Hachure Density Slope Band Classifier

Qualified caller-reference registry: actual slope evidence, scale, historical/cartographic convention and independently established hachure-density bands. Requires independently applicable source/context/date evidence; not an authoritative table, omitted predictive model, diagnosis, permission, safety or compliance determination.

Description

Retrieve a supplied hachure density slope band reference record with its declared source, context and date.

Hachures represent relief through a historical drawing convention, whose density can depend on slope and map scale. This tool retrieves a supplied, context-specific density classification instead of imposing a universal hachure rule.

This is a caller-supplied reference registry. It retrieves a record from the keys and texts you provide, and carries the supplied source, context and date into the result. It does not contain or fetch a built-in authoritative table for hachure density slope band.

When to use this tool

Use this tool to retrieve and carry an already reviewed, context-specific record through a repeatable workflow. Prepare the applicable source material first; a query label alone is not evidence.

Select a record without losing its source, context and date.
Keep query spelling and paired reference records consistent.

How to use the tool and how it works

Identify an independently applicable source, its context and its as-of date before preparing the records.
Enter matching reference-key and reference-text lists. Keep each key aligned with its text and use unique keys.
Enter queryReferenceKey exactly as it occurs in the key list, then run the lookup.
Read result.qualifiedReferenceText together with result.source, result.context and result.asOfDate. Verify applicability before relying on the retrieved text.

The tool requires a nonblank source and context and checks that the as-of date is a valid Gregorian date. It requires the key and text lists to have matching lengths, the keys to be unique and nonblank, and the texts to be nonblank. It finds queryReferenceKey by exact, case-sensitive equality and returns the text at the same index. An unknown key is an input error rather than a guessed result. Source, context and date are echoed from the input; the tool does not authenticate them.^[1]

Input field	Meaning and units	Accepted input
callerVerifiedSource	Identify the independently checked source and edition; a nonblank label is required.	Text
callerVerifiedContext	State the applicable population, method, model or jurisdiction; a nonblank description is required.	Text
callerVerifiedAsOfDate	Gregorian date YYYY-MM-DD identifying the supplied reference context.	Text
callerReferenceKeys	Unique, nonblank, case-sensitive keys in the same order as the reference texts.	List of text values
callerReferenceTexts	Nonblank reference text for each key; provide at most 128 paired entries.	List of text values
queryReferenceKey	Exact key to retrieve; an absent key is an input error.	Text

Output field	Interpretation
result	Object containing the following named result fields.
result.qualifiedReferenceText	Text selected by exact query-key equality; supplied evidence is not independently authenticated.
result.source	The callerVerifiedSource string echoed unchanged.
result.context	The callerVerifiedContext string echoed unchanged.
result.asOfDate	The callerVerifiedAsOfDate string echoed unchanged.

json

{
  "input": {
    "callerVerifiedSource": "independently-reviewed-source/edition",
    "callerVerifiedContext": "actual slope evidence, scale, historical/cartographic convention and independently established hachure-density bands",
    "callerVerifiedAsOfDate": "2026-01-01",
    "callerReferenceKeys": [
      "record-a",
      "record-b"
    ],
    "callerReferenceTexts": [
      "Illustrative qualified record; replace with actual applicable evidence.",
      "Second illustrative record, not normative data."
    ],
    "queryReferenceKey": "record-a"
  },
  "output": {
    "result": {
      "qualifiedReferenceText": "Illustrative qualified record; replace with actual applicable evidence.",
      "source": "independently-reviewed-source/edition",
      "context": "actual slope evidence, scale, historical/cartographic convention and independently established hachure-density bands",
      "asOfDate": "2026-01-01"
    }
  }
}

Limitations and assumptions

The tool checks input structure and retrieves supplied text. It does not verify the source, its authority, the truth of a record, or whether that record applies to a real case.
The query selects supplied text; no numerical model, classification rule or decision is inferred from its wording. The applicable subject and conditions must already be stated in callerVerifiedContext.
The date is supplied by the caller and checked as a date; freshness and edition applicability require independent review. The source is not fetched or updated.
At most 128 key/text pairs are accepted; keys and ordinary list strings are limited to 128 code units, and each reference text to 512. Keep full source material in an appropriate independently licensed reference system.

Alternative or Complementary methods

For a map-layout decision, inspect the rendered map at its intended size as well as its numerical dimensions. For classification or coordinate work, retain the chosen boundary and coordinate conventions with the result. Compare the scope of the nearby tools below before substituting one.

References

Tool behavior and example: Hachure Density Slope Band Classifier — tool.io

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