juliatips.md

RSDeltaSigma: Julia tips

1. Useful functions
2. linspace() & logspace()

Useful functions

Not all functions you might want to use are directly available in julia. In many cases, you need to make functions available by importing them from different libraries:

import Random
import Statistics: mean
import LinearAlgebra
import LinearAlgebra: norm, diagm, eigen
import SpecialFunctions: erfinv
import FFTW: fft, fftshift
import DSP: conv
import Polynomials: roots, Polynomial
import Printf: @sprintf

RSDeltaSigma does not automatically export these symbols/functions (make the functions available to the user). This choice was deliberatly made to avoid symbol collisions in cases where the user needs to manually import said symbols to get other portions of their code working.

linspace() & logspace()

Functions linspace() & logspace() don't exist in Julia 1.0+. Instead, you should use range():

1. range(start, stop=stop, length=n): Constructs a StepRangeLen object.
   • collect(range(0, stop=100, length=101)): Generates a Vector{Float64} (not Vector{Int}).
2. 10 .^ range(start, stop=stop, length=n): Generates a Vector{Float64} object.
   • 10 .^ range(-10, stop=10, length=101): Log-spaced values ∈ [1.0e-10, 1.0e10].