pandas

Documentation

Overview

Package pandas contains functionality that mirrors python's popular pandas library.

Index

• func DropNil(ctx context.Context, sdf interface{}, lock bool) error
• func FillNil(ctx context.Context, replaceVal interface{}, sdf interface{}, lock bool) error
• type DescribeOptions
• type DescribeOutput
  • func Describe(ctx context.Context, sdf interface{}, opts ...DescribeOptions) (DescribeOutput, error)
  • func (do DescribeOutput) String() string
• type SpecialFillNilValue

Functions

func DropNil

func DropNil(ctx context.Context, sdf interface{}, lock bool) error

DropNil drops all rows that contain nil values.

func FillNil

func FillNil(ctx context.Context, replaceVal interface{}, sdf interface{}, lock bool) error

FillNil replaces all nil values with replaceVal. When applied to a DataFrame, replaceVal must be of type map[interface{}]interface{}, where the key is the Series name or Series index.

Note: Not all Series recognise the type of replaceVal. The function will panic on such a scenario. A string is recognised by all built-in Series types.

Types

type DescribeOptions

type DescribeOptions struct {

	// Percentiles sets which Quantiles to return.
	Percentiles []float64

	// Whitelist sets which Series to provide statistics for.
	Whitelist []interface{}

	// Blacklist sets which Series to NOT provide statistics for.
	Blacklist []interface{}
}

DescribeOptions configures what Describe should return or display.

type DescribeOutput

type DescribeOutput struct {
	Count       []int
	NilCount    []int
	Median      []float64
	Mean        []float64
	StdDev      []float64
	Min         []float64
	Max         []float64
	Percentiles [][]float64
	// contains filtered or unexported fields
}

DescribeOutput contains statistical data for a DataFrame or Series. Despite the fields being exported, it is not intended to be inspected. Use the String function to view the information in a table format.

func Describe

func Describe(ctx context.Context, sdf interface{}, opts ...DescribeOptions) (DescribeOutput, error)

Describe outputs various statistical information a Series or Dataframe.

See: https://pandas.pydata.org/pandas-docs/stable/reference/api/pandas.DataFrame.describe.html#pandas.DataFrame.describe

func (DescribeOutput) String

func (do DescribeOutput) String() string

String implements the Stringer interface in the fmt package.

type SpecialFillNilValue

type SpecialFillNilValue int

SpecialFillNilValue is a special value type for the FillNil function.

const (
	// Mean will fill Nil values with the mean.
	Mean SpecialFillNilValue = 0

	// Sum will fill Nil values with the sum.
	Sum SpecialFillNilValue = 1
)