StyleSubset

class numpy::StyleSubset

numpy C++ class.

Example

#include <numpy/np_ndarray.h>
using namespace numpy;

// Use StyleSubset
StyleSubset obj;
// ... operations ...

Constructors

Signature	Location	Example
StyleSubset() = default	df_styler.h:47
StyleSubset(const std::vector<std::string>& cols, const std::vector<size_t>& r)	df_styler.h:50

Other Methods

Signature	Return Type	Location	Example
StyleSubset(const std::vector<std::string>& cols) : columns(cols)	StyleSubset(const std::vector<std::string>& cols) :	df_styler.h:48	View
StyleSubset(const std::vector<size_t>& r) : rows(r)	StyleSubset(const std::vector<size_t>& r) :	df_styler.h:49	View

Code Examples

The following examples are extracted from the test suite.

columns (np_test_4_all.cpp:22531)

    mask.setElementAt({1, 3}, false);

    mask.setElementAt({2, 0}, false);
    mask.setElementAt({2, 1}, true);
    mask.setElementAt({2, 2}, true);
    mask.setElementAt({2, 3}, false);

    MaskedArray<int> marr(data, mask);
    auto result = numpy::ma::compress_nd(marr, 1);

    // Should have 2 columns (columns 0 and 3)
    if (!(result.data().getShape().size() == 2)) {
        std::string description = std::string("test_compress_nd_2d_axis1():") + __FILE__ + ":" + std::to_string(__LINE__) + ": !(result.data().getShape().size() == 2)";
        std::cout << std::string("[FAIL] ") + description << std::endl;
        throw std::runtime_error(description);
    }
    if (!(result.data().getShape()[0] == 3)) {
        std::string description = std::string("test_compress_nd_2d_axis1():") + __FILE__ + ":" + std::to_string(__LINE__) + ": !(result.data().getShape()[0] == 3)";
        std::cout << std::string("[FAIL] ") + description << std::endl;
        throw std::runtime_error(description);
    }

rows (np_test_2_all.cpp:4910)

  namespace test_matrix {

    /**
     * Test basic matrix construction and properties
     */
    void testMatrixBasics() {
      std::cout << "========= testMatrixBasics =======================";

      // Test construction from dimensions
      numpy::Matrix<double> m1(3, 3);
      assert_test(m1.rows() == 3, "Matrix rows");
      assert_test(m1.cols() == 3, "Matrix cols");
      assert_test(m1.isSquare(), "Matrix is square");

      // Test construction from 2D vector
      std::vector<std::vector<int>> data = { {1, 2, 3}, {4, 5, 6} };
      numpy::Matrix<int> m2(data);
      assert_test(m2.rows() == 2, "Matrix from vector rows");
      assert_test(m2.cols() == 3, "Matrix from vector cols");
      assert_test(m2(0, 0) == 1, "Matrix element access");
      assert_test(m2(1, 2) == 6, "Matrix element access");