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Golf Handicapper Version 4.2 Golf Handicapper is a combination golf score data base and handicap calculator. It holds the most recent scores of golf players. When a player enters a new score, the program automatically calculates their current handicap, their net score for this game, and their handicap for the next game. The program can be used by an individual player, a team of players, or an entire golf club. You run the program by typing GOLF at the DOS prompt. When the program runs, it will display a list of data files on the disk and ask you which file to load. The default file name is GOLF. You would normally just press ENTER to choice this name. However, you can create separate files by using different names if you like. If the program does not find a file with that name on the disk, it assumes that this is a new file. It then creates a file with this name. Actually, it creates two files. One has the extension NAM and contains the players' names. The other has the extension SCR and holds the players' scores. When you create a new file, the program will ask you some preliminary questions. First, it will ask you for the maximum number of players you will put in the data file. For example, if you plan to put between 100 and 150 players in the file, input 150 as the maximum number. You cannot change this later, so be sure you allow for enough players. On the other hand, the computer must reserve memory for all these players, so do not input a number higher than you might really need. Next, the computer will ask for the number of games to save for each player. Just input the number of games you want the computer to keep in memory. For example, if you choose 20, the computer will hold up to 20 scores for each player. If you input a 21st game score, the computer will throw away the records of game 1 before adding game 21 to the file. Again, do not choose a number larger than you really need, because the data takes up room in memory. Next, the computer will ask you for the course rating. This is needed to compute a player's handicap index and actual handicap. If you will be playing on several different courses, input the course rating for the one you use the most. You will have the chance to input the course rating each time you play a game and input the score, but the course rating you input here will be the default course rating. Next, the computer will ask you for the course slope, which is also needed to compute the handicap index and handicap. The index you input here will be the default slope when the program asks you for the course slope when you input each new score. It will also be the slope used to compute your handicap for your next game, under the assumption that your next game will be played on your normal course. However, if you do not play your next game on your normal course, Golf Handicapper will use the actual slope for the course you do play on. See Appendix A for for information on the procedure for computing handicaps. Next, the computer will ask for a heading to put at the tops of pages that it prints out. This could be something like "Golf scores for 1991." Then it will ask you for the percentage of a handicap to use when computing net golf scores. The program then shows you the file modification menu. This menu has 7 options: The first option in the file modification menu is to change the course rating. You would use this only if you recalculate the rating for your golf course. The program will ask you for both the course rating and the course slope if you select this option. The second option in this menu is to add a player. If you select this, the program will tell you what the highest player number already in use is. It will then ask what number to assign to the player you are adding. The default is the lowest number not already in use. This is usually one more than the highest number already in use. However, it can be lower if you have deleted a player from the data base, leaving a "hole" in the player list. In such a case, you would have a choice of filling the hole in the list by choosing the default number or inputting a higher number. After you have input the player's number, the computer will ask you to input the player's name. You can abort inputting a player by just pressing ENTER. If you do input a player's name, the computer will ask you to input the player's most recent scores, the course rating and slope of the course where the game was played, and the date the game was played. Input this information for each game, starting with the oldest games. The computer will continue asking you for information on games until it reaches the maximum number of games (as explained above). If the player has played less than the maximum number of games, just press ENTER alone when you run out of scores. The computer will then go back to the file modification menu. The next choice in the menu is to delete a player from the data base. If you choose this option, the computer will ask you to input either the player's name or number. You can abort deleting a player by just pressing ENTER when the computer asks for this information. The fourth choice in the file modification menu is to correct scores. This allows you to correct the scores of individual players if you discover that you have made a mistake while inputting a player's scores. You might have made such a mistake while adding the player in the first place, or while inputting a new score from the player's menu (explained below). When you select this option, the computer will first ask you to input either the name or the number of the player whose scores you wish to correct. After you input this information, the computer will show you all the game information on record for that player. You will have a choice of changing the score, date, or