I have plotted the google line chart, which has 3 series with multi axis graph. When I add the 3rd series which need draw only one point again hAxis:0 to vAxis:0.
Please fine the data and chart as below.
function drawChart() {
var data = google.visualization.arrayToDataTable([
['Flow', 'Head', 'Efficiency', 'Point'],
[0, 92.1165, 0, null],
[71.0783, 90.0421, 50, null],
[106.6014, 87.8718, 60, null],
[139.0220, 83.2687, 65, null],
[158.8823, 79.4878, 65.9, null],
[172.5161, 75.8211, 65, null],
[203.9705, 64.874, 60, null],
[231.8823, 53.5638, 50, null],
[234.0294, 52.5841, 49.1, null],
[100, null, null, 85]
]);
var options = {
title: 'Lewis Pump Curve',
curveType: 'function',
legend: { position: 'bottom' },
series: {
0: { targetAxisIndex: 0 },
1: { targetAxisIndex: 1 },
2: { targetAxisIndex: 1 },
3: { targetAxisIndex: 3, type: 'Scatter' }
},
vAxes: {
0: { logScale: false, title: 'Head' },
1: {
logScale: false, title: 'Efficiency'
}
},
hAxis: {
title: 'Flow'
},
pointSize: 5
};