RE: [jCharts-users] Y-Axis range - How is it set ?

[Nathaniel G. A. <nat...@ya...>]

when you call: yAxis.setRoundToNearest(0), you are telling it to round to the nearest 10 to the
zero'th power, or the nearest whole number.  if you used the call: yAxis.setRoundToNearest(-3),
that would say round to the nearest 10^-3, or .001.

Looks like you might want to round to the nearest 10^-6



--- "Liu, Louis (Exchange)" <LL...@Be...> wrote:

> 
> Hi, Nathaniel:
> 
> 	I did yAxis.setUserDefinedScale( 0, 0.000001); and
> yAxis.setRoundToNearest(0); I also set yAxis.setNumItems((int)maxY +2);
> and this seems to have made it work (Note: maxY is the maximum of Y
> data). I have also attached a code section below. I did read the User's
> guide downloaded from the Web but yet to experience more to utilize many
> classes of JCharts. Can you tell me how I can use ScaleCalculator to
> adjust the Y-axis scale? What is the difference between Auto- and
> UserDefinedScaleCalculator ? Commented code did not work as expected.
> Can you see why?
> 
>             AxisProperties axisProperties= new AxisProperties();
>             DataAxisProperties yAxis= (DataAxisProperties)
> axisProperties.getYAxisProperties();
>             
> //            UserDefinedScaleCalculator myScaleCalculator = new
> UserDefinedScaleCalculator(0.0, 0.001);
> //            myScaleCalculator.setMinValue(0);
> //	      myScaleCalculator.setMaxValue(maxY);
> //            myScaleCalculator.computeScaleValues();
> //            yAxis.setScaleCalculator(myScaleCalculator);
> //((DataAxisProperties)axisProperties.getYAxisProperties()).setUserDefin
> edScale(0, maxY);
>                                              
>             LegendProperties legendProperties= new LegendProperties();
> 
>             Dimension dimension=jPanel_Graph.getSize();
>             AxisChart axisChart= new AxisChart( dataSeries,
> chartProperties, axisProperties, legendProperties, dimension.width,
> dimension.height );
> 
> 
> 
> -----Original Message-----
> From: jch...@li...
> [mailto:jch...@li...] On Behalf Of
> Nathaniel G. Auvil
> Sent: Tuesday, September 28, 2004 7:32 PM
> To: jch...@li...
> Subject: Re: [jCharts-users] Y-Axis range - How is it set ?
> 
> 
> what is your rounding factor set to?  Did you take a look at the users
> guide?
> 
> 
> 
> --- "Liu, Louis (Exchange)" <LL...@Be...> wrote:
> 
> > I have just created a line chart. My data values are all less that 1,
> > ranging from 0.01 to 0.8. The Y axis scale is always 0 to 4 which
> makes
> > my chart lie low and leave a large portion of empty space above it.
> How
> > is the Y axis range is calculated? How do I override it?
> > 
> >  
> > 
> > Louis
> > 
> > > 
> > 
> >
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