Hi people,
I would like to work with matrices represented as Arrays of Arrays of
AbstractFloats. Something like this:
F=Array{AbstractFloat}[];#initialize the matrix F as an Array of
Arrays of Float
for (i in 1:10)
Fi = Array(AbstractFloat,0);#initialize the vector Fi as an
Array of Float
for (k in 1:5)
push!(Fi,k^2+i^2)
end#end-fork
push!(F,Fi);
end#end-fori
typeof(F)
Array{Array{AbstractFloat,N},1}
But I am experiencing problems to work with rows/columns of such Arrays. I
would like to calculate the logarithm of the square of elements of those
rows/columns like this:
f = F[1];#a vector of AbstractFloat
typeof(f)
Array{AbstractFloat,1}
typeof(f.^2)
Array{Any,1}
log(f.^2)
ERROR: MethodError: `log` has no method matching log(::Array{Any,1})
I understand this error only happens because I am working with Arrays of
Arrays of AbstractFloats. If I run a similar code using a Matrix instead of
Array I don't have such problems:
A = rand(10,5);#a matrix of floats (similar to an array of arrays)
typeof(A)
Array{Float64,2}
a = A[1,:];#a vector of Float
typeof(a)
Array{Float64,2}
typeof(a.^2)
Array{Float64,2}
log(a.^2)
everything runs smoothly.
My question: Am I doing something wrong in the way I am dealing with the
Array of Arrays of AbstractFloat? Should I convert it to a Matrix? Or
should I convert its elements to Array of Float instead of Array of Any?
Any other suggestion?
Thanks for your attention and for any advice!
Charles
--
Um axé! :)
--
Charles Novaes de Santana, PhD
http://www.imedea.uib-csic.es/~charles
