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buildPreflopEquityMatrix

Build a 169×169 preflop equity matrix (row-major Float64Array).

buildPreflopEquityMatrix(options?: PreflopMatrixOptions): Float64Array

Import​

const poker = require('poker-calculations');

When to use​

Use for heatmaps, correlation studies, or batch preflop analysis.

How to use​

const poker = require('poker-calculations');

const matrix = poker.buildPreflopEquityMatrix({ iterations: 2000, seed: 1, threads: 4 });
console.log(matrix.length); // 169 * 169

Each cell uses Monte Carlo with a fixed disjoint-suit matchup for that row/column pair. For i ≠ j, matrix[j * 169 + i] = 1 - matrix[i * 169 + j] (symmetry). See Numerical semantics.