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📐 Matrix Algebra & Heatmaps

Generating outer products and inspecting 2D numeric matrices.

N ← 12
M ← (⍳N) ∘.× (⍳N)
M

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Interactive APL Tutorial Chapters

Chapter 1: Foundations of APL & Array Thinking
Chapter 2: Vectors, Matrices & Reshape (⍴, ⍳)
Chapter 3: Array Arithmetic & Boolean Masks
Chapter 4: Reductions (/) & Prefix Scans (\)
Chapter 5: Outer Products (∘.) & Table Math
Chapter 6: Dfns ({⍺ ⍵}), Guards & Recursion
Chapter 7: Each (¨) & The Rank Operator (⍤)
Chapter 8: Sorting (⍋ ⍒), Grouping (⌸) & Data Manipulation
Chapter 9: Matrix Algebra, Transpose (⍉) & Linear Solvers (⌹)
Chapter 10: Conway's Game of Life & Fractals in APL

Computational APL Notebooks

Conway's Game of Life in APL
Mandelbrot Fractal Set in APL
Matrix Algebra & Outer Product Heatmaps in APL
Function Plotting & SVG Charts in APL