Function stripes

d3-3.2.8/test/geo/path-test.js:822–828

(a, b)

};

function stripes(a, b) {
  return {type: "Polygon", coordinates: [a, b].map(function(d, i) {
    var stripe = _.range(-180, 180, 1).map(function(x) { return [x, d]; });
    stripe.push(stripe[0]);
    return i ? stripe.reverse() : stripe;
  })};
}

var antarctica = {type: "Polygon", coordinates: [[[-58.61414,-64.15246],[-59.04507,-64.36800],[-59.78934,-64.21122],[-60.61192,-64.30920],[-61.29741,-64.54432],[-62.02210,-64.79909],[-62.51176,-65.09302],[-62.64885,-65.48494],[-62.59012,-65.85721],[-62.12007,-66.19032],[-62.80556,-66.42550],[-63.74569,-66.50384],[-64.29410,-66.83700],[-64.88169,-67.15047],[-65.50842,-67.58161],[-65.66508,-67.95388],[-65.31254,-68.36533],[-64.78371,-68.67890],[-63.96110,-68.91398],[-63.19729,-69.22755],[-62.78595,-69.61941],[-62.57051,-69.99174],[-62.27673,-70.38366],[-61.80666,-70.71676],[-61.51290,-71.08904],[-61.37580,-72.01007],[-61.08197,-72.38235],[-61.00366,-72.77426],[-60.69026,-73.16617],[-60.82736,-73.69524],[-61.37580,-74.10674],[-61.96336,-74.43984],[-63.29520,-74.57699],[-63.74569,-74.92974],[-64.35283,-75.26284],[-65.86098,-75.63512],[-67.19281,-75.79191],[-68.44628,-76.00745],[-69.79772,-76.22299],[-70.60072,-76.63449],[-72.20677,-76.67366],[-73.96953,-76.63449],[-75.55597,-76.71288],[-77.24037,-76.71288],[-76.92697,-77.10480],[-75.39929,-77.28106],[-74.28287,-77.55542],[-73.65611,-77.90811],[-74.77253,-78.22163],[-76.49610,-78.12365],[-77.92585,-78.37841],[-77.98466,-78.78991],[-78.02378,-79.18183],[-76.84863,-79.51493],[-76.63322,-79.88721],[-75.36009,-80.25954],[-73.24485,-80.41633],[-71.44294,-80.69062],[-70.01316,-81.00415],[-68.19164,-81.31767],[-65.70427,-81.47445],[-63.25603,-81.74875],[-61.55202,-82.04269],[-59.69141,-82.37585],[-58.71212,-82.84610],[-58.22248,-83.21843],[-57.00811,-82.86569],[-55.36289,-82.57175],[-53.61977,-82.25823],[-51.54364,-82.00352],[-49.76134,-81.72917],[-47.27393,-81.70958],[-44.82570,-81.84673],[-42.80836,-82.08191],[-42.16202,-81.65082],[-40.77143,-81.35689],[-38.24481,-81.33730],[-36.26666,-81.12171],[-34.38639,-80.90617],[-32.31029,-80.76902],[-30.09709,-80.59265],[-28.54980,-80.33793],[-29.25490,-79.98519],[-29.68580,-79.63250],[-29.68580,-79.26022],[-31.62480,-79.29939],[-33.68132,-79.45613],[-35.63991,-79.45613],[-35.91410,-79.08385],[-35.77700,-78.33924],[-35.32654,-78.12365],[-33.89676,-77.88852],[-32.21236,-77.65345],[-30.99805,-77.35951],[-29.78373,-77.06557],[-28.88277,-76.67366],[-27.51175,-76.49734],[-26.16033,-76.36014],[-25.47482,-76.28180],[-23.92755,-76.24258],[-22.45859,-76.10543],[-21.22469,-75.90947],[-20.01037,-75.67434],[-18.91354,-75.43921],[-17.52298,-75.12569],[-16.64158,-74.79253],[-15.70149