question: protected void sqrtLayout ( VisualTable labels ) { Rectangle2D b = getLayoutBounds ( ) ; double breadth = getBreadth ( b ) ; double span = m_hi - m_lo ; double splo = MathLib . safeSqrt ( m_prevlo ) ; double spspan = MathLib . safeSqrt ( m_prevhi ) - splo ; double vlo = Math . pow ( 10 , Math . floor ( MathLib . safeLog10 ( m_lo ) ) ) ; double slo = MathLib . safeSqrt ( m_lo ) ; double sspan = MathLib . safeSqrt ( m_hi ) - slo ; Iterator iter = labels . tuples ( ) ; while ( iter . hasNext ( ) ) { VisualItem item = ( VisualItem ) iter . next ( ) ; reset ( item ) ; double v = item . getDouble ( VALUE ) ; double x = span == 0 ? 0 : ( ( MathLib . safeSqrt ( v ) - slo ) / sspan ) * breadth ; set ( item , x , b ) ; } Index index = labels . index ( VALUE ) ; double step = getLinearStep ( span , breadth / span ) ; if ( step == 0 ) step = 1 ; int r ; for ( double x , v = vlo ; v <= m_hi ; v += step ) { x = ( ( MathLib . safeSqrt ( v ) - slo ) / sspan ) * breadth ; if ( x < - 0.5 ) { continue ; } else if ( ( r = index . get ( v ) ) >= 0 ) { VisualItem item = labels . getItem ( r ) ; item . setVisible ( true ) ; item . setEndVisible ( true ) ; } else { VisualItem item = labels . addItem ( ) ; item . set ( LABEL , m_nf . format ( v ) ) ; item . setDouble ( VALUE , v ) ; double f = spspan == 0 ? 0 : ( ( MathLib . safeSqrt ( v ) - splo ) / spspan ) ; if ( f <= 0 || f >= 1.0 ) { item . setStartVisible ( true ) ; } set ( item , f * breadth , b ) ; set ( item , x , b ) ; } } }
target:  Calculates a quantitative, square root scaled layout.