It’s often the case in physics that one deals with a vector (i.e. a 1d array or list), where each entry is also a vector. Here’s some code which takes a list of vectors and converts them into an array in Julia.
The code is also available in a public gist at https://gist.github.com/paulnakroshis/ca3ce8de9520c389e3144b69ba30b07b
Here is the code (tested in Julia 1.8.5)
""" # Convert a vector of vectors to an array This function assumes that each vector is the same length; i.e. v1 = [ [1,2], [2,3], [5,6] ] # this is fine v2 = [ [1,2,8], [2,3], [5,6] ] # this is not fine Example of usage: ``` vv = [[1,2,3], [4,5,6], [7,8,9],[12,13,14]] println("num components in each vector = ", length(vv)) println("num of vectors = ", length(vv)) vecvec_to_array(vv) ``` """ function vecvec_to_array(vecvec) dim1 = length(vecvec) dim2 = length(vecvec) my_array = zeros(Int64, dim1, dim2) for i in 1:dim1 for j in 1:dim2 my_array[i,j] = vecvec[i][j] end end return my_array end