course specs (course rating and slope) for any game. Press either the S, D, or C key to select which to change. You also may press the R key to return to the file modification menu. After you choose what to change, the computer will ask you for the number of the item to change. Input the number on the row of the item to change. For example, to change score number 2, input 2. The computer will then ask for the new value of the item you are changing. When you have input the new value for the item, the computer will show the new record for the player's scores. It will then ask you again what you wish to change. This allows you to correct any number of items for each player. When you are finished changing the data for one player, press R to go back to the file modification menu. The next item on the file modification menu is to change the page heading. This is primarily in case you made a mistake when you typed in the heading you want at the tops of printed pages. The next item on the file modification menu is to change the percentage of the handicap you want to use when the computer calculates the net score. You would use this if you made a mistake when you typed in this figure, or you change your mind about what percentage you want. Note that if you change this, it retroactively changes all net scores for all players. The last choice on the file modification menu is to go back to the main menu. After you exit the file modification menu, the program will show you the main menu. This menu has six choices. The first choice is to load a new file. You only use this option if you have several score files and you need to switch between them. The second main menu option is to go back to the file modification menu. If you load an existing file when you run the program instead of creating a new file, the computer goes directly to the main menu, rather than the file modification menu. This option on the main menu lets you get back to the file modification menu if you need to. The third choice in the main menu is the player's menu. This is the menu that will normally be displayed when the players have access to the computer to input their scores. At the top of the screen, you will see the lowest gross and net scores of the season. If any scores have been entered today, the lowest gross and net scores of the day will be displayed also. The player's menu has three options: to see scores, to add a score, or to quit (go back to the main menu). The player would press S to see scores, A to add scores to the file, or Q to go back to the main menu. If the player presses S, the computer will ask for the player's name or number. When the player inputs this information, the computer will display all information in the file on that player's scores. If the player presses A, the computer will ask for the player's name or number. It will then ask for the player's score. After you input the score, the computer will ask for the course rating and then the course slope. If you just press ENTER without inputting a number for either of these questions, the computer will use the course values you entered when you set up the file. The computer will then display the player's handicap and net score. Handicaps are computed using the USGA handicap formula (See Appendix A for more information on this). If the player has played less than five games, no handicap can be calculated using this formula. The net score is the gross score minus the handicap times the fraction (percentage) of the handicap to take (as established when the file was created). Both the handicap and net score are rounded off to the nearest whole number. The computer will then ask for the date of the game. This information is stored with the scores. The computer will then display the player's handicap for the next game. While the player is looking at this, it will add the player's new score to the data file on disk. If the player already has the maximum number of scores, it will delete the oldest score. The computer will then ask you to press the space bar to continue. After you press the space bar, the computer will return to the player's menu. If the space bar is not pressed within 60 seconds, the computer will return to that menu anyway. The player's menu has a screen saver function. If no choice is made for 60 seconds, the screen blanks and a message is displayed telling the players to press any key to get their menu back. This message moves around the screen every ten seconds to prevent it from being burned in. The fourth option in the main menu is to display data on a player. If you choose this option, the computer will ask you to input a player's name or number. You also may input the word "ALL" (without the quotes), to see the data on all players. If you ask for all scores, the computer will ask if you want the players sorted alphabetically. This sorting can take a while, so you should only ask for it if you really want it. The sorting does not affect the order of the names in the disk file or even the list in memory. It only affects the order in which the names are printed out this time. The computer will then ask if you want the short form. In the short form, only the scores are printed out. You will see each gross score, followed by a colon, followed by the net score after the handicap is deducted. The lowest net score will have an asterisk after it. In the long form, dates, gross scores, handicaps, net scores, course ratings and slope, and index at the time of that game are all output. The lowest net score is marked with an asterisk. The computer will then ask you if you want hard copy. If you press the <Y> key, the computer will ask you to prepare the printer, then press the space bar when the printer is ready. If you have asked for all players and have not asked for hard copy, the screen will pause for each player until you