Constructor Detail

• SpearmanRankCorrelation

  public SpearmanRankCorrelation()

Method Detail

• execute

  public void execute(DataContainer<T> container)
               throws MissingPreconditionException

  Description copied from class: Algorithm
  Executes the previously initialized Algorithm.

  Specified by:

  execute in class Algorithm<T extends RealType<T>>

  Throws:

  MissingPreconditionException

• calculateSpearmanRank

  public <T extends RealType<T>> double calculateSpearmanRank(TwinCursor<T> cursor)

  Calculates Spearman's Rank Correlation Coefficient (Spearman's rho) for two images.

  Parameters:

  cursor - A TwinCursor that iterates over two images

  Returns:

  Spearman's rank correlation coefficient (rho) value

• calculateSpearmanRank

  public double calculateSpearmanRank(double[][] data)

  Calculates Spearman's Rank Correlation Coefficient (Spearman's rho) for two images.

  Parameters:

  data - A 2D array containing the data to be ranked

  Returns:

  Spearman's rank correlation coefficient (rho) value

• getSpearmanDF

  public int getSpearmanDF(int n)

  Returns degrees of freedom for Spearman's rank correlation.

  Parameters:

  n - - N (number of data pairs)

  Returns:

  Spearman's rank degrees of freedom.

• getTStatistic

  public double getTStatistic(double rho,
                              int n)

  Returns associated T-Statistic for Spearman's rank correlation.

  Parameters:

  rho - - Spearman's rho

  n - - N (number of data pairs)

  Returns:

  Spearman's rank correlation t-statistic

• rankValues

  public double[] rankValues(double[] sortedVals)

  Returns sorted rankings for a list of sorted values.

  Parameters:

  sortedVals - - The sorted absolute values

  Returns:

  ranked sorted list of values

• calculateRho

  public double calculateRho(double[] x,
                             double[] y)

  Calculates Spearman's rho (Pearson's correlation coefficient on ranked data).

  Parameters:

  x - - One array of rankings (may include ties)

  y - - ditto.

  Returns:

  Spearman's rho.

• processResults

  public void processResults(ResultHandler<T> handler)

  Description copied from class: Algorithm
  A method to give the algorithm the opportunity to let its results being processed by the passed handler. By default this methods passes the collected warnings to the handler and sub-classes should make use of this by adding custom behavior and call the super class.

  Overrides:

  processResults in class Algorithm<T extends RealType<T>>

  Parameters:

  handler - The ResultHandler to process the results.