tis series have (sometimes implicit) `basis`

and
`observed`

attributes, used when aggregating or disaggregating to
different frequencies.

1 2 3 4 |

`x` |
a |

`value` |
a character string, see the details |

These (optional) attributes of a `tis`

series are used when
converting a series from one frequency to another.

A series `basis`

is "business" or "daily",
indicating whether the data values in a series are associated with a
5-day business week or a 7-day calendar week.

The `observed`

attribute of series is one of the following:

`annualized`

Specifies that each time series value is the annualized sum of observations made throughout the associated time interval. For time scale conversion and totaling purposes, this attribute is the same as averaged.

`averaged`

Specifies that each time series value is the average of the observations made throughout the associated time interval.

`beginning`

Specifies that each time series value represents a single observation made at the beginning of the associated time interval.

`end`

Specifies that each time series value represents a single observation made at the end of the associated time interval.

`formula`

Specifies that the time series represents a transformation of other series. For time scale conversion and totaling purposes, this attribute is the same as averaged.

`high`

Specifies that each time series value is the maximum value for the time interval.

`low`

Specifies that each time series value is the minimum value for the time interval.

`summed`

Specifies that each time series value is the sum of observations made throughout the associated time interval.

`basis`

and `observed`

return a character string. The
assignment forms invisibly return `x`

.

The FAME documentation, available from Sungard.

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