Variable MathsConst

Type declaration

• difference: ((x0: number, x1: number) => null | number)

  • • (x0, x1): null | number

    • Calculate the difference of two values.

      Parameters

      • x0: number

        First value
      • x1: number

        Second value

      Returns null | number

• differences: ((x0: number[], x1: number[]) => (null | number)[])

  • • (x0, x1): (null | number)[]

    • Calculate the difference for two arrays.

      Parameters

      • x0: number[]

        First pair of values
      • x1: number[]

        Second pair of values

      Returns (null | number)[]

• erf: ((x: number) => number)

  • • (x): number

    • Error function approximation of Abramowitz and Stegun, formula 7.1.26 in the Handbook of Mathematical Functions with Formulas, Graphs, and Mathematical Tables. Although the approximation is only valid for x ≥ 0, because erf(x) is an odd function, erf(x) = −erf(−x) and negative values are supported.

      Parameters

      • x: number

      Returns number

• interpolate: ((xySequence: XySequence, value: number, mode?: InterpolateMode) => number)

  • • (xySequence, value, mode?): number

    • Interpolate.

      Parameters

      • xySequence: XySequence

        The Xy sequence
      • value: number

        The value to interpolate at.
      • mode: InterpolateMode = InterpolateMode.LOG_LOG

        The interpolation mode

        Default interpolation model

      Returns number

      Default

      InterpolateMode.LOG_LOG
      Copy

• minMax: ((data: number[]) => number[])

  • • (data): number[]

    • Returns the min and max value of a large data array.

      Parameters

      • data: number[]

        The data

      Returns number[]

• normalCcdf: ((μ: number, σ: number, x: number) => number)

  • • (μ, σ, x): number

    • Normal complementary cumulative distribution function.

      Parameters

      • μ: number

        mean
      • σ: number

        standard deviation
      • x: number

        variate

      Returns number

• percentDifference: ((x0: number, x1: number) => number)

  • • (x0, x1): number

    • Calculate the percent difference of two values.

      Parameters

      • x0: number

        First value
      • x1: number

        Second value

      Returns number

• percentDifferences: ((x0: number[], x1: number[]) => number[])

  • • (x0, x1): number[]

    • Calculate the percent difference for two arrays.

      Parameters

      • x0: number[]

        First pair of values
      • x1: number[]

        Second pair of values

      Returns number[]

• responseSpectrum: ((hazards: Map<Imt, XySequence>, returnPeriod: number) => XySequence)

  • • (hazards, returnPeriod): XySequence

    • Calculate the response sepectrum for each IMT.

      Parameters

      • hazards: Map<Imt, XySequence>

        The hazard curves by imt
      • returnPeriod: number

        The return period (in years) to calculate at

      Returns XySequence

• round: ((value: number, scale: number) => number)

  • • (value, scale): number

    • Round a number to specific format

      Parameters

      • value: number

        Value to round
      • scale: number

        Format scale

      Returns number