mir-algorithm 2.0.1

Multidimensional arrays (ndslice), ranges, iterators, and algorithms for Dlang


To use this package, put the following dependency into your project's dependencies section:

dub.json
dub.sdl

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Mir Algorithm

Dlang core library for math, finance and a home for Dlang multidimensional array package - ndslice.

Blogs
Example (3 sec)
/+dub.sdl:
dependency "mir-algorithm" version="~>0.9.1"
+/

void main()
{
    import mir.ndslice;

    auto matrix = slice!double(3, 4);
    matrix[] = 0;
    matrix.diagonal[] = 1;

    auto row = matrix[2];
    row[3] = 6;
    assert(matrix[2, 3] == 6); // D & C index order
    
    import std.stdio;
    matrix.writeln; // [[1, 0, 0, 0], [0, 1, 0, 0], [0, 0, 1, 6]]
}

Open on run.dlang.io

Example (30 sec)
/+dub.sdl:
dependency "mir-algorithm" version="~>1.1.1"
+/
void main()
{
    import mir.ndslice;
    import std.stdio : writefln;

    enum fmt = "%(%(%.2f %)\n%)\n";

    // Magic sqaure. 
    // `a` is lazy, each element is computed on-demand.
    auto a = magic(5).as!float;
    writefln(fmt, a);

    // 5x5 grid on sqaure [1, 2] x [0, 1] with values x * x + y. 
    // `b` is lazy, each element is computed on-demand.
    auto b = linspace!float([5, 5], [1f, 2f], [0f, 1f]).map!"a * a + b";
    writefln(fmt, b);

    // allocate a 5 x 5 contiguous matrix
    auto c = slice!float(5, 5);

    c[] = transposed(a + b / 2); // no memory allocations here
    // 1. b / 2 - lazy element-wise operation with scalars
    // 2. a + (...) - lazy element-wise operation with other slices
    // Both slices must be `contiguous` or one-dimensional.
    // 3. transposed(...) - trasposes matrix view. The result is `universal` (numpy-like) matrix.
    // 5. c[] = (...) -- performs element-wise assignment.
    writefln(fmt, c);
}

Open on run.dlang.io

Our sponsors

<img src="https://raw.githubusercontent.com/libmir/mir-algorithm/master/images/symmetry.png" height="80" />         <img src="https://raw.githubusercontent.com/libmir/mir-algorithm/master/images/kaleidic.jpeg" height="80" />

Authors:
  • Ilya Yaroshenko
  • Sebastian Wilzbach
  • John Michael Hall
  • Andrei Alexandrescu
  • Walter Bright
  • Phobos developers (see information per file)
Dependencies:
none
Versions:
3.1.11 2018-Nov-17
3.1.10 2018-Nov-17
3.1.9 2018-Nov-16
3.1.8 2018-Nov-13
3.1.7 2018-Nov-12
Show all 103 versions
Download Stats:
  • 171 downloads today

  • 1180 downloads this week

  • 4283 downloads this month

  • 37530 downloads total

Score:
4.9
Short URL:
mir-algorithm.dub.pm