ScaleManager (JMRI API)

java.lang.Object
- jmri.ScaleManager

```
public class ScaleManager
extends java.lang.Object
```
Create a list of layout scale objects and provide retrieval methods.
See Scale for details of each scale object.

Since:

4.13.6

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method	Description
`static void`	`addScale(java.lang.String scaleName, java.lang.String userName, double scaleRatio)`	Create a scale instance and add it to the map.
`static Scale`	`getScale(java.lang.String name)`	Get the scale that corresponds to the supplied scale name, otherwise null.
`static Scale`	`getScaleByName(java.lang.String name)`	Get the scale that matches the user name, the scale name, or null.
`static java.util.ArrayList<Scale>`	`getScales()`	Get a list of all scale entries sorted by user name.

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

- Method Detail
  - addScale
```
public static void addScale(java.lang.String scaleName,
                            java.lang.String userName,
                            double scaleRatio)
```
    Create a scale instance and add it to the map.
    
    Parameters:
    
    scaleName - The scale name, such as HO.
    
    userName - The user name. By default the same as the scale name.
    
    scaleRatio - The ratio for the scale, such as 87.1.
  - getScale
```
public static Scale getScale(@Nonnull
                             java.lang.String name)
```
    Get the scale that corresponds to the supplied scale name, otherwise null.
    
    Parameters:
    
    name - The scale name.
    
    Returns:
    
    The selected scale or null.
  - getScales
```
public static java.util.ArrayList<Scale> getScales()
```
    Get a list of all scale entries sorted by user name.
    
    Returns:
    
    The sorted scale list.
  - getScaleByName
```
public static Scale getScaleByName(@Nonnull
                                   java.lang.String name)
```
    Get the scale that matches the user name, the scale name, or null. The user names are searched first. If not found then the scale name is used.
    
    Parameters:
    
    name - The user name or scale name.
    
    Returns:
    
    The selected scale or null.