chart_me.charting_assembly_strategy.univariate

Default implementation for single variable charting

This module contains all the logic to go from Metadata to actual charts See supporting documentation that discusses the rules engine.

Typical usage example:

charts = assemble_univariate_charts(df, [col1], infered_data_types)

Classes

`ChartMeDataTypeMetaType`	Defines Normalized Metadata about Datatypes
`InferedDataTypes`	Core Object Returned for Assembler - column level specifications

Functions

`assemble_univariate_charts`(→ List[Union[altair.Chart, ...)	Delegated Function to Manage Univariate Use Cases
`build_hbar_agg`(→ altair.Chart)	An implementation of horizontal bar chart
`build_vbar_agg`(→ altair.Chart)	An implementation of vertical bar chart
`build_histogram`(→ altair.Chart)	An implementation of histogram chart

Module Contents

class chart_me.charting_assembly_strategy.univariate.ChartMeDataTypeMetaType(*args, **kwds)[source]

Bases: enum.Enum

Defines Normalized Metadata about Datatypes

Defines Key, Boolean, Quantitative, Categorical High Cardinality, Categorical Low Cardinality, Temporal, Not Supported

KEY = ('K',)

BOOLEAN = ('B',)

QUANTITATIVE = ('Q',)

CATEGORICAL_HIGH_CARDINALITY = ('C-HC',)

CATEGORICAL_LOW_CARDINALITY = ('C-LC',)

TEMPORAL = ('T',)

NOT_SUPPORTED_TYPE = 'NA'

class chart_me.charting_assembly_strategy.univariate.InferedDataTypes[source]

Core Object Returned for Assembler - column level specifications

preaggregated: bool

chart_me_data_types: Dict[str, ChartMeDataType]

chart_me_data_types_meta: Dict[str, ChartMeDataTypeMetaType]

chart_me.charting_assembly_strategy.univariate.assemble_univariate_charts(df: pandas.DataFrame, cols: List[str], infered_data_types: chart_me.datatype_infer_strategy.InferedDataTypes, **kwargs) → List[altair.Chart | altair.HConcatChart][source]

Delegated Function to Manage Univariate Use Cases

Parameters:

df – dataframe
cols – a single column name in a list
infered_data_types – An instance of InferedDataTypes object

Returns:

List of altair charts or compounds charts

Raises:

ValueError if called with more then one column –

chart_me.charting_assembly_strategy.univariate.build_hbar_agg(df: pandas.DataFrame, col_name: str, agg_name: str) → altair.Chart[source]: An implementation of horizontal bar chart

chart_me.charting_assembly_strategy.univariate.build_vbar_agg(df: pandas.DataFrame, col_name: str, agg_name: str) → altair.Chart[source]: An implementation of vertical bar chart

chart_me.charting_assembly_strategy.univariate.build_histogram(df: pandas.DataFrame, col_name: str) → altair.Chart[source]: An implementation of histogram chart