[jCharts-users] Bug in percentage sign implementation?

[Vikram R. <vr...@st...>]

If I use the dataAxisProperties.setUsePercentSigns() to set the percent =
signs on the data axis, I always get the format of the labels as 10.00%, =
20.00%, which is not really what the developer would want in normal =
cases. I am using a user-defined scale here. A snapshot of the code ...

        DataAxisProperties dataAxisProperties =3D (DataAxisProperties) =
axisProperties.getYAxisProperties();
        dataAxisProperties.setUsePercentSigns(true);
        dataAxisProperties.setNumItems(20);
        dataAxisProperties.setUserDefinedScale(0, 0.1);
        dataAxisProperties.setRoundToNearest( -2 );

I looked into the code for the NumericTagGroup and found the lines that =
were causing it (lines 118 to 129). Reproduced the code below.

  //---TRIM OFF DECIMAL PLACES IF ROUND TO WHOLE NUMBER
  if( roundingPowerOfTen >=3D 0 )
  {
   numberFormat.setMaximumFractionDigits( 0 );
   numberFormat.setMinimumFractionDigits( 0 );
  }
  else
  {
   numberFormat.setMaximumFractionDigits( -roundingPowerOfTen );
   numberFormat.setMinimumFractionDigits( -roundingPowerOfTen );
  }


What I suggest is that we change the minimum fraction digits to be zero =
when the rounding power of ten is less than zero. This will ensure that =
if the computed increment is a whole number, the data axis labels will =
not be displayed as fractions. Nathan, what do you think?

- Vikram Rajan