dataframe

package

v0.1.0-prealpha Latest Latest Go to latest Published: Dec 16, 2024 License: MIT Imports: 7 Imported by: 0

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github.com/chriso345/golab

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README ¶

Dataframe

To Implement:

Dataframes
- Shape
- Columns
- Head
- Tail
- Index
- SetIndex
- ResetIndex
- ... (more to come)

Documentation ¶

Index ¶

func ParseSQL(sql string) (string, error)
type CSVSettings
type DataFrame
- func FromCSV(path string, settings ...CSVSettings) *DataFrame
- func New(se ...series.Series) DataFrame

Constants ¶

This section is empty.

Variables ¶

This section is empty.

Functions ¶

func ParseSQL ¶

func ParseSQL(sql string) (string, error)

Types ¶

type CSVSettings ¶

type CSVSettings struct {
	Header      bool
	Separator   rune
	IndexColumn string
	SkipRows    []int
}

CSVSettings defines a struct that contains settings for reading a CSV file, allows for optional settings

type DataFrame ¶

type DataFrame struct {
	// contains filtered or unexported fields
}

DataFrame is a collection of series.Series with a shared index. It is similar to a table in a relational database, and is implemented similar to a dataframe in R or Python (pandas).

func FromCSV ¶

func FromCSV(path string, settings ...CSVSettings) *DataFrame

FromCSV reads a CSV file and returns a DataFrame

func New ¶

func New(se ...series.Series) DataFrame

New creates a new DataFrame from a collection of series.Series. It has a shared index which defaults to a range of integers.

func (*DataFrame) Append ¶

func (df *DataFrame) Append(s series.Series)

Append appends a series.Series to right of the DataFrame.

func (DataFrame) At ¶

func (df DataFrame) At(i, j int) any

At returns the value at the specified row and column of the DataFrame.

func (DataFrame) Column ¶

func (df DataFrame) Column(name string) *series.Series

Column returns a series.Series of the DataFrame by name.

func (DataFrame) Columns ¶

func (df DataFrame) Columns() []series.Series

Columns returns a collection of the series.Series of the DataFrame.

func (DataFrame) Copy ¶

func (df DataFrame) Copy() DataFrame

Copy returns a deep copy of the DataFrame.

func (*DataFrame) Drop ¶

func (df *DataFrame) Drop(name string) series.Series

Drop removes the specified column from the DataFrame and returns it as a series.Series.

func (DataFrame) Head ¶

func (df DataFrame) Head(n ...int) DataFrame

Head returns a slice of the last n elements of the DataFrame. If n is not specified, it defaults to 5.

func (DataFrame) Index ¶

func (df DataFrame) Index() series.Series

Index returns the index of the DataFrame.

func (DataFrame) Names ¶

func (df DataFrame) Names() []string

Names returns a collection of the names of the series.Series of the DataFrame.

func (DataFrame) Order ¶

func (df DataFrame) Order(positions ...int) DataFrame

Order orders the DataFrame inplace according to the specified positions.

func (DataFrame) ResetIndex ¶

func (df DataFrame) ResetIndex() DataFrame

ResetIndex resets the index of the DataFrame to a range of integers.

func (DataFrame) SelectNumericNames ¶

func (df DataFrame) SelectNumericNames() []string

SelectNumericNames returns a collection of the names of numeric columns of the DataFrame.

func (DataFrame) SelectObjectNames ¶

func (df DataFrame) SelectObjectNames() []string

SelectObjectNames returns a collection of the names of object columns of the DataFrame.

func (DataFrame) SetIndex ¶

func (df DataFrame) SetIndex(s series.Series) DataFrame

SetIndex sets the index of the DataFrame to a specified series.Series.

func (DataFrame) Shape ¶

func (df DataFrame) Shape() (int, int)

Shape returns the dimensions of the DataFrame in the form (nrows, ncols).

func (DataFrame) Slice ¶

func (df DataFrame) Slice(a, b int) DataFrame

Slice returns a new DataFrame with rows from a to b

func (DataFrame) Sort ¶

func (df DataFrame) Sort(columns ...string)

Sort sorts the DataFrame inplace according to the specified columns.

func (DataFrame) String ¶

func (df DataFrame) String() string

String is the Stringer implementation for DataFrame.

func (DataFrame) Swap ¶

func (df DataFrame) Swap(row1, row2 int)

Swap swaps the rows at index row1 and row2 of the DataFrame inplace.

func (DataFrame) Tail ¶

func (df DataFrame) Tail(n ...int) DataFrame

Tail returns a slice of the last n elements of the DataFrame. If n is not specified, it defaults to 5.

Source Files ¶

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Directories ¶

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