markrogoyski / math-php / 1494

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PCA (#332)

* Create PCA.php

* Create PCATest.php

* Create SampleData.php

* Update PCA.php

* Update PCATest.php

* Update PCA.php

* Update PCATest.php

* Update PCATest.php

* Update PCA.php

* Update PCA.php

* Update PCA.php

* Update PCA.php

* Update PCATest.php

* Update PCA.php

* Update PCA.php

* Update PCA.php

* Update PCATest.php

* Update PCATest.php

* Update PCA.php

* Update PCATest.php

* Update PCA.php

* Update PCATest.php

* Update PCATest.php

* Update PCA.php

* Update PCATest.php

* Update PCA.php

* Update PCATest.php

* Update PCATest.php

* Update PCA.php

* Update PCA.php

* Update PCATest.php

* Update PCATest.php

* Update PCA.php

* Update PCA.php

* Update PCA.php

* Update PCA.php

* Update PCA.php

* Update PCA.php

* Update PCA.php

* Update PCA.php

* Update PCA.php

* Update PCA.php

* Update PCA.php

* Update PCA.php

* Update PCATest.php

* Update PCA.php

* Update Eigenvector.php (#71)

slight refactor

* Update PCATest.php

* Update PCATest.php

* Update PCATest.php

* Update PCATest.php

* Update PCATest.php

* Update PCA.php

* Update PCATest.php

* Update PCA.php

* Update PCATest.php

* Update PCA.php

* Update PCA.php

* missing exception, missing doc-block returns

* Add exception tests

* Update PCATest.php

* Update PCA.php

* Pca refactor (#72)

* A couple small changes. Changed getRow() to getColumn()
* Comments

* Pca namespace change (#76)

* Update and rename src/LinearAlgebra/PCA.php to src/Statistics/Multivariate/PCA.php

* Update and rename tests/LinearAlgebra/PCATest.php to tests/Statistics/Multivariate/PCATest.php

* Update PCA.php

* Pca more coverage (#77)

* Remove inertia (#78)

Inertia was defined incorrectly, but only used in one place, so I removed it.
It should be the squared sum of all elements in the data matrix, which would be num_vars*(n... (continued)

104 of 104 new or added lines in 1 file covered. (100.0%)

5848 of 5884 relevant lines covered (99.39%)

514.39 hits per line