73 lines
1.7 KiB
Java
73 lines
1.7 KiB
Java
<html><head>
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<meta charset="utf-8">
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<title>contour test</title>
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<meta name="author" content="Ben Frederickson">
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<style>
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.axis path,
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.axis line {
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fill: none;
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stroke: #666;
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}
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.axis {
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font-family: "helvetica-nueue";
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font-size: 10px;
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}
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</style>
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</head>
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<body>
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<div id="contour_graph" style="width:600px"> </div>
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<script src="https://cdnjs.cloudflare.com/ajax/libs/d3/4.2.3/d3.min.js"></script>
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<script src="./build/contour_plot.js"></script>
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<script>
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function himmelblau(x, y) {
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return (x * x + y - 11) * ( x * x + y - 11) + (x + y * y - 7) * (x + y * y - 7);
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}
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function banana(x, y) {
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return (1 - x) * (1 - x) + 100 * (y - x * x) * ( y - x * x)
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}
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function beale(x, y) {
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return Math.pow(1.5 - x + x*y, 2) + Math.pow(2.25 - x + x*y*y, 2) +
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Math.pow(2.625 - x + x*y*y*y, 2);
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}
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function booth(x, y) {
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return Math.pow(x + 2 * y - 7, 2) + Math.pow(2 * x + y - 5, 2);
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}
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function matyas(x, y) {
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return .26 * (x * x + y * y) - .48 * x * y;
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}
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function goldsteinPrice(x, y) {
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return (1. + Math.pow(x + y + 1, 2) *
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(19 - 14*x + 3*x*x - 14 * y + 6 * x * x + 3 * y * y))
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* (30 + Math.pow(2*x-3*y, 2)*(18 - 32*x + 12 * x * x + 48*y - 36 * x * y + 27 * y* y));
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}
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var plot = contour_plot.ContourPlot()
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.f(himmelblau)
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.drawAxis(false)
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.xDomain([-6, 6])
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.yDomain([6, -6])
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.contourCount(12)
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.minima([{x : 3.584428, y : -1.848126},
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{x : -2.805118, y : 3.131312},
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{x : -3.779310, y : -3.283186},
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{x : 3, y : 2}]);
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var elements = plot(d3.select("#contour_graph"));
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</script>
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</div></div></div>
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</body></html>
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