The numeric axis is going to incrementally plot data points across a range based on the data. You can use minimum, maximum and majorUnit to specify the lowest, highest and increments but it will not plot data at inconsistent intervals.
> But I need to change the data displayed in the Y Axis, at this moment the Chart autogenerates these Values with the values specificated in the Series
> var lineChart = new YAHOO.widget.LineChart( "linechart", myDataSource,
> series: seriesDef,
> xField: "time",
> yAxis: currencyAxis, ---> I'd like to set this to [-1100, 1000, 1110]
> dataTipFunction: getYAxisDataTipText,
> //only needed for flash player express install
> expressInstall: "assets/expressinstall.swf"