Drill in Chart with Tooltips

This pie chart shows how you can have charts in tooltips. It is built of a main-chart (the pie chart) and three drill-in bar charts. If you click into a pie segment a tooltip will show a detailed chart for it.

Parameters for creation of chart

Main Chart:

{rgraph title="Revenue in January by Location" width="600" height="350" type="Pie" marginTop="10" marginLeft="60"
marginRight="80" data="Frankfurt,Munic,Stuttgart/48000,46000,51000" tips_width="350" tips_height="200"
drill_tips="chart1,chart2,chart3" variant="pie3d" radius="80" labelsSticks="1" labelsIngraph="Frankfurt,Munic,Stuttgart"
labelsIngraphBounding="0" labelsIngraphColor="#f0f0f0" marginBottom="0" draw_option="roundRobin()"}revenue1{/rgraph}

Drill-in charts:

{rgraph data="1,2,3,4,5/2000,2000,3500,2500,2600|3200,3100,3200,3300,3300|3100,4100,3200,4400,4500" yaxisScaleMax="5000"
type="Bar" drill_chart="chart1" key="Books,CDs,DVDs" keyPosition="margin"
marginTop="20" marginBottom="35" marginLeft="35" marginRight="15" xaxisTitle="Week" xaxisTitlePos="0.7"}tooltip_canvas{/rgraph}

{rgraph data="1,2,3,4,5/1800,1800,3200,2300,2500|3100,3000,3100,3200,3200|3000,4000,3100,4300,4400" yaxisScaleMax="5000"
type="Bar" drill_chart="chart2" key="Books,CDs,DVDs" keyPosition="margin"
marginTop="20" marginBottom="35" marginLeft="35" marginRight="15" xaxisTitle="Week" xaxisTitlePos="0.7"}tooltip_canvas{/rgraph}

{rgraph data="1,2,3,4,5/2200,2200,3700,2700,2800|3400,3300,3400,3500,3500|3300,4300,3400,4600,4700" yaxisScaleMax="5000"
type="Bar" drill_chart="chart3" key="Books,CDs,DVDs" keyPosition="margin"
marginTop="20" marginBottom="35" marginLeft="35" marginRight="15" xaxisTitle="Week" xaxisTitlePos="0.7"}tooltip_canvas{/rgraph}