Utility Functions
DiscreteEntropy.logx
— Functionlogx(x)::Float64
Returns natural logarithm of x, or 0.0 if x is zero
DiscreteEntropy.xlogx
— Functionxlogx(x::Float64)
Returns x * log(x)
for x > 0
, or 0.0 if x is zero
DiscreteEntropy.to_bits
— Functionto_bits(x::Float64)
Return $\frac{h}{\log(2)}$ where h is in nats
DiscreteEntropy.to_bans
— Functionto_bans(x::Float64)
Return $\frac{h}{log(10)}$ where h
is in nats
DiscreteEntropy.marginal_counts
— Functionmarginal_counts(contingency_matrix::Matrix, dim; normalise=false)
Return the marginal counts of contingency_matrix
along dimension dim
.
If normalised = true, return as probability distribution.
DiscreteEntropy.bins
— Functionbins(x::CountData)
Return the bins (top row) of x.multiplicities
DiscreteEntropy.multiplicities
— Functionbins(x::CountData)
Return the bin multiplicities (bottom row) of x.multiplicities
DiscreteEntropy.from_csv
— Functionfrom_csv(file::String, field, ::Type{T}; remove_zeros=false, header=nothing) where {T<:EntropyData}
Simple wrapper around *CSV.File() which returns a CountData
object. For more complex requirements, it is best to call CSV directly.
Non-exported functions
DiscreteEntropy.xFx
— Function xFx(f::Function, x)
Returns x * f(x)
for x > 0
, or 0.0 if x is zero
DiscreteEntropy.gammalndiff
— Function gammalndiff(x::Float64, dx::Float64)
Return $\log \Gamma(x + δx) - \log Γ(x)$