Reader nodes¶

Mesh readers require a path: Path parameter exported as an input port, so it can be configured directly or connected from a file-path source. The CSV reader instead requires a path: Text input. Readers reject missing or non-file paths; mesh readers also require a filename extension.

Node (ID)	Output	Behavior
Read Mesh (Muscat) (`load-muscat`)	`mesh: Mesh document`	Uses Muscat's extension-aware universal reader.
Read Mesh (MeshIO) (`load-meshio`)	`mesh: Mesh document`	Reads with meshio and converts through Muscat's bridge.
Read Mesh (MeshLane) (`load-meshlane`)	`mesh: Mesh document`	Reads with the optional MeshLane adapter and bridge.
Read Table (Pandas) (`load-csv`)	`table: Table`	Reads CSV columns with pandas and returns a mapping of column names to arrays.
Read Table (Pandas) (`read-table`)	`data: Table document`	Reads an Excel `.xlsx` workbook with pandas and returns a mapping of column names to lists.

Mesh readers return the canonical editable MeshDocument. MeshLane requires the optional MeshLane dependency and matching Muscat bridge. Reader failures are reported as actionable MeshLoadError messages.

The Excel reader has path: Path (default input_pandas.xlsx) and sheet_name: Text (default Sheet1) parameter ports. Supply the workbook path and sheet name directly or connect upstream values. A missing workbook raises TableReadError; pandas uses openpyxl to read the selected sheet.