  var chart = new google.visualization.PieChart(document.getElementById('piechart_3d'));
  chart.draw(data, options);
});

<script src="https://www.gstatic.com/charts/loader.js"></script>
<div id="piechart_3d"></div>