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Slot: Reason Period Start Is Missing (percentile_reference_period_start_missing_reason)

Reason percentile_reference_period_start is null.

Tier: optional

Why this slot matters

Distinguishes "not a percentile-based metric, so no baseline exists" from "a baseline was used but not captured" — without the reason, a consumer cannot tell a benign blank from a blocking one.

In plain terms

A blank field is ambiguous: it could mean the thing does not exist, or that nobody wrote it down. This companion field says which one it is.

URI: envar:slot/percentile_reference_period_start_missing_reason

Applicable Classes

Name Description Modifies Slot
DerivedHeatMetric Methodology slots specific to derived heat metrics (WBGT, Heat Index, UTCI, a... no

Properties

Type and Range

Property Value
Range MissingReasonEnum
Domain Of DerivedHeatMetric

Cardinality and Requirements

Property Value

Examples

Value
not_applicable

Identifier and Mapping Information

Annotations

property value
tier optional
justification Distinguishes "not a percentile-based metric, so no baseline exists" from "a baseline was used but not captured" — without the reason, a consumer cannot tell a benign blank from a blocking one.
explanation A blank field is ambiguous: it could mean the thing does not exist, or that nobody wrote it down. This companion field says which one it is.

Schema Source

Mappings

Mapping Type Mapped Value
self envar:percentile_reference_period_start_missing_reason
native envar:percentile_reference_period_start_missing_reason

LinkML Source

name: percentile_reference_period_start_missing_reason
annotations:
  tier:
    tag: tier
    value: optional
  justification:
    tag: justification
    value: Distinguishes "not a percentile-based metric, so no baseline exists" from
      "a baseline was used but not captured" — without the reason, a consumer cannot
      tell a benign blank from a blocking one.
  explanation:
    tag: explanation
    value: 'A blank field is ambiguous: it could mean the thing does not exist, or
      that nobody wrote it down. This companion field says which one it is.'
description: Reason `percentile_reference_period_start` is null.
title: Reason Period Start Is Missing
examples:
- value: not_applicable
from_schema: https://w3id.org/linkml/microschemas/envar
rank: 1000
domain_of:
- DerivedHeatMetric
range: MissingReasonEnum