Setting a hard minimum axis value in Google Charts API
you need to set viewWindow like this:
var data = new google.visualization.DataTable();data.addColumn('string', 'Date');data.addColumn('number', 'Uptime');data.addColumn('number', 'Downtime');data.addRows([ ['Dec 1, 1830', 99.875, 0.125], ['Dec 8, 1830', 99.675, 0.325], ['Dec 15, 1830', 99.975, 0.025], ['Dec 22, 1830', 100.0, 0.0]]);var chart = new google.visualization.ColumnChart(document.getElementById('chart_div'));chart.draw(data, {width: 400, height: 240, isStacked: true, vAxis: { title: "Percentage Uptime", viewWindowMode:'explicit', viewWindow:{ max:100, min:99.8 } } } );//edited for newer version of api
I had a similar problem and had to specify the property as "min" not "minValue"
vAxis: { viewWindowMode:'explicit', viewWindow: { max:100, min:99.8 }}