Description
Return inside, excluded-boundary, before, or after for time.
Event boundaries and partial observation intervals depend on a chosen endpoint convention. Equality at a supplied threshold may change a classification even when the underlying measurements are unchanged.
Return inside, excluded-boundary, before, or after for time.
When to use this tool
Use Hydrograph Event Boundary Token when you need to apply an explicit interval or event-separation rule.
How to use the tool and how it works
- Enter time, eventStart, eventEnd, includeStart, includeEnd. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read membership. Use the output convention below.
Require eventEnd no earlier than eventStart and apply independent start and end inclusion flags. Return inside, excluded-boundary, before, or after for time.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| time | Time | Required. Finite number. |
| eventStart | Event Start | Required. Finite number. |
| eventEnd | Event End | Required. Finite number. |
| includeStart | Include Start | Required. Boolean. |
| includeEnd | Include End | Required. Boolean. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| membership | Membership | Required. Text; maximum UTF-16 length 8192. |
{
"input": {
"time": 10,
"eventStart": 10,
"eventEnd": 20,
"includeStart": false,
"includeEnd": true
},
"output": {
"membership": "excluded-boundary"
}
}Limitations and assumptions
- All coordinates share a time unit and origin; this classifies one supplied event interval without detecting events or interpreting precipitation or flood records.
- Inputs must satisfy both the field types and the cross-field conditions above. Invalid input causes an error; a successful false flag or documented placeholder is a different result.
- Numeric calculations use binary floating point unless exact decimal-integer arithmetic is explicitly stated. No hidden measurement tolerance or decimal rounding is added; nonfinite or out-of-contract results are rejected. Numeric signed-zero results are exported as zero.
Alternative or Complementary methods
Document the observation resolution and event-definition policy before comparing records from different sources.
References
Similar or alternative tools
- Storm Gap Boundary Policy
Split events at gap greater than the threshold, including equality only when equalitySplits.
- Commute Window Exposure Fraction
Return their nonnegative overlap and overlap divided by commute duration.