DateTimeRounder
Rounds a DateTime value’s day, hour, minute, or second to a specified interval.
Typical Uses
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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.
Configuration
Input Ports
This transformer accepts any feature.
Output Ports
Features with rounded DateTime values added as specified in parameters.
Parameters
Input Datetime |
Datetime value in either FME or ISO format. |
Unit to Round
|
Select the time unit to be used for rounding:
|
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:
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:
|
Result |
Name the attribute to contain the rounded Datetime value. |
Editing Transformer Parameters
Using a set of menu options, transformer parameters can be assigned by referencing other elements in the workspace. More advanced functions, such as an advanced editor and an arithmetic editor, are also available in some transformers. To access a menu of these options, click beside the applicable parameter. For more information, see Transformer Parameter Menu Options.
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. There are a number of tools and shortcuts that can assist in constructing values, generally available from the drop-down context menu adjacent to the value field.
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.
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.
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.
These functions manipulate and format strings. | |
Special Characters |
A set of control characters is available in the Text Editor. |
Math functions are available in both editors. | |
Date/Time Functions | Date and time functions are available in the Text Editor. |
These operators are available in the Arithmetic Editor. | |
These return primarily feature-specific values. | |
FME and workspace-specific parameters may be used. | |
Creating and Modifying User Parameters | Create your own editable parameters. |
Dialog Options - Tables
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:
|
Cut, Copy, and Paste
|
Enabled once you have clicked on a row item. Choices include:
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.
Reference
Processing Behavior |
|
Feature Holding |
No |
Dependencies | None |
Aliases |
|
History |
FME Community
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