arange(5)
arange(5, {dtype:Int32Array})
arange(5, {dtype:Array})
arange(5, {start: 1, step:0.5})
zeros(3)
ones(3)
linspace(0, 1, 6)
linspace(1, 0, 6)
logspace(-2, 3, 6)
geomspace(1e-2, 1e3, 6)
cumsum(arange(5, {dtype:Int32Array}))
cumsum(arange(5, {dtype:Int32Array}), {dtype:Float32Array})
x = linspace(0, 10, 1001)
y = x.map(x => Math.sin(x))
diff(y)
cumsum(y)
argsort(y)
interp([Math.PI / 2, Math.PI / 4], x, y)
// scalar first arg gives a scalar result
interp(1, x, y)
// xp can be decreasing
interp(1, [2,1,0],[5,6,7])
// x can be clipped to the limits of xp
interp([-1,3],[0,1,2],[5,6,7],{clipped:true})
data = Float64Array.from({length: 1000}, a => Math.random());
histogram(data, 10, {range:[0,1]})
histogram(data, 10, {range:[0,1], weights:data.map(x => x**2)})
histogram(data, linspace(0, 1, 11)).hist
{
const data = [0,2,-1,1];
return {max:argmax(data), min:argmin(data)};
}
meshgrid([[-1,1],[-2,0,2]])
meshgrid([[-1,1],[-2,0,2]]).flat(2);
meshgrid([[-1,1],[-2,0,2]], {flat:true, dtype:Float32Array})
meshgrid([new Int32Array([-1,1]), new Int32Array([-2,0,2])])
Purpose-built for displays of data
Observable is your go-to platform for exploring data and creating expressive data visualizations. Use reactive JavaScript notebooks for prototyping and a collaborative canvas for visual data exploration and dashboard creation.
