Include the JS in the template:
<script type="text/javascript" src="https://www.google.com/jsapi"></script>
<script type="text/javascript">
google.load("visualization", "1", {packages:["corechart"]});
</script>
Create a data source.:
from graphos.sources.model import ModelDataSource
queryset = Account.objects.all()
data_source = ModelDataSource(queryset,
fields=['year', 'sales'])
Pass the data_source to a gchart:
from graphos.renderers import gchart
chart = gchart.LineChart(data_source)
You can render this chart in the template by {{ point_chart.as_html }}.