How to draw border around the chart area in Google Charts?

Question

I need a border around just the chart area and not the whole chart. I can't find what property to set. This is in the Google Visualization API.

Answer 1

The appropriate option is undocumented. You need to set the chartArea.backgroundColor.stroke and chartArea.backgroundColor.strokeWidth options. The stroke option controls the color of the border, and takes any valid HTML color string. The strokeWidth option controls the width of the border, and takes an integer for the width in pixels:

chartArea: {
    backgroundColor: {
        stroke: '#4322c0',
        strokeWidth: 3
    }
}