Printer friendly version
 Square Dance Resource Net  (Home)ArticlesCallers and CuersClubsEventsResourcesChoreographyMusicFrequently Asked QuestionsAcademy for Advanced and Challenge Enthusiasts  (AACE)Ceder Chest Definition BooksCeder Square Dance System  (CSDS)Square Rotation Program  (SQROT)Vic Ceder - Square Dance CallerDefinitions of square dance calls and conceptsMore square dance DefinitionsLists of square dance calls and conceptsDigital music informationSquare dance linksBande DéssineesLos Olivos Honey BeesChocolate BarsBeanie BabiesPokémon Trading CardsSend us feedback
Square Rotation Program (SQROT)
Square Rotation Program (SQROT)
SQROT 5.44  (August 2019)  
is the latest version 
 SQROT Main Page  |  Online Purchase     
 Help  |  FAQ  |  Documentation  |  Technical Details  |  Revision History  |  Vic's To Do List 
 Download -->  Rotation Card Sets  |  Program Upgrade 
 Sample screens -->  Main  |  Dynamic  |  Tip Display by Couple  |  Tip Display by Square  |  Settings 
 Rotations (active online)  |  rotation administrator 

How rotations are generated by the Square Rotation Program Square Rotation Program.

For each tip, the program proceeds as follows:
  1. If the number of 'ready' couples is not a multiple of 4, the program determines who will sit out by selecting couples who have sat out the fewest number of times, using a ratio of number of tips danced vs. number of tips sat out. If several couples have the same ratio, couples to sit out will be selected at random from those couples.
  2. A random rotation is generated.
  3. The following procedure is repeated until no more changes are possible or until the user clicks the 'abort process' button:
    1. For each pair of couples, a value is calculated indicating how often those two couples have danced together. This value is then subtracted from the optimal number of times that the couples should have danced together. The resulting value is then squared.
    2. All values are added together to produce a 'chi-square-like' statistic.
    3. Two couples (in different squares) are swapped within the rotation and the chi-square statistic is recalculated. If the new statistic is less than the old statistic, the new rotation is saved, otherwise, the previous rotation is restored.
    4. The process continues until the program has tried swapping every couple with every other couple and no decrease has occurred within the statistic.
  4. Square numbers are then assigned and 'optimized' in a similar manner (also using a 'chi-square' statistic) so that dancers move around between different squares on the floor.
09-May-2021 17:53:02
Copyright © 2021 Vic Ceder.  All Rights Reserved.