repl.txt (1382B)
1 2 {{alias}}( x, μ, c ) 3 Evaluates the probability density function (PDF) for a Lévy distribution 4 with location parameter `μ` and scale parameter `c` at a value `x`. 5 6 If provided `NaN` as any argument, the function returns `NaN`. 7 8 If provided `c <= 0`, the function returns `NaN`. 9 10 Parameters 11 ---------- 12 x: number 13 Input value. 14 15 μ: number 16 Location parameter. 17 18 c: number 19 Scale parameter. 20 21 Returns 22 ------- 23 out: number 24 Evaluated PDF. 25 26 Examples 27 -------- 28 > var y = {{alias}}( 2.0, 0.0, 1.0 ) 29 ~0.11 30 > y = {{alias}}( -1.0, 4.0, 2.0 ) 31 0.0 32 > y = {{alias}}( NaN, 0.0, 1.0 ) 33 NaN 34 > y = {{alias}}( 0.0, NaN, 1.0 ) 35 NaN 36 > y = {{alias}}( 0.0, 0.0, NaN ) 37 NaN 38 // Negative scale parameter: 39 > y = {{alias}}( 2.0, 0.0, -1.0 ) 40 NaN 41 42 43 {{alias}}.factory( μ, c ) 44 Returns a function for evaluating the probability density function (PDF) of 45 a Lévy distribution with location parameter `μ` and scale parameter `c`. 46 47 Parameters 48 ---------- 49 μ: number 50 Location parameter. 51 52 c: number 53 Scale parameter. 54 55 Returns 56 ------- 57 pdf: Function 58 Probability density function (PDF). 59 60 Examples 61 -------- 62 > var myPDF = {{alias}}.factory( 10.0, 2.0 ); 63 > var y = myPDF( 11.0 ) 64 ~0.208 65 66 See Also 67 -------- 68