press the space bar. You may stop the listing by pressing the Esc key instead of the space bar. If you are getting hard copy, the screen will not pause after each player. You can stop a hard copy listing by pressing the Esc key. After it shows you the data on a player (or all players), the computer will ask for the name or number of another player to display data on. If you do not want the scores of another player displayed, just press the ENTER key. The fifth choice in the main menu is to see and possibly reset the lowest scores on record. When you choose this option, the computer displays the names and scores of the players with the lowest gross score (before handicap) and the player with the lowest net score, both for the season and the day. The computer updates these scores each time a player enters a score during a handicap calculation. When the computer displays these low scores, it asks if you would like to reset the low score record. If you press <Y>, the computer clears the low score record so that it can begin keeping track of the lowest score during the next time period. Note: any time you use the "File Modification Menu" option, the low score record is automatically adjusted based on all the scores in the record. If you want the low scores to stay cleared after using the "File Modification Option," you must clear them again. The last option in the main menu is to end the program. This will return you to DOS. You should always exit the program by returning to the main menu and choosing this option. This insures that the files are properly updated before the program ends. It also writes the low score for the day into a file with the same name as your other data (such as GOLF) and the extension LSD (low score data). This file can be loaded into most word processors or file editors. You also can get a printed copy of it by typing COPY filename.LSD PRN at the DOS prompt. Making menu selections You can select an option from a menu by pressing the number at the top of your keyboard that corresponds to the one beside your choice. You should not press the ENTER key after pressing this number. You also can select an option using the cursor keys and the ENTER key. Pressing either the up or down cursor key will cause the selection bar to appear on the menu. You can then move the selection bar on the menu with the up and down cursor keys. When the selection bar is on the option you want to choose, press the ENTER key to make that selection. Registering Golf Handicapper This program is distributed as shareware. This means that you may use it for a trial period to see if you want to keep using it. (One or two months is a reasonable trial period.) If you decide that you intend to keep using this program, please pay for it by sending a check for $25.00 to: David Leithauser Leithauser Research 4649 Van Kleeck Drive New Smyrna Beach, FL 32169 Regardless of whether you decide to register this program, you are free to give away copies to anyone you like. There are two minor restrictions. First, you must distribute the program and the documentation (the instructions) together. Second, you must not change either the program or the documentation in any way. Customizations The primary function of Leithauser Research is providing custom programs of all types. If you would like to have Golf Handicapper customized to fit some special need (such as if your club uses a different handicapping formula), please contact Leithauser Research for a price quote. Most modifications can be done at very low cost. Also, if there is any other type of custom program you would like written, please contact Leithauser Research for a price quote. Also available from Leithauser Research: Team Optimizer. This program allows you to input a list of players and their handicaps. It will then group the players into groups or teams. Players can be grouped so that all players in each group have as nearly the same handicap as possible, to allow for fair play within the group, or into teams where each team has nearly the same total handicap (as close as is possible) for fair competition between teams. You can order this program by sending $15.00 to Leithauser Research at the above address. Appendix A The following is a description of how handicaps and handicap indexes are computed by this program. This information is not necessary to use the program. It is provided for the benefit of those who wish to confirm that the program uses the handicap equations that they want to, or for those who are simply curious. The handicap index and handicap are based on the lowest N net scores of previous games, where N is a number whose value depends on how many previous games are in the computer file. The following is a chart that shows the value of N for various numbers of previous games. Games played N (Number of scores used) 0 to 4 0 (No index or handicap computed) 5 to 6 1 7 or 8 2 9 or 10 3 11 or 12 4 13 or 14 5 15 or 16 6 17 7 18 8 19 9 20 or more 10 from the most recent 20 games The index is computed as follows: For each of the N previous scores used, subtract the course rating of the course that game was played on from the gross score for that game. Multiply that number by 113 and divide that result by the slope of the course the game was played on. Multiply that result by by .96. After doing that for each of the N games, add the results and divide by N to get the average. This is your current index. The handicap for your next game is your current index times the slope rating for the course you play the game on divided by 113. The next score for each game is your gross score minus the product of the handicap for that game times the percentage of the handicap to take (input when you set up the file). If you always play on the same course, so that the slope is always the same, all effects of the slope system will cancel out.