Series API

One-dimensional labeled array.

Constructor

new Series(data: DataValue[], options?: SeriesOptions)

Properties

• dtype - Get the data type of the Series
• name - Get the name of the Series
• length - Get the number of elements
• shape - Get the shape as a tuple [number_of_elements]

Data Access

• get(label: Index) - Get value by label
• iloc(position: number) - Get value by position
• loc(labels: Index[]) - Get values by labels
• ilocRange(positions: number[]) - Get values by positions

Basic Operations

• head(n?: number) - Return first n elements
• tail(n?: number) - Return last n elements
• unique() - Return unique values
• valueCounts() - Count value frequencies
• nunique(dropna?: boolean) - Count unique values
• isUnique() - Check if all values are unique

Statistical Methods

• mean() - Calculate mean
• std() - Calculate standard deviation
• min() - Find minimum value
• max() - Find maximum value
• sum() - Calculate sum
• count() - Count non-null values

Data Manipulation

• filter(mask: boolean[]) - Filter using boolean mask
• drop(labels: Index[]) - Drop values by labels
• rename(name: string) - Rename the series
• isin(values: T[]) - Check if values are in list
• sortValues(ascending?: boolean) - Sort values
• sortIndex(ascending?: boolean) - Sort by index
• resetIndex() - Reset the index

Data Cleaning

• isnull() - Check for null values
• notnull() - Check for non-null values
• dropna() - Remove null values
• fillna(value: T) - Fill null values

Grouping

• groupBy(by?: GroupByKey, options?: GroupByOptions) - Group for aggregation