Python sdm_from_dmi示例

示例#1

文件： algorithms.py 项目： fakufaku/pylocus

def reconstruct_smds(dm, absolute_angles, real_points, W=None):
    """ Reconstruct point set using signed Multidimensional Scaling.
    """
    from pylocus.point_set import dmi_from_V, sdm_from_dmi, get_V
    from pylocus.mds import signedMDS

    N = real_points.shape[0]

    V = get_V(absolute_angles, dm)

    dmx = dmi_from_V(V, 0)
    dmy = dmi_from_V(V, 1)

    sdmx = sdm_from_dmi(dmx, N)
    sdmy = sdm_from_dmi(dmy, N)

    points_x = signedMDS(sdmx, W)
    points_y = signedMDS(sdmy, W)

    Xhat = np.c_[points_x, points_y]
    Y, R, t, c = procrustes(real_points, Xhat, scale=False)
    return Y

示例#2

文件： algorithms.py 项目： oleksandr-pavlyk/pylocus

def reconstruct_cdm(dm, absolute_angles, real_points, W=None):
    """ Reconstruct point set from angle and distance measurements, using coordinate difference matrices.
    """
    from pylocus.point_set import dmi_from_V, sdm_from_dmi, get_V
    from pylocus.mds import signedMDS

    N = real_points.shape[0]

    V = get_V(absolute_angles, dm)

    dmx = dmi_from_V(V, 0)
    dmy = dmi_from_V(V, 1)

    sdmx = sdm_from_dmi(dmx, N)
    sdmy = sdm_from_dmi(dmy, N)

    points_x = signedMDS(sdmx, W)
    points_y = signedMDS(sdmy, W)

    Xhat = np.c_[points_x, points_y]
    Y, R, t, c = procrustes(real_points, Xhat, scale=False)
    return Y