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I earlier asked a question about arrays in scheme (turns out they're called vectors but are basically otherwise the same as you'd expect).
Is there an easy way to do multidimensional arrays vectors in PLT Scheme though? For my purposes I'd like to have a procedure called make-multid-vector or something.
By the way if this doesn't already exist, I don't need a full code example of how to implement it. If I have to roll this myself I'd appreciate some general direction though. The way I'd probably do it is to just iterate through each element of the currently highest dimension of the vector to add another dimension, but I can see that being a bit ugly using scheme's recursive setup.
Also, this seems like something I should have been able to find myself so please know that I did actually google it and nothing came up.
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A multi-dimensional array is an array with more than one level or dimension. For example, a 2D array, or two-dimensional array, is an array of arrays, meaning it is a matrix of rows and columns (think of a table). A 3D array adds another dimension, turning it into an array of arrays of arrays.
For a multidimensional array, memory for the elements of the array is required to be allocated contiguously. For a vector of vector, the memory for the elements is most likely going to be disjoint. Also, it is possible to defined a vector of vectors in which the number of columns is not same for each row.
A multidimensional array in MATLAB® is an array with more than two dimensions. In a matrix, the two dimensions are represented by rows and columns. Each element is defined by two subscripts, the row index and the column index.
A multidimensional array associates each element in the array with multiple indexes. The most commonly used multidimensional array is the two-dimensional array, also known as a table or matrix. A two-dimensional array associates each of its elements with two indexes.
The two common approaches are the same as in many languages, either use a vector of vectors, or (more efficiently) use a single vector of X*Y and compute the location of each reference. But there is a library that does that -- look in the docs for srfi/25, which you can get with (require srfi/25).
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