Advanced Options

The advanced options tab is used to select options that are useful for tuning the program and for when you are setting tasks for more than one class.

Distance Calculation Methods

The calculator works out distances using a 2D or 3D earth model. The Equirectangular method uses a simple Pythagaros flat earth approximation. Haversine and Cosine methods use a spherical earth using the volumetric mean radius of 6371K and will achieve accuracy of approximately 0.3%. The Vincenty method uses the WGS84 ovoid 'flatter' earth model using an equatorial radius of 6378.137K and a polar radius of 6356.752314245K. The Vincenty method is accurate to a few centimetres against a smooth ovoid but is significantly more complex than the spherical and flat earth methods. Only use Vincenty if your computer is sufficiently powerful! You can choose any one of these four methods depending upon your personal or country defined preference. Use Google for more detailed explanation.

All calculations are performed in radians and then translated into the units chosen for display purposes. For consistency all records written in files to be used by SeeYou are recorded in kilometers irrespective of the distance units chosen. 

Calculation Scheme Options

See here for more information on calculation schemes

Multiple Classes and handicap lists

If you want to restrict the list of handicap barrel pairs shown on the task sheet to just those that are entered in a competition or class, select the 'Multiple Classes' option and either 

a) enter a string that defines the handicaps to be calculated and printed. These can be in the form of range such as 80-90, a list separated by commas such as 100,101,104,106, or a combination of the two. This feature also allows you to set tasks for handicaps that are not whole numbers such as 99.5, or

b) enter a path to a See You cuc format file, See You pilots text file (exported from V8 or later), or LoggerPilotGliderHandicap.csv file that you have created earlier. The calculator will extract handicaps from this file when it calculates the task. Note that the calculator will save the handicap list with the task definition, not the file path. Also please note that your cuc or txt file must contain logger data to import successfully.

When you choose 'Multiple Classes' the main task options will present a drop down list of classes rather than min and max handicaps.

Calculation using US or FAI style handicaps

US and FAI handicaps are arranged around 1.0 for the standard glider. FAI do the same as the UK with higher numbers for faster gliders but in the US they do the opposite with higher handicaps e.g. 1.1 for slower gliders and lower handicaps e.g. 0.93 for faster gliders. It is possible to calculate and display tasks using these handicaps using the classes feature. select the 'Multiple Classes' option and either

a) enter a string that defines the handicaps to be calculated and printed. These should be a list separated by commas such as 0.9,1.01,1.04,1.1. This feature also allows you to set tasks for using US and FAI style handicaps, or

b) enter a path to a See You V8 or later pilots file. This is a text file that can be exported from See You Competition once the pilot data is set up. 

c) enter a path to a csv file of US handicaps.Create this in Excel or Wordpad and save as a csv file. The first cell (A1) must contain the text "US Handicap" or "FAI Handicap" and Column 1 should contain handicaps in the US/FAI format e.g. 0.975 (additional columns will be ignored).
The resultant file will look something like this in Wordpad:

US Handicap

The program will import these handicaps and use them for processing. They will then be displayed in the appropriate format on the resulting report.

Inverting the handicap order

Where the handicap list gives the slower glider a higher number as in the USA style it is now necessary to tick the 'Invert Handicaps' check box to calculated correctly.