Fix doc-tests for variance.
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@ -76,6 +76,9 @@ impl<N: Real, R: Dim, C: Dim, S: Storage<N, R, C>> Matrix<N, R, C, S> {
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}
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/// The sum of all the rows of this matrix.
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///
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/// Use `.row_variance_tr` if you need the result in a column vector instead.
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///
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/// # Example
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///
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/// ```
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@ -138,11 +141,12 @@ impl<N: Real, R: Dim, C: Dim, S: Storage<N, R, C>> Matrix<N, R, C, S> {
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/// # Example
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///
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/// ```
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/// # #[macro_use] extern crate approx;
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/// # use nalgebra::Matrix2x3;
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///
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/// let m = Matrix2x3::new(1.0, 2.0, 3.0,
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/// 4.0, 5.0, 6.0);
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/// assert_eq!(m.variance(), 3.5);
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/// assert_relative_eq!(m.variance(), 35.0 / 12.0, epsilon = 1.0e-8);
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/// ```
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#[inline]
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pub fn variance(&self) -> N {
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@ -156,6 +160,8 @@ impl<N: Real, R: Dim, C: Dim, S: Storage<N, R, C>> Matrix<N, R, C, S> {
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}
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/// The variance of all the rows of this matrix.
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///
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/// Use `.row_variance_tr` if you need the result in a column vector instead.
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/// # Example
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///
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/// ```
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@ -163,7 +169,7 @@ impl<N: Real, R: Dim, C: Dim, S: Storage<N, R, C>> Matrix<N, R, C, S> {
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///
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/// let m = Matrix2x3::new(1.0, 2.0, 3.0,
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/// 4.0, 5.0, 6.0);
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/// assert_eq!(m.row_variance(), RowVector3::new(4.5, 4.5, 4.5));
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/// assert_eq!(m.row_variance(), RowVector3::new(2.25, 2.25, 2.25));
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/// ```
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#[inline]
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pub fn row_variance(&self) -> RowVectorN<N, C>
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@ -180,7 +186,7 @@ impl<N: Real, R: Dim, C: Dim, S: Storage<N, R, C>> Matrix<N, R, C, S> {
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///
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/// let m = Matrix2x3::new(1.0, 2.0, 3.0,
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/// 4.0, 5.0, 6.0);
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/// assert_eq!(m.row_variance_tr(), Vector3::new(4.5, 4.5, 4.5));
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/// assert_eq!(m.row_variance_tr(), Vector3::new(2.25, 2.25, 2.25));
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/// ```
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#[inline]
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pub fn row_variance_tr(&self) -> VectorN<N, C>
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@ -246,6 +252,8 @@ impl<N: Real, R: Dim, C: Dim, S: Storage<N, R, C>> Matrix<N, R, C, S> {
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/// The mean of all the rows of this matrix.
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///
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/// Use `.row_mean_tr` if you need the result in a column vector instead.
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///
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/// # Example
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///
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/// ```
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