Cadastralឧបករណ៍ដំណើរការ

Shape Quality Check

ពិនិត្យក្បាលដីនីមួយៗធៀបនឹងកម្រិតគុណភាពធរណីមាត្របួន — ផ្ទៃអប្បបរមា ទទឹងអប្បបរមា ភាពបង្រួមអប្បបរមា និងមុំស្រួច — រួចសរសេរស្រទាប់សម្គាល់បង្ហាញថាក្បាលដីណាធ្លាក់ការធ្វើតេស្តណា។

រកឃើញនៅឯណា
KGA Toolbox ▸ Geoprocessing ▸ Cadastral Tools ▸ Shape Quality Check

ទិដ្ឋភាពទូទៅ

Sliver polygons, needle-thin offcuts, and spike vertices are the usual residue of digitising and of overlay operations. This tool finds them all in one pass.

ការប្រើប្រាស់

  • Four independent thresholds each catch a different defect:
ParameterDefaultCatches
Minimum Area10Slivers and offcuts too small to be real parcels
Minimum Width1Needle-thin polygons that may have adequate area but no usable width
Minimum Compactness (0-1)0.05Highly elongated or convoluted shapes
Spike Angle Threshold (degree)5Vertices forming a near-zero angle — the classic digitising spike
  • Minimum Compactness is a ratio from 0 to 1, where 1 is a perfect circle. The default of 0.05 is deliberately permissive and flags only severely degenerate shapes; raise it toward 0.2–0.3 to catch merely awkward parcels as well. Legitimate long riverside or roadside strips are genuinely elongated and will be flagged as compactness rises — expect to review, not simply delete, what this test reports.
  • Minimum Area and Minimum Width are in the layer's coordinate system units, so the layer should be projected.
  • Add Result to Map is checked by default, so the flagged layer is added to the map ready for inspection.
  • Every parcel is written to the output, not just the failures — the flags record which tests each parcel failed. Symbolise or filter on the flag fields to isolate the problems.

ប៉ារ៉ាម៉ែត្រ

Parameters for Shape Quality Check
ឈ្មោះប្រភេទទិន្នន័យការពិពណ៌នា
Input Parcel LayerFeature Layer

The parcel layer to check. Polygon geometry only.

Output Flagged LayerFeature Class

The output feature class carrying the quality flags.

Minimum AreaDouble

The area below which a parcel is flagged, in the layer's coordinate system units. Default is 10.

Minimum WidthDouble

The width below which a parcel is flagged, in the layer's coordinate system units. Default is 1.

Minimum Compactness (0-1)Double

The compactness ratio below which a parcel is flagged, where 1 is a perfect circle. Default is 0.05.

Spike Angle Threshold (degree)Double

The vertex angle below which a spike is flagged. Default is 5.

Add Result to Mapជម្រើសBoolean

Adds the flagged layer to the active map.

  • Checked (default) — The layer is added.
  • Unchecked — The feature class is created but not added.

Derived Output

Parameters for Shape Quality Check — Derived Output
ឈ្មោះប្រភេទទិន្នន័យការពិពណ៌នា
Output LayerFeature Layer

The flagged layer as added to the map.

របៀបប្រើ

  1. Confirm the parcel layer uses a projected coordinate system.
  2. On the KGA Toolbox tab, in the Geoprocessing group, open the Cadastral Tools gallery and click Shape Quality Check.
  3. Set Input Parcel Layer and Output Flagged Layer.
  4. Review the four thresholds. The defaults find severe defects; tighten Minimum Compactness toward 0.2 to catch awkward shapes as well.
  5. Leave Add Result to Map checked.
  6. Click Run.
  7. Symbolise or filter the output on its flag fields, and review each flagged parcel before correcting it — an elongated riverside strip may be perfectly legitimate.

ព័ត៌មានអាជ្ញាបណ្ណ

Requires an active KGA Toolbox license. The tool validates the license before running.

មើលផងដែរ

ត្រឡប់ទៅឯកសារណែនាំ