Support for tooltipOpts in series data

[maplemuse]

I would like to customize the tooltip content on a per-series basis:

var dataOpts = [{
  data: [...],
  label: 'Foo'
},{
  data: [...],
  tooltipOpts: {
    content: 'Bar: %y'
  }
}];
var plotOpts = {
  ...
  legend: {
    show: true
  },
  grid: { hoverable: true },
  tooltip: true,
  tooltipOpts: {
    content: '%y'
  }
}

$.plot($('#plot'), dataOpts, plotOpts);

Basically, I have some series that I want included in the legend, while I have other series that I want to specially format the tooltip content, without the series appearing in the legend.

In the plothover eventhandler, the item has the series data, so it should be possible to change

tipText = that.stringFormat(that.tooltipOptions.content, item);

to some variation of

if (item.series.tooltipOpts !== undefined && item.series.tooltipOpts.content !== undefined){
    tipText = that.stringFormat(item.series.tooltipOpts.content, item);
} else {
    tipText = that.stringFormat(that.tooltipOptions.content, item);
}

[krzysu]

Hi,
that looks like a good idea, but currently I don't have any time to work on flot.tooltip. But you can always develop it by yourself and send pull request if you want. Any contributions are more than welcomed. Have a nice day.