Bug 212291 SWT Chart render engine always uses 96 DPI(Display) resolution
chart/org.eclipse.birt.chart.engine/src/org/eclipse/birt/chart/computation/withaxes/PlotWith2DAxes.java
bo.setWidth( axisHeight );
			}
			else
			{
				bo.setHeight( axisHeight );
			}
		}
		
		
		
		else if ( bo.getWidth( ) * bo.getHeight( ) < 0 )
		{
			double dBase = bo.getHeight( ) < 0 ? Math.abs( bo.getHeight( ) )
					: Math.abs( bo.getWidth( ) );
			int iDPCount = 1;
			double dTotalWidth = dBase * iDPCount;
			
			
			if ( bo.getWidth( ) < 0 )
			{
				bo.setWidth( dTotalWidth );
			}
			else
			{
				bo.setHeight( dTotalWidth );
			}
		}
	}
}