function generateData()

in src/playground.ts [1067:1088]

• 21 lines of code
• 5 McCabe index (conditional complexity)

function generateData(firstTime = false) {
  if (!firstTime) {
    // Change the seed.
    state.seed = Math.random().toFixed(5);
    state.serialize();
    userHasInteracted();
  }
  Math.seedrandom(state.seed);
  let numSamples = (state.problem === Problem.REGRESSION) ?
      NUM_SAMPLES_REGRESS : NUM_SAMPLES_CLASSIFY;
  let generator = state.problem === Problem.CLASSIFICATION ?
      state.dataset : state.regDataset;
  let data = generator(numSamples, state.noise / 100);
  // Shuffle the data in-place.
  shuffle(data);
  // Split into train and test data.
  let splitIndex = Math.floor(data.length * state.percTrainData / 100);
  trainData = data.slice(0, splitIndex);
  testData = data.slice(splitIndex);
  heatMap.updatePoints(trainData);
  heatMap.updateTestPoints(state.showTestData ? testData : []);
}