What about resize? Can be chart area resized by height once yAxis deleted?

In addition it would be great to supply this second axis with options to use different units. In my example we measure energy consumption and show kWh on the first axis. The user now is able to decide, qhats to be shown on the seconds axis. Like Money, CO2, ... Right now, the whole graph has to be recalculated, this could be avoided i believe.

the small plugin at:
http://jsfiddle.net/highcharts/YDWQC/
works only there's a problem with the link to the highcharts script, i wrote:
<script src="http://code.highcharts.com/highcharts.js"></script>
worked! (with some bugs...)

Anyway, I added an Axis.remove() method to the plugin. Not sure how it will keep references to series and axes, but it is probably good as a starting point.

Nevermind, I found an easy solution for what I am trying to accomplish. I'm just using:

series.hide();
series.show();

Thanks a lot, Torstein. Your code is exactly what I was looking for.

I tried searching to see if someone had written code for Axis.remove(), but I couldn't find it. If it's easy for you to do, could you write an Axis.remove() method? :)

and either the possibility to pass an array of series or
with redraw true/false parameter to save cpu time

i badly need this feature. In my application i'm creating dynamic series based on user clicks ( with some input values ). At some point of time these series need another Y-axis. I have to redraw the whole graph or additionally create more Y-axis while initiating the chart ( which show white space and looks awkward ) .

I completely agree, this would be a fantastic feature

Also what Jim Rubenstein still holds true the text has not been updated yet!!!

Without this feature highcharts in my opinion lose 90% of there value add

Yes, very very important feature! I obtain data dynamically via ajax calls and never know ahead of time which axes I need. Not being able to add/remove axes dynamically kills the point of adding series dynamically.

This would an ideal feature for the same reason as above; I want to be able to let the user compute trending data based on the series present after the initial series have been drawn.

You're right, the info text is wrong. I've corrected the text.

This feature is actually outlined on the feature list for Highcharts (here: http://www.highcharts.com/component/content/frontpage):

"Through a full API you can add, remove and modify series, axes or points at any time after chart creation."

There's no API to add a new Axis object to the Axes list (as the Axis object is "private" in the api)