Hi folks,
We recently upgraded our Flash-based FusionCharts to JS-only (version 3.4). Our clients have noticed a slowdown in chart rendering speed, and we're looking for ways to improve performance. We regularly request large amounts of data at a time (up to 5 years of daily data), so the slowness is most noticeable on these large date ranges.
We noticed that one way to cut down chart rendering time considerably is to set drawAnchors = 0. This speeds up chart rendering significantly (from 7 to 2 seconds, for example). Right now, we're drawing anchors, but setting them to transparent so we can use tooltips. We can't lose the tooltip functionality, so I'm wondering if either of the following is possible:
1) Is there a way to include tooltips without drawing the anchors?
2) If not, is there any way to split the chart rendering into stages? E.g., draw the chart first without anchors, and then later render the anchors and tooltips?
Any other performance improvement ideas you have would definitely be welcome, too. Thanks!