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 # LookUpTableBase

 Last update: 16.07.2026 

<a id="compolyx.LookUpTableBase"></a>

### *class* compolyx.LookUpTableBase(obj, parent=None)

Look-Up table class.

Associates scalar or vector values to points.

Example:

```pycon
>>> table = db.models['class40.1'].create_lookup_table1d(name='LookUpTable1D.1')
>>> table.columns['Location'].values = [0,1,2,3]
>>> db.models['class40.1'].lookup_tables['LookUpTable1D.2'].create_column( name='Radius', type='scalar' )
>>> r = db.models['class40.1'].lookup_tables['LookUpTable1D.2'].columns['Radius']
>>> r.values = [0,0.3,0.6,1]

```

### Attributes

NameDescription[`LookUpTableBase.active`](compolyx.LookUpTableBase.active.md#compolyx.LookUpTableBase.active)LookUpTable active.[`LookUpTableBase.column_factory`](compolyx.LookUpTableBase.column_factory.md#compolyx.LookUpTableBase.column_factory)[`LookUpTableBase.column_types`](compolyx.LookUpTableBase.column_types.md#compolyx.LookUpTableBase.column_types)a list of column types ('scalar', or 'direction').[`LookUpTableBase.columns`](compolyx.LookUpTableBase.columns.md#compolyx.LookUpTableBase.columns)Dictionary with all columns.[`LookUpTableBase.dimensions`](compolyx.LookUpTableBase.dimensions.md#compolyx.LookUpTableBase.dimensions)[`LookUpTableBase.empty`](compolyx.LookUpTableBase.empty.md#compolyx.LookUpTableBase.empty)True if table is empty.[`LookUpTableBase.enabled`](compolyx.LookUpTableBase.enabled.md#compolyx.LookUpTableBase.enabled)Indicates whether the object is enabled.[`LookUpTableBase.id`](compolyx.LookUpTableBase.id.md#compolyx.LookUpTableBase.id)ID of the object.[`LookUpTableBase.is_dict_item`](compolyx.LookUpTableBase.is_dict_item.md#compolyx.LookUpTableBase.is_dict_item)Indicates whether the object is an item in a dictionary.[`LookUpTableBase.is_list_item`](compolyx.LookUpTableBase.is_list_item.md#compolyx.LookUpTableBase.is_list_item)Indicates whether the object is an item of a list.[`LookUpTableBase.link_path`](compolyx.LookUpTableBase.link_path.md#compolyx.LookUpTableBase.link_path)Root path of the current node in the tree for links to this object.[`LookUpTableBase.location_column_name`](compolyx.LookUpTableBase.location_column_name.md#compolyx.LookUpTableBase.location_column_name)[`LookUpTableBase.name`](compolyx.LookUpTableBase.name.md#compolyx.LookUpTableBase.name)Name of the object.[`LookUpTableBase.num_cols`](compolyx.LookUpTableBase.num_cols.md#compolyx.LookUpTableBase.num_cols)Number of rows.[`LookUpTableBase.num_rows`](compolyx.LookUpTableBase.num_rows.md#compolyx.LookUpTableBase.num_rows)Number of columns.[`LookUpTableBase.parent`](compolyx.LookUpTableBase.parent.md#compolyx.LookUpTableBase.parent)Parent object in the tree.[`LookUpTableBase.root_path`](compolyx.LookUpTableBase.root_path.md#compolyx.LookUpTableBase.root_path)Root path of the current node in the tree.[`LookUpTableBase.status`](compolyx.LookUpTableBase.status.md#compolyx.LookUpTableBase.status)Status of the object.[`LookUpTableBase.status_changed`](compolyx.LookUpTableBase.status_changed.md#compolyx.LookUpTableBase.status_changed)Boolean flag which is set to true in C++ when up-to-date status of object changes.[`LookUpTableBase.tabular_data`](compolyx.LookUpTableBase.tabular_data.md#compolyx.LookUpTableBase.tabular_data)a tuple containing a list of column labels and a 2d array with floats for all cells.[`LookUpTableBase.uid`](compolyx.LookUpTableBase.uid.md#compolyx.LookUpTableBase.uid)UID of the object.[`LookUpTableBase.vector_column_suffix`](compolyx.LookUpTableBase.vector_column_suffix.md#compolyx.LookUpTableBase.vector_column_suffix)[`LookUpTableBase.vertex`](compolyx.LookUpTableBase.vertex.md#compolyx.LookUpTableBase.vertex)Raises an error if the object has been removed from the graph.### Methods

NameDescription[`LookUpTableBase.clear`](compolyx.LookUpTableBase.clear.md#compolyx.LookUpTableBase.clear)()Clear table data (rows and columns).[`LookUpTableBase.clear_rows`](compolyx.LookUpTableBase.clear_rows.md#compolyx.LookUpTableBase.clear_rows)()Clear table rows (keep columns).[`LookUpTableBase.create_column`](compolyx.LookUpTableBase.create_column.md#compolyx.LookUpTableBase.create_column)(name\[, type, ...\])Create a new column.[`LookUpTableBase.find_parent`](compolyx.LookUpTableBase.find_parent.md#compolyx.LookUpTableBase.find_parent)(type)Steps up the tree and returns the first parent with given type.[`LookUpTableBase.load_from_csv_file`](compolyx.LookUpTableBase.load_from_csv_file.md#compolyx.LookUpTableBase.load_from_csv_file)(path)Load the table from .csv file in path.[`LookUpTableBase.obj_exists`](compolyx.LookUpTableBase.obj_exists.md#compolyx.LookUpTableBase.obj_exists)()Checks if \_\_obj still references the c++ object (has not been reset to None by self.\_delete) and exists in the graph.[`LookUpTableBase.save_to_csv_file`](compolyx.LookUpTableBase.save_to_csv_file.md#compolyx.LookUpTableBase.save_to_csv_file)(path)Save LookUpTable to CSV file.[`LookUpTableBase.serialize_name_and_id`](compolyx.LookUpTableBase.serialize_name_and_id.md#compolyx.LookUpTableBase.serialize_name_and_id)()Serializes the name and ID.[`LookUpTableBase.update`](compolyx.LookUpTableBase.update.md#compolyx.LookUpTableBase.update)()[`LookUpTableBase.visit`](compolyx.LookUpTableBase.visit.md#compolyx.LookUpTableBase.visit)(visitor)Walk through the tree and let the visitor perform action on every descendant node.