## Interface RepresentativeFraction

• All Known Implementing Classes:
`RepresentativeFractionImpl`

```@UML(identifier="MD_RepresentativeFraction",
specification=ISO_19115)
public interface RepresentativeFraction```
A scale defined as the inverse of a denominator. This is derived from ISO 19103 `Scale` where denominator = 1 / scale.

Implementations are encouraged to extend `Number` in a manner equivalent to:

```  class MyRepresentedFraction extends Number implements RepresentedFraction {
...
public double doubleValue() {
return 1.0 / (double) denominator;
}
public float floatValue() {
return 1.0f / (float) denominator;
}
public long longValue() {
return 1 / denominator; // Result is zero except for denominator=[0,1].
}
...
}
```
Since:
GeoAPI 2.1
Author:
Ely Conn (Leica Geosystems Geospatial Imaging, LLC)
• ### Method Summary

All Methods
Modifier and Type Method Description
`double` `doubleValue()`
Returns the scale value in a form usable for computation.
`boolean` `equals​(Object other)`
Compares this representative fraction with the specified object for equality.
`long` `getDenominator()`
The number below the line in a vulgar fraction.
`int` `hashCode()`
Returns a hash value for this representative fraction.
• ### Method Detail

• #### doubleValue

`double doubleValue()`
Returns the scale value in a form usable for computation.
Returns:
{@code 1.0 / (double) {@linkplain #getDenominator()}.
Since:
GeoAPI 2.2
• #### getDenominator

```@UML(identifier="denominator",
obligation=MANDATORY,
specification=ISO_19115)
long getDenominator()```
The number below the line in a vulgar fraction.
Returns:
The denominator.
• #### equals

`boolean equals​(Object other)`
Compares this representative fraction with the specified object for equality. ``` RepresentativeFraction``` is a data object - `equals` is defined acoording to `getDenominator()`;

Implementations should match the following:

``` public boolean equals(Object object) {
if (object instanceof RepresentativeFraction) {
final RepresentativeFraction that = (RepresentativeFraction) object;
return getDenominator() == that.getDenominator();
}
return false;
}
```
Overrides:
`equals` in class `Object`
Parameters:
`other` - The object to compare with.
Returns:
`true` if `other` is a `RepresentedFraction` with the same denominator value.
• #### hashCode

`int hashCode()`
Returns a hash value for this representative fraction. `RepresentativeFraction` is a data object - `hashcode` is defined according to `getDenominator()`.

Implementations should match the following:

``` public int hashCode() {
return (int) getDenominator();
}
```
Overrides:
`hashCode` in class `Object`
Returns:
A hash code value for this representative fraction.