NumberPrecisionReducer (OpenJUMP 2.4.0 API)

java.lang.Object
- com.vividsolutions.jump.geom.precision.NumberPrecisionReducer

```
public class NumberPrecisionReducer
extends Object
```
Reduces the precision of a number by rounding it off after scaling by a given scale factor.

Constructor Summary

Constructors
Constructor	Description
`NumberPrecisionReducer()`
`NumberPrecisionReducer(double scaleFactor)`	A negative value for scaleFactor indicates that the precision reduction will eliminate significant digits to the left of the decimal point.

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`double`	`reducePrecision(double d)`
`static double`	`scaleFactorForDecimalPlaces(int decimalPlaces)`	Computes the scale factor for a given number of decimal places.
`void`	`setScaleFactor(double scaleFactor)`

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - NumberPrecisionReducer
```
public NumberPrecisionReducer()
```
  - NumberPrecisionReducer
```
public NumberPrecisionReducer(double scaleFactor)
```
    A negative value for scaleFactor indicates that the precision reduction will eliminate significant digits to the left of the decimal point. (I.e. the scale factor will be divided rather than multiplied). A zero value for scaleFactor will result in no precision reduction being performed. A scale factor is normally an integer value.
    
    Parameters:
    
    scaleFactor - scale factor
- Method Detail
  - scaleFactorForDecimalPlaces
```
public static double scaleFactorForDecimalPlaces(int decimalPlaces)
```
    Computes the scale factor for a given number of decimal places. A negative value for decimalPlaces indicates the scale factor should be divided rather than multiplied. The negative sign is carried through to the computed scale factor.
    
    Parameters:
    
    decimalPlaces - number of decimal places
    
    Returns:
    
    the scale factor
  - setScaleFactor
```
public void setScaleFactor(double scaleFactor)
```
  - reducePrecision
```
public double reducePrecision(double d)
```