<graph string='Sale Paid Grapg' type="pivot"> <field name='section_id' type="row"/> <field name='date' type="col"/> <field name='paid_amount' type="measure"/> </graph>
graph type 指定默认图表类型 可选值有 :pivot, bar, pie, line
field type 指定显示属性 col代表纵轴 row代表横轴。