Is there a way to define custom legend in highchart - highcharts

I am creating a chart which internally is built using multiple highcharts.I want to create a custom legend for whole chart. Is there a way to show custom legend. Is yes then can someone point me to some example.

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Change bokeh python hovertool tooltip layout

Is there a way to change the layout of the hovertool's tooltips? I mean, bokeh shows the standard square with some information, close to the point and linked by a small triangle.. Is there a way to change this triangle and put a line that connects the tooltip to the point but at some distance (like an annotation), but dynamic as a hovertool tooltip?
Thanks for all!!
standard tooltip
New tooltip type
It is possible but it requires quite some work. You have to create a custom subclass of Tooltip that renders the tooltip the way you want and a custom subclass of HoverTool that uses that tooltip class.

Highcharts colorAxis - Hide or add dynamically

I have a system set up where the user adds a chart and then selects the type they want. If I add the chart with the colorAxis in place, how do I hide it or remove it for those charts where I don't need it?
If I create the chart without the colorAxis, what is the proper way to add the colorAxis? I tried using the addAxis just like you would for any other axis, but there are problems. The remove function removed the colorAxis from the chart object, but not from the chart. It also resulted in an error.
You can destroy colorAxis by remove legend.
chart.legend.destroy();
Example: http://jsfiddle.net/h0rkf05t/

What can I use to implement a doughnut chart in iOS?

I'm looking for a free iOS component that allows me to draw a doughnut chart with text in the center. So far I've only used Code Plot, but that is a full pie chart.
I'm attaching an example of the requirement.
Any help will be much appreciated.
I suggest searching on cocoacontrols.com. They have lots of open source controls for iOS and Mac. I didn't se any specifically called "doughnut chart" but some of the pie charts controls might offer that option.
In fact, it seems that this one does include what you're calling a doughnut chart. It doesn't look like it has built-in support for a label in the middle, but it does create a ring-shaped chart like you want.
You could also always create a pie chart and then put a view on top of it that is transparent except for a white circle in the middle, and then put a label on top of that.
Getting a little more complex you could modify the CorePlot control and add a filled CAShapeLayer to it.
Another option is to create svg chart and use UIWebView to display it. With svg chart, you get much more flexibility with libraries like highcharts and d3js. Here's an example with donut chart:
http://vida.io/documents/Byh8tTakzB59oGa9f
You can embed the link or save svg and display in UIWebView. Saving svg works offline.

high charts with master-detail and handles

I'm using highcharts to build a chart and I need to use the api that it exposes to do certain things. however I would like my chart to be a master-detail type chart like the one in the highstock library but which has the handles on them.
I know i can create a master-detail in highcharts but it does not seem have the handles for dragging the selected range.
In the end I used highstock and found an example with multiple series in the 'master' chart which is called 'navigator' the highstock charts.
Example:
http://jsfiddle.net/davidoleary/NudSK/

Changing the contents of Highcharts legend

When using Highcharts, is it possible to change the contents of the legend to display something other than the series?
For example, I have a scatter chart with just one series but with many elements, so that the element labels obstruct one another and are illegible:
Would it be possible to use the legend to display the element names instead of the series? (each member in the series has a different color so that it is possible to use the legend in this case)
EDIT:
It turns out there isn't any good way to do this, so I wrote my own custom legend. You can find the code here: http://pastie.org/5115536
I hope you find it useful
Highcharts allows to show data points instead of series name in the in the legend. But, Unfortunately its only for Pie charts type:pie.
There is a default option available for the Pie Chart though undocumented in the API.
legendType: 'point',
If you try to set it for other type of chart, Legend does not gets rendered.

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