corner.jl: ERROR: MethodError: no method matching dotc(::RGBA{Float64}, ::RGBA{Float64})

[dbrowne]

where is dotc defined?: It is not the LinearAlgebra BLAS.dotc
Thought using ColorVectorSpace.dotc might be a solution but to no avail.

function gradcovs(img::AbstractArray, border::AbstractString = "replicate"; weights::Function = meancovs, args...)
(grad_x, grad_y) = imgradients(img, KernelFactors.sobel, border)

cov_xx = dotc(grad_x, grad_x)
cov_xy = dotc.(grad_x, grad_y)
cov_yy = dotc.(grad_y, grad_y)

weights(cov_xx, cov_xy, cov_yy, args...)

end
Any Suggestions?

[timholy]

Yes, it's ColorVectorSpace. If you can give a reproducible example of the problem you're having, it might help.