Charts in PDF Output Show Unexpected Results
Charts, when viewed in PDF output, have different
levels of interaction support, depending on the version of Adobe Acrobat Reader and the style
of chart element.
Adobe Reader version 5 does not support tooltips. Drill up and down and Go to links have limited support, due to technical limitations. Only rectangular areas in charts, such as bars, columns, horizontal labels on the axis, or legend labels can be enabled for drill or Go to interaction. Non-rectangular areas, such as pie slices in pie charts, cannot be enabled for drill or Go to interactions.
Adobe Reader version 6 and 7 supports tooltips, drill up and down, and Go to links for all chart types. When chart elements overlap or are separated by only a few pixels, the interactive region may be smaller than the area shown.