hatched map

Map-technique boundary

Record whether the catalogued subject is a map representation or the hachuring technique, retaining the registry entry without creating an unsupported split.

1. What registry evidence establishes whether this entry denotes maps using hachures or the technique itself? definition
2. Does an existing Vercy map or relief model already own this concept? boundary

Relief-function evidence

Require a legend, documented convention or qualified visual interpretation to classify strokes as relief hachures.

1. Which evidence shows that these strokes portray relief rather than land cover, water or administrative categories? definition
2. Are hachures the principal relief portrayal or combined with contours, elevation tints or hillshade? boundary

Orientation rule

Record the applicable direction rule and exceptions, without assuming that a stroke alone identifies which end is downhill.

1. What documented relationship connects stroke orientation to terrain slope? definition
2. What additional evidence distinguishes uphill from downhill and ridges from valleys? measurement

Encoding calibration

Treat each visual variable as uncalibrated until the map's convention supports a specific interpretation.

1. Which stroke variables encode slope, illumination or another documented property? definition
2. Does the evidence support qualitative ordering, discrete classes or a numerical relationship? measurement
3. Where do overlaps, lettering or printing variation prevent that relationship from being read? boundary

Spatial reference

Distinguish the original map reference from coordinates assigned to a later digital copy.

1. What area, nominal scale, orientation and coordinate reference are documented for this sheet or edition? measurement
2. Which control points and residual errors support a later georeferencing transformation? provenance

Evidence and generalisation

Record terrain sources and known simplifications separately from the date and appearance of the published map.

1. Which observations, surveys, predecessor maps or elevation datasets informed these hachures, and when? provenance
2. What evidence identifies omitted, exaggerated or simplified terrain features? boundary
3. Which relief regions have unknown or conflicting source histories? provenance

Hachure revision lineage

Distinguish substantive changes to the relief portrayal from changes in printing, carrier or digitisation.

1. Which work, edition, sheet and item does the inspected hachure portrayal belong to? provenance
2. Were strokes redrawn or corrected, or does the apparent difference arise from reproduction? boundary

Reproduction fidelity

Assess merged lines, missing fine strokes, contrast shifts and local distortion at the intended viewing scale.

1. At what reproduction size or image resolution do necessary stroke distinctions become unreadable? measurement
2. Which regions show stroke loss, merging, damage or distortion relative to the best available reference? measurement
3. Who created or revised the relief portrayal and digital reproduction, and which recorded rights apply to the proposed reuse? action

Inference limits

Attach confidence and supporting evidence to terrain interpretations, keeping numerical claims conditional on calibration.

1. Which landform or relative-steepness interpretations are supported by the convention and legibility of this region? measurement
2. What independent evidence would be required before reporting a slope angle or elevation? boundary
3. Where should an agent abstain from interpretation because marks or conventions are ambiguous? action

Transformation validation

Preserve traceability when georeferencing, resampling, tracing or converting strokes into another relief representation.

1. Which proposed transformations preserve the documented meanings of stroke direction, spacing and weight? action
2. How will the derivative be checked for lost strokes, false connections and spatial distortion? measurement
3. How will inferred terrain content be distinguished from marks directly transcribed from the source map? provenance

Check these first

Recalled without web access and unsourced; every item is a lead to verify.

1. Which of these check these first hold for the sense of hatched map this model covers, and on what evidence? provenance

Kinds and varieties

Recalled without web access and unsourced; every item is a lead to verify.

1. Which of these kinds and varieties hold for the sense of hatched map this model covers, and on what evidence? provenance

Real-world use

Recalled without web access and unsourced; every item is a lead to verify.

1. Which of these real-world use hold for the sense of hatched map this model covers, and on what evidence? provenance

Failure modes and hazards

Recalled without web access and unsourced; every item is a lead to verify.

1. Which of these failure modes and hazards hold for the sense of hatched map this model covers, and on what evidence? provenance

Neighbouring kinds and how to tell them apart

Recalled without web access and unsourced; every item is a lead to verify.

1. Which of these neighbouring kinds and how to tell them apart hold for the sense of hatched map this model covers, and on what evidence? provenance