There be many a land lubber that knows naught of the pirate ways and gives direction by degree!
They know not how to box the compass!



Task description

 Create a function that takes a heading in degrees and returns the correct 32-point compass heading.
 Use the function to print and display a table of Index, Compass point, and Degree; rather like the corresponding columns from, the first table of the wikipedia article, but use only the following 33 headings as input:
[0.0, 16.87, 16.88, 33.75, 50.62, 50.63, 67.5, 84.37, 84.38, 101.25, 118.12, 118.13, 135.0, 151.87, 151.88, 168.75, 185.62, 185.63, 202.5, 219.37, 219.38, 236.25, 253.12, 253.13, 270.0, 286.87, 286.88, 303.75, 320.62, 320.63, 337.5, 354.37, 354.38]. (They should give the same order of points but are spread throughout the ranges of acceptance).


Notes;
 The headings and indices can be calculated from this pseudocode:
for i in 0..32 inclusive:
    heading = i * 11.25
    case i %3:
      if 1: heading += 5.62; break
      if 2: heading -= 5.62; break
    end
    index = ( i mod 32) + 1
 The column of indices can be thought of as an enumeration of the thirty two cardinal points (see talk page)..


function createRow(i, point, heading) {
    var tr = document.createElement('tr'),
        td;
 
    td = document.createElement('td');
    td.appendChild(document.createTextNode(i));
    tr.appendChild(td);
 
    td = document.createElement('td');
    point = point.substr(0, 1).toUpperCase() + point.substr(1);
    td.appendChild(document.createTextNode(point));
    tr.appendChild(td);
 
    td = document.createElement('td');
    td.appendChild(document.createTextNode(heading));
    tr.appendChild(td);
 
    return tr;
}
 
function getPoint(i) {
    var j = i % 8,
        i = Math.floor(i / 8) % 4,
        cardinal = ['north', 'east', 'south', 'west'],
        pointDesc = ['1', '1 by 2', '1-C', 'C by 1', 'C', 'C by 2', '2-C', '2 by 1'],
        str1, str2, strC;
 
    str1 = cardinal[i];
    str2 = cardinal[(i + 1) % 4];
    strC = (str1 === 'north' || str1 === 'south') ? str1 + str2 : str2 + str1;
    return pointDesc[j].replace('1', str1).replace('2', str2).replace('C', strC);
}
 
var i,
    heading,
    table = document.createElement('table'),
    tbody = document.createElement('tbody'),
    tr;
for (i = 0; i <= 32; i += 1) {
    heading = i * 11.25 + [0, 5.62, -5.62][i % 3];
    tr = createRow(i % 32 + 1, getPoint(i), heading + '°');
    tbody.appendChild(tr);
}
table.appendChild(tbody);
document.body.appendChild(table);
 