d3.js NVD3手动触发工具提示

I have a bar graph and a table that are made using the same data. I want to make it so that when I hover over a cell in the table, the corresponding bar in the graph is highlighted and shows the tooltip. I'm having a difficult time finding a way to manually trigger the tooltip to show up. .trigger('hover'), .trigger('mouseover'), and .trigger('mouseenter') on the correct bar don't do it.I have a bar graph and a table that are made us