Cadastralឧបករណ៍ដំណើរការ

Using buffer method (Trim Parcel by Road)

កាត់ព្រំដែនក្បាលដីថយមកត្រឹមគែមច្រករបៀងផ្លូវ ដែលបង្កើតដោយ buffer ខ្សែកណ្តាលផ្លូវ ដោយដកផ្ទៃក្បាលដីណាដែលត្រួតលើផ្លូវ។

រកឃើញនៅឯណា: KGA Toolbox ▸ Geoprocessing ▸ Trim Parcels ▸ Using buffer method

ទិដ្ឋភាពទូទៅ

This is the simpler of the two trim methods. It buffers the centreline rather than constructing true parallel offsets, which is faster to set up but less exact at junctions.

ការប្រើប្រាស់

The width parameter here is a half-width. Road Width (Half of total distance) takes half the total road width — for a 10 m road, enter 5 Meters. This differs from Using parallel method, where the width parameters take the total width. Mixing the two conventions produces a corridor either half or double the intended size.

Road Width Type decides where the width comes from:
- Linear Unit (default) — a single half-width from Road Width (Half of total distance).
- Field — a per-road width from Field contains Road Width (Full). Note that this field holds the full width, not the half-width.
End Type controls how the corridor terminates:
- FLAT (default) — the buffer is squared off at the line ends, which is correct where a road continues beyond the study area.
- ROUND — the buffer is capped with a semicircle, which extends the corridor past the end of the centreline.
Because the corridor is a buffer, junctions are rounded rather than mitred. Where junction geometry must be exact, use Using parallel method instead.
Trim the input Land Parcel decides whether the parcel layer is modified in place or a new trimmed layer is written to Output Trimmed Land Parcel. Work on a copy until the result has been checked.
Ouput Road Edge? writes the corridor edge to Output road edge feature, and Append Road Edge to Input Road Layer? adds those edges into the input road layer.

ប៉ារ៉ាម៉ែត្រ

Parameters for Using buffer method (Trim Parcel by Road)
ឈ្មោះ	ប្រភេទទិន្នន័យ	ការពិពណ៌នា
Trim the input Land Parcelជម្រើស	Boolean	Modifies the input parcel layer in place instead of writing a new one. Checked — The input geometry is trimmed in place. Unchecked — The result is written to Output Trimmed Land Parcel.
Input Land Parcel Layer	Feature Layer	The parcel layer to trim. Polygon geometry only.
Input Road Center Layer	Feature Set	The road centreline to buffer. Polyline geometry only.
Road Width Type	String	Where the corridor width comes from. Default is `Linear Unit`. `Linear Unit` — a half-width from Road Width (Half of total distance) `Field` — a full width from Field contains Road Width (Full)
Road Width (Half of total distance)ជម្រើស	Linear Unit	Half the total road width. For a 10 m road, enter `5 Meters`. Default is `0 Meters`. Used with `Linear Unit`.
Field contains Road Width (Full)ជម្រើស	Field	The field holding each road's full width. Used with `Field`. Long, short, double, or float.
End Typeជម្រើស	String	How the corridor terminates at the ends of the centreline. Default is `FLAT`. `FLAT` — squared off at the line end `ROUND` — capped with a semicircle
Output Trimmed Land Parcelជម្រើស	Feature Class	The trimmed parcel feature class. Required when Trim the input Land Parcel is unