Introduction

The Series and DataFrame objects rely on index to determine the order of their data.

The main type of index in gambas is the IndexData type, defined as per below:

type IndexData struct {
    index []Index
    names []string
}

• index holds the index values, which are of type Index.
• names are the names of each index column. For single index, names only has one element. For multiindex, names will have as many elements as necessary.

You can access the private fields with these accessors:

func (id IndexData) Index() []Index {
    return id.index
}

func (id IndexData) Names() []string {
    return id.names
}

This is the definition of the Index type.

type Index struct {
    id    int
    value []interface{}
}

• id is the ID of an index item.
• value is the value of an index item. For single index, value only has one element. For multiindex, value will have as many elements as necessary.

You can access the private fields with these accessors:

func (i Index) Id() int {
    return i.id
}

func (i Index) Value() []interface{} {
    return i.value
}