Re: [jCharts-users] User defined scale calculation

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

you set the rounding to the nearest whole number, 10 to the zero'th power.  java.util.NumberFormat
will round your increment to the nearest whole number, or 100%. Set the rounding to -2 and remove
the user defined scale to see a 'good fitting' scale.



--- Vikram Rajan <vr...@st...> wrote:
> This question is borne of my inability to understand fully the scale calculation algorithm. I am
> trying to get a scale on the Y Axis that starts from 0 and has labels at increments of 5. This
> is to be used along with usePercentSigns(true). How do I set the increment value and the
> rounding power of ten to make this work? 
> 
> Currently, my code looks like this:
> 
>         double[][] data = new double[][]{ { 0.40, 0.60 } };
>         .................
>         DataAxisProperties dataAxisProperties= (DataAxisProperties)
> axisProperties.getYAxisProperties();
>         dataAxisProperties.setUsePercentSigns(true);
>         dataAxisProperties.setUserDefinedScale( 0, 0.05 );
>         dataAxisProperties.setRoundToNearest( 0 ); 
>         ..................
> 
> I am attaching the chart that this has produced.
> 
> Is this possible given the default algorithm? Or do I need to write a custom scale calculator?
> If I do, some pointers would be greatly appreciated.
> 
> thanks
> Vikram
> 
> 
> 

> ATTACHMENT part 2 application/octet-stream name=yesno.jpg



=====
http://nathaniel-auvil.blog-city.com/

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