Lists (Starlink-UK API)

java.lang.Object
- uk.ac.starlink.ttools.func.Lists

```
public class Lists
extends Object
```
Functions which operate on lists of values.
Some of these resemble similar functions in the Arrays class, and in some cases are interchangeable, but these are easier to use on non-array values because you don't have to explicitly wrap up lists of arguments as an array. However, for implementation reasons, most of the functions defined here can be used on values which are already double[] arrays (for instance array-valued columns) rather than as comma-separated lists of floating point values.

Since:

6 Jan 2015

Author:

Mark Taylor

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method and Description
`static int`	`countTrue(boolean... values)` Returns the number of true values in a list of boolean arguments.
`static double`	`max(double... values)` Returns the maximum of all the non-blank supplied arguments.
`static double`	`mean(double... values)` Returns the mean of all the non-blank supplied arguments.
`static double`	`median(double... values)` Returns the median of all the non-blank supplied arguments.
`static double`	`min(double... values)` Returns the minimum of all the non-blank supplied arguments.
`static double`	`stdev(double... values)` Returns the population standard deviation of the non-blank supplied arguments.
`static double`	`sum(double... values)` Returns the sum of all the non-blank supplied arguments.
`static double`	`variance(double... values)` Returns the population variance of the non-blank supplied arguments.

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

- Method Detail
  - sum
```
public static double sum(double... values)
```
    Returns the sum of all the non-blank supplied arguments.
    
    Parameters:
    
    values - one or more numeric values
    
    Returns:
    
    sum of values
  - mean
```
public static double mean(double... values)
```
    Returns the mean of all the non-blank supplied arguments.
    
    Parameters:
    
    values - one or more numeric values
    
    Returns:
    
    mean of values
  - variance
```
public static double variance(double... values)
```
    Returns the population variance of the non-blank supplied arguments.
    
    Parameters:
    
    values - one or more numeric values
    
    Returns:
    
    population variance of values
  - stdev
```
public static double stdev(double... values)
```
    Returns the population standard deviation of the non-blank supplied arguments.
    
    Parameters:
    
    values - one or more numeric values
    
    Returns:
    
    population standard deviation of values
  - min
```
public static double min(double... values)
```
    Returns the minimum of all the non-blank supplied arguments.
    
    Parameters:
    
    values - one or more numeric values
    
    Returns:
    
    minimum of values
  - max
```
public static double max(double... values)
```
    Returns the maximum of all the non-blank supplied arguments.
    
    Parameters:
    
    values - one or more numeric values
    
    Returns:
    
    maximum of values
  - median
```
public static double median(double... values)
```
    Returns the median of all the non-blank supplied arguments.
    
    Parameters:
    
    values - one or more numeric values
    
    Returns:
    
    median of values
  - countTrue
```
public static int countTrue(boolean... values)
```
    Returns the number of true values in a list of boolean arguments. Note if any of the values are blank, the result may be blank as well.
    
    Parameters:
    
    values - one or more true/false values
    
    Returns:
    
    number of elements of values that are true

Class Lists

Method Summary

Methods inherited from class java.lang.Object

Method Detail

sum

mean

variance

stdev

min

max

median

countTrue