,-74.49860],[-15.40771,-74.10674],[-16.46532,-73.87161],[-16.11278,-73.46011],[-15.44685,-73.14654],[-14.40880,-72.95058],[-13.31197,-72.71545],[-12.29350,-72.40193],[-11.51006,-72.01007],[-11.02043,-71.53976],[-10.29577,-71.26541],[-9.10101,-71.32422],[-8.61138,-71.65733],[-7.41662,-71.69650],[-7.37745,-71.32422],[-6.86823,-70.93231],[-5.79098,-71.03028],[-5.53637,-71.40261],[-4.34166,-71.46137],[-3.04898,-71.28505],[-1.79549,-71.16743],[-0.65948,-71.22624],[-0.22863,-71.63774],[0.86819,-71.30463],[1.88668,-71.12826],[3.02263,-70.99111],[4.13905,-70.85391],[5.15754,-70.61878],[6.27391,-70.46205],[7.13571,-70.24651],[7.74286,-69.89376],[8.48711,-70.14853],[9.52513,-70.01133],[10.24984,-70.48163],[10.81782,-70.83433],[11.95382,-70.63837],[12.40428,-70.24651],[13.42277,-69.97216],[14.73499,-70.03091],[15.12675,-70.40324],[15.94934,-70.03091],[17.02658,-69.91335],[18.20171,-69.87418],[19.25937,-69.89376],[20.37573,-70.01133],[21.45298,-70.07014],[21.92303,-70.40324],[22.56940,-70.69718],[23.66618,-70.52081],[24.84135,-70.48163],[25.97730,-70.48163],[27.09372,-70.46205],[28.09258,-70.32485],[29.15024,-70.20728],[30.03158,-69.93293],[30.97173,-69.75661],[31.99017,-69.65864],[32.75405,-69.38429],[33.30244,-68.83564],[33.87041,-68.50258],[34.90849,-68.65927],[35.30020,-69.01201],[36.16201,-69.24714],[37.20003,-69.16874],[37.90510,-69.52144],[38.64940,-69.77620],[39.66789,-69.54107],[40.02043,-69.10994],[40.92135,-68.93362],[41.95943,-68.60051],[42.93870,-68.46331],[44.11387,-68.26740],[44.89729,-68.05186],[45.71992,-67.81673],[46.50334,-67.60119],[47.44344,-67.71875],[48.34441,-67.36606],[48.99073,-67.09171],[49.93088,-67.11130],[50.75347,-66.87617],[50.94932,-66.52348],[51.79154,-66.24913],[52.61413,-66.05317],[53.61303,-65.89639],[54.53355,-65.81804],[55.41494,-65.87680],[56.35504,-65.97478],[57.15809,-66.24913],[57.25596,-66.68021],[58.13736,-67.01332],[58.74450,-67.28767],[59.93931,-67.40523],[60.60522,-67.67958],[61.42780,-67.95388],[62.38748,-68.01269],[63.19048,-67.81673],[64.05234,-67.40523],[64.99244,-67.62072],[65.97171,-67.73834],[66.91186,-67.85590],[67.89113,-67.93430],[68.89003,-67.93430],[69.71262,-68.97279],[69.67345,-69.22755],[69.55594,-69.67822],[68.59625,-69.93293],[67.81273,-70.30526],[67.94988,-70.69718],[69.06630,-70.67754],[68.92915,-71.06945],[68.41998,-71.44178],[67.94988,-71.85328],[68.71376,-72.16680],[69.86930,-72.26478],[71.02489,-72.08841],[71.57328,-71.69650],[71.90628,-71.32422],[72.45462,-71.01070],[73.08141,-70.71676],[73.33602,-70.36402],[73.86487,-69.87418],[74.49155,-69.77620],[75.62755,-69.73703],[76.62646,-69.61941],[77.64490,-69.46268],[78.13453,-69.07076],[78.42837,-68.69844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