Element/ node interaction¶

Once you structures will get more and more complex, it will become harder to keep count of element id and node ids. The SystemElements class therefore has several methods that help you:

Find a node id based on a x- and y-coordinate
Find the nearest node id based on a x- and y-coordinate
Get all the coordinates of all nodes.

Find node id based on coordinates¶

SystemElements.find_node_id(vertex)[source]¶

Retrieve the ID of a certain location.

Parameters: vertex (Union[Vertex, Sequence[float]]) – Vertex_xz, [x, y], (x, y)
Return type: Optional[int]
Returns: id of the node at the location of the vertex

Find nearest node id based on coordinates¶

SystemElements.nearest_node(dimension, val)[source]¶

Retrieve the nearest node ID.

Parameters

dimension (str) – “both”, ‘x’, ‘y’ or ‘z’
val (Union[float, Sequence[float]]) – Value of the dimension.

Return type

Optional[int]

Returns

ID of the node.

Query node coordinates¶

SystemElements.nodes_range(dimension)[source]¶

Retrieve a list with coordinates x or z (y).

Parameters: dimension (str) – “both”, ‘x’, ‘y’ or ‘z’
Return type: List[Union[float, Tuple[float, float], None]]