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tofikhidayatxyz/integral.js

Created April 2, 2019 02:38
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integral.js
function numerical_int(dx, y_array) {
var maxy = Math.max.apply(null, y_array);
var dy_array = y_array.map(function(num) {
return Math.abs(maxy - num);
});
var profile_integral = 0;
var n = dy_array.length;
for (i = 1; i < n; i++) {
var dy_init = dy_array[i - 1];
var dy_end = dy_array[i];
var darea = dx * (dy_init + dy_end) / 2.;
profile_integral = profile_integral + darea;
}
return profile_integral;
}
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