Combo Chart
A combo chart is a combination of two column charts, two line graphs, or a column chart and a line graph. You can make a combo chart with a single dataset or with two datasets that share a common string field. In other words, a chart that lets you render each series as a different marker type from the following list: line, area, bars, candlesticks, and the stepped area is called a combo chart.
Steps for adding Google Combo Charts to your Website:-
To use Google Combo Chart on your website, add a link to the charts loader.
After this, add a div with a unique id. Then, we have to load Google Graph API.
Load the Visualization API with the desired package name. In our case, it is "corechart".
Set a callback function.
The visualization API is:- google.charts.load('current', {'packages':['corechart']})
The callback function will be:- google.charts.setOnLoadCallback(draw_my_chart)