sdynpy.CoordinateArray

• Defined as: sdynpy.core.sdynpy_coordinate.CoordinateArray

• Module: sdynpy.core.sdynpy_coordinate

• Source: GitHub

• Parent: sdynpy.SdynpyArray

• Parent: numpy.ndarray

Signature¶

class sdynpy.CoordinateArray(shape, buffer=None, offset=0, strides=None, order=None)

Coordinate information specifying Degrees of Freedom (e.g. 101X+).

Use the coordinate_array helper function to create the array.

Attributes¶

data_dtype¶

Methods¶

abs¶

• Source: GitHub

def sdynpy.CoordinateArray.abs(self)

Returns a coordinate array with direction signs flipped positive

direction_string_array¶

• Source: GitHub

def sdynpy.CoordinateArray.direction_string_array(self)

Returns a string array representation of the direction

Returns¶

• np.ndarray

• ndarray of direction strings representing the CoordinateArray

find_indices¶

• Source: GitHub

def sdynpy.CoordinateArray.find_indices(self, coordinate)

Finds the indices and signs of the specified coordinates

Parameters¶

• coordinate : CoordinateArray A CoordinateArray containing the coordinates to find.

Returns¶

• indices : tuple of ndarray An tuple of arrays of indices into this CoordinateArray for each entry in coordinate, which can be used directly to index this CoordinateArray.

• signs : ndarray An array of sign flips between this CoordinateArray at the indices in indices for each entry in coordinate

Raises¶

• ValueError

• If more than one coordinate matches, or no coordinate matches.

from_matlab_cellstr¶

• Source: GitHub

def sdynpy.CoordinateArray.from_matlab_cellstr(cls, cellstr_data)

Creates a CoordinateArray from a matlab cellstring object loaded from scipy.io.loadmat

Parameters¶

• cellstr_data : np.ndarray Dictionary entry corresponding to a cell string variable in a mat file loaded from scipy.io.loadmat

Returns¶

• CoordinateArray

• CoordinateArray built from the provided cell string array

from_nodelist¶

• Source: GitHub

def sdynpy.CoordinateArray.from_nodelist(cls, nodes, directions=[1, 2, 3], flatten=True)

Returns a coordinate array with a set of nodes with a set of directions

Parameters¶

• nodes : iterable A list of nodes to create degrees of freedom at

• directions : iterable, optional A list of directions to create for each node. The default is [1,2,3], which provides the three positive translations (X+, Y+, Z+).

• flatten : bool, optional Specifies that the array should be flattened prior to output. The default is True. If False, the output will have a dimension one larger than the input node list due to the added direction dimension.

Returns¶

• coordinate_array : CoordinateArray Array of coordinates with each specified direction defined at each node. If flatten is false, this array will have shape nodes.shape + directions.shape. Otherwise, this array will have shape (nodes.size*directions.size,)

local_direction¶

• Source: GitHub

def sdynpy.CoordinateArray.local_direction(self)

Returns a local direction array

Returns¶

• local_direction_array : np.ndarray Returns a (...,3) array where ... is the dimension of the CoordinateArray. The (...,0), (...,1), and (...,2) indices represent the x,y,z direction of the local coordinate direction. For example, a CoordinateArray with direction X- would return [-1,0,0].

offset_node_ids¶

• Source: GitHub

def sdynpy.CoordinateArray.offset_node_ids(self, offset_value)

Returns a copy of the CoordinateArray with the node IDs offset

Parameters¶

• offset_value : int The value to offset the node IDs by.

Returns¶

• CoordinateArray

sign¶

• Source: GitHub

def sdynpy.CoordinateArray.sign(self)

Returns the sign on the directions of the CoordinateArray

string_array¶

• Source: GitHub

def sdynpy.CoordinateArray.string_array(self)

Returns a string array representation of the coordinate array

Returns¶

• np.ndarray

• ndarray of strings representing the CoordinateArray