The type of polar graph is designed to represent values radially.

# 1 Example

#### This example shows the total sale and profit per month and filtering per year.

You see the parameterization of the box:

1. Selector type of Polar graph.
2. Column of the sentence with which you want to divide the circumference, in this case the month of the invoice the_month.
3. Filter by combo of the column the_year and thus be able to filter the graph by years.
4. SQL statement to execute, in this case:
Copy
<select>
<columns>
YEAR(invoicedate)  the_year,
MONTH(invoice.invoicedate) <alias name='the_month' />,
SUM(invoiceline.quantity * invoiceline.unitprice) <alias name='total' />,
SUM(invoiceline.quantity * invoiceline.unitprice) - SUM(invoiceline.quantity * track.costprice) <alias name='the_profit'/>
</columns>
<from table='invoice'>
<join table='invoiceline'>
<on>invoice.invoiceid = invoiceline.invoiceid</on>
<join table='track'>
<on>invoiceline.trackid = track.trackid</on>
</join>
</join>
</from>
<group>1,2</group>
<order>1,2</order>
</select>

* Starting from the table of invoices and grouping by year and month, obtaining the total sale and benefit

5. In the series are added the columns 'total' and 'the_profit' one with render columns and another with render area.