Python construct_matrix_and_entries Examples

Programming Language: Python

Namespace/Package Name: sympyutils

Method/Function: construct_matrix_and_entries

Examples at hotexamples.com: 3

Python construct_matrix_and_entries - 3 examples found. These are the top rated real world Python examples of sympyutils.construct_matrix_and_entries extracted from open source projects. You can rate examples to help us improve the quality of examples.

Example #1

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File: quadrotor3d.py Project: sup4r/Horus

f_gravity_world = matrix([0, -m * g, 0]).T
f_external_world = f_gravity_world

construct_sympy_expressions = False

if construct_sympy_expressions:

    print "Constructing sympy symbols..."

    d_expr = sympy.Symbol("d")
    alpha_expr = sympy.Symbol("alpha")
    beta_expr = sympy.Symbol("beta")
    gamma_expr = sympy.Symbol("gamma")
    m_expr = sympy.Symbol("m")
    I_expr, I_expr_entries = sympyutils.construct_matrix_and_entries(
        "I", (3, 3))
    f_external_expr, f_external_expr_entries = sympyutils.construct_matrix_and_entries(
        "f_e", (3, 1))

    t_expr = sympy.Symbol("t")

    p_z_expr = sympy.physics.mechanics.dynamicsymbols("p_z")
    p_y_expr = sympy.physics.mechanics.dynamicsymbols("p_y")
    p_x_expr = sympy.physics.mechanics.dynamicsymbols("p_x")
    theta_expr = sympy.physics.mechanics.dynamicsymbols("theta")
    psi_expr = sympy.physics.mechanics.dynamicsymbols("psi")
    phi_expr = sympy.physics.mechanics.dynamicsymbols("phi")

    q_expr = sympy.Matrix(
        [p_z_expr, p_y_expr, p_x_expr, theta_expr, psi_expr, phi_expr])
    q_dot_expr = q_expr.diff(t_expr)

Example #2

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File: quadrotor3d.py Project: STMPNGRND/Horus

f_external_world = f_gravity_world

construct_sympy_expressions = False



if construct_sympy_expressions:

    print "Constructing sympy symbols..."

    d_expr                                   = sympy.Symbol("d")
    alpha_expr                               = sympy.Symbol("alpha")
    beta_expr                                = sympy.Symbol("beta")
    gamma_expr                               = sympy.Symbol("gamma")
    m_expr                                   = sympy.Symbol("m")
    I_expr, I_expr_entries                   = sympyutils.construct_matrix_and_entries("I",(3,3))
    f_external_expr, f_external_expr_entries = sympyutils.construct_matrix_and_entries("f_e",(3,1))

    t_expr = sympy.Symbol("t")

    p_z_expr   = sympy.physics.mechanics.dynamicsymbols("p_z")
    p_y_expr   = sympy.physics.mechanics.dynamicsymbols("p_y")
    p_x_expr   = sympy.physics.mechanics.dynamicsymbols("p_x")
    theta_expr = sympy.physics.mechanics.dynamicsymbols("theta")
    psi_expr   = sympy.physics.mechanics.dynamicsymbols("psi")
    phi_expr   = sympy.physics.mechanics.dynamicsymbols("phi")

    q_expr     = sympy.Matrix([p_z_expr,p_y_expr,p_x_expr,theta_expr,psi_expr,phi_expr])
    q_dot_expr = q_expr.diff(t_expr)

    u_expr, u_expr_entries = sympyutils.construct_matrix_and_entries("u",(4,1))

Example #3

Show file

I = m * d**2.0  # moment of intertia

f_gravity_world = matrix([-m * g, 0]).T
f_external_world = f_gravity_world

construct_sympy_expressions = False

if construct_sympy_expressions:

    print "Constructing sympy symbols..."

    d_expr = sympy.Symbol("d")
    m_expr = sympy.Symbol("m")
    I_expr = sympy.Symbol("I")

    f_external_expr, f_external_expr_entries = sympyutils.construct_matrix_and_entries(
        "f_e", (2, 1))

    t_expr = sympy.Symbol("t")

    p_y_expr = sympy.physics.mechanics.dynamicsymbols("p_y")
    p_x_expr = sympy.physics.mechanics.dynamicsymbols("p_x")
    theta_expr = sympy.physics.mechanics.dynamicsymbols("theta")

    q_expr = sympy.Matrix([p_y_expr, p_x_expr, theta_expr])
    q_dot_expr = q_expr.diff(t_expr)

    u_expr, u_expr_entries = sympyutils.construct_matrix_and_entries(
        "u", (2, 1))

    print "Constructing sympy expressions..."