DateTimeRounder

Rounds a DateTime value’s day, hour, minute, second, millisecond, microsecond, or nanosecond to a specified interval.

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Typical Uses

Generalizing DateTime values

How does it work?

DateTimeRounder can be used to round the date or time to a specific interval.

For example, you can have the time rounded to 5 minute intervals to keep all events in that timeframe grouped together.

DateTimeRounder can also be used to remove fractional seconds by rounding down to an interval of 1 second.

The input can be a DateTime in either the FME or ISO format. Output is in Standard FME Date/Time Format.

Sub-nanosecond durations are truncated before rounding.

Configuration

Input Ports

Output Ports

Parameters

General

Input Datetime	Datetime value in either FME or ISO format.
Unit to Round	Select the time unit to be used for rounding: Days Hours Minutes Seconds Milliseconds Microseconds Nanoseconds
Interval	Specify the number of time units to be used for rounding. The default is 1. If Unit to Round is Days, the interval is limited to 1. For all other units, the interval must be evenly divisible into the maximum number for that unit: 24 Hours 60 Minutes 60 Seconds 1000 Milliseconds 1000 Microseconds 1000 Nanoseconds For example, an Interval of 5 is valid for both Minutes and Seconds, but not Hours, as 24/5 does not produce an integer.
Round-off Direction	Select a rounding method: Nearest: the value is rounded up or down to nearest value Up: the value will always be rounded up Down: the value will always be rounded down

Editing Transformer Parameters

Transformer parameters can be set by directly entering values, using expressions, or referencing other elements in the workspace such as attribute values or user parameters. Various editors and context menus are available to assist. To see what is available, click beside the applicable parameter.

How to Set Parameter Values

Defining Values

There are several ways to define a value for use in a Transformer. The simplest is to simply type in a value or string, which can include functions of various types such as attribute references, math and string functions, and workspace parameters.

Using the Text Editor

The Text Editor provides a convenient way to construct text strings (including regular expressions) from various data sources, such as attributes, parameters, and constants, where the result is used directly inside a parameter.

Text Editor

Using the Arithmetic Editor

The Arithmetic Editor provides a convenient way to construct math expressions from various data sources, such as attributes, parameters, and feature functions, where the result is used directly inside a parameter.

Arithmetic Editor

Conditional Values

Set values depending on one or more test conditions that either pass or fail.

Parameter Condition Definition Dialog

Content

Expressions and strings can include a number of functions, characters, parameters, and more.

When setting values - whether entered directly in a parameter or constructed using one of the editors - strings and expressions containing String, Math, Date/Time or FME Feature Functions will have those functions evaluated. Therefore, the names of these functions (in the form @<function_name>) should not be used as literal string values.

Content Types

String Functions	These functions manipulate and format strings.
Special Characters	A set of control characters is available in the Text Editor.
Math Functions	Math functions are available in both editors.
Date/Time Functions	Date and time functions are available in the Text Editor.
Math Operators	These operators are available in the Arithmetic Editor.
FME Feature Functions	These return primarily feature-specific values.
FME Parameters	FME and workspace-specific parameters may be used.
Creating and Modifying User Parameters	Create your own editable parameters.

Dialog Options - Tables

Table Tools

Transformers with table-style parameters have additional tools for populating and manipulating values.

Row Reordering

Enabled once you have clicked on a row item. Choices include:

Add a row
Remove a row
Move current row up one
Move current row down one
Move current row to top
Move current row to bottom

Cut, Copy, and Paste

Enabled once you have clicked on a row item. Choices include:

Cut a row - delete and copy to clipboard
Copy a row to the clipboard
Paste a row from the clipboard

Cut, copy, and paste may be used within a transformer, or between transformers.

Filter

Start typing a string, and the matrix will only display rows matching those characters. Searches all columns. This only affects the display of attributes within the transformer - it does not alter which attributes are output.

Import

Import populates the table with a set of new attributes read from a dataset. Specific application varies between transformers.

Reset/Refresh

Generally resets the table to its initial state, and may provide additional options to remove invalid entries. Behavior varies between transformers.

Note: Not all tools are available in all transformers.

For more information, see Transformer Parameter Menu Options.

Reference

Processing Behavior	Feature-Based
Feature Holding	No
Dependencies	None
Aliases
History

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