LinearTransformation - Code Search

android/guava/src/com/google/common/math/LinearTransformation.java

   * always return that original instance.
   */
  public abstract LinearTransformation inverse();

  private static final class RegularLinearTransformation extends LinearTransformation {

    final double slope;
    final double yIntercept;

    @LazyInit @Nullable LinearTransformation inverse;

    RegularLinearTransformation(double slope, double yIntercept) {
      this.slope = slope;

Created: Fri Apr 03 12:43:13 GMT 2026

- Last Modified: Mon Aug 11 19:31:30 GMT 2025

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github.com/google/guava

android/guava-tests/test/com/google/common/math/LinearTransformationTest.java

    double x1 = 1.2;
    double y = 5.6;
    LinearTransformation transformation = LinearTransformation.mapping(x1, y).withSlope(0.0);
    assertHorizontalLinearTransformation(transformation, y);
  }

  public void testMappingWithSlope_vertical() {
    double x = 1.2;
    double y1 = 3.4;
    LinearTransformation transformation =
        LinearTransformation.mapping(x, y1).withSlope(Double.POSITIVE_INFINITY);

Created: Fri Apr 03 12:43:13 GMT 2026

- Last Modified: Tue Mar 17 16:11:48 GMT 2026

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github.com/google/guava

guava-tests/test/com/google/common/math/LinearTransformationTest.java

    double x1 = 1.2;
    double y = 5.6;
    LinearTransformation transformation = LinearTransformation.mapping(x1, y).withSlope(0.0);
    assertHorizontalLinearTransformation(transformation, y);
  }

  public void testMappingWithSlope_vertical() {
    double x = 1.2;
    double y1 = 3.4;
    LinearTransformation transformation =
        LinearTransformation.mapping(x, y1).withSlope(Double.POSITIVE_INFINITY);

Created: Fri Apr 03 12:43:13 GMT 2026

- Last Modified: Tue Mar 17 16:11:48 GMT 2026

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github.com/google/guava

guava-tests/test/com/google/common/math/StatsTesting.java

   * assertions about all the public instance methods of {@link LinearTransformation}, including an
   * assertion that {@link LinearTransformation#transform} and {@link LinearTransformation#slope} on
   * its inverse throws as expected.
   */
  static void assertHorizontalLinearTransformation(LinearTransformation transformation, double y) {
    assertThat(transformation.isHorizontal()).isTrue();

Created: Fri Apr 03 12:43:13 GMT 2026

- Last Modified: Tue Mar 03 05:21:26 GMT 2026

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github.com/google/guava

android/guava-tests/test/com/google/common/math/StatsTesting.java

   * assertions about all the public instance methods of {@link LinearTransformation}, including an
   * assertion that {@link LinearTransformation#transform} and {@link LinearTransformation#slope} on
   * its inverse throws as expected.
   */
  static void assertHorizontalLinearTransformation(LinearTransformation transformation, double y) {
    assertThat(transformation.isHorizontal()).isTrue();

Created: Fri Apr 03 12:43:13 GMT 2026

- Last Modified: Tue Mar 03 05:21:26 GMT 2026

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github.com/google/guava

android/guava/src/com/google/common/math/PairedStatsAccumulator.java

    }
    double xSumOfSquaresOfDeltas = xStats.sumOfSquaresOfDeltas();
    if (xSumOfSquaresOfDeltas > 0.0) {
      if (yStats.sumOfSquaresOfDeltas() > 0.0) {
        return LinearTransformation.mapping(xStats.mean(), yStats.mean())
            .withSlope(sumOfProductsOfDeltas / xSumOfSquaresOfDeltas);
      } else {
        return LinearTransformation.horizontal(yStats.mean());
      }
    } else {

Created: Fri Apr 03 12:43:13 GMT 2026

- Last Modified: Mon Sep 08 18:35:13 GMT 2025

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github.com/google/guava

android/guava/src/com/google/common/math/PairedStats.java

    }
    double xSumOfSquaresOfDeltas = xStats.sumOfSquaresOfDeltas();
    if (xSumOfSquaresOfDeltas > 0.0) {
      if (yStats.sumOfSquaresOfDeltas() > 0.0) {
        return LinearTransformation.mapping(xStats.mean(), yStats.mean())
            .withSlope(sumOfProductsOfDeltas / xSumOfSquaresOfDeltas);
      } else {
        return LinearTransformation.horizontal(yStats.mean());
      }
    } else {

Created: Fri Apr 03 12:43:13 GMT 2026

- Last Modified: Tue Jul 08 18:32:10 GMT 2025

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github.com/google/guava

guava-tests/test/com/google/common/math/PairedStatsAccumulatorTest.java

      PairedStatsAccumulator accumulatorByAddAllPartitionedPairedStats =
          createPartitionedFilledPairedStatsAccumulator(values.asIterable(), OTHER_MANY_VALUES, 2);
      LinearTransformation fit = accumulator.leastSquaresFit();
      LinearTransformation fitByAddAllPartitionedPairedStats =
          accumulatorByAddAllPartitionedPairedStats.leastSquaresFit();
      if (values.hasAnyNonFinite()) {
        assertLinearTransformationNaN(fit);

Created: Fri Apr 03 12:43:13 GMT 2026

- Last Modified: Tue Mar 03 05:21:26 GMT 2026

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github.com/google/guava

android/guava-tests/test/com/google/common/math/PairedStatsTest.java

    // x-values:
    for (ManyValues values : ALL_MANY_VALUES) {
      PairedStats stats = createPairedStatsOf(values.asIterable(), OTHER_MANY_VALUES);
      LinearTransformation fit = stats.leastSquaresFit();
      if (values.hasAnyNonFinite()) {
        assertLinearTransformationNaN(fit);
      } else {
        assertDiagonalLinearTransformation(
            fit,

Created: Fri Apr 03 12:43:13 GMT 2026

- Last Modified: Tue Mar 17 16:11:48 GMT 2026

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github.com/google/guava

guava-tests/test/com/google/common/math/PairedStatsTest.java

    // x-values:
    for (ManyValues values : ALL_MANY_VALUES) {
      PairedStats stats = createPairedStatsOf(values.asIterable(), OTHER_MANY_VALUES);
      LinearTransformation fit = stats.leastSquaresFit();
      if (values.hasAnyNonFinite()) {
        assertLinearTransformationNaN(fit);
      } else {
        assertDiagonalLinearTransformation(
            fit,

Created: Fri Apr 03 12:43:13 GMT 2026

- Last Modified: Tue Mar 17 16:11:48 GMT 2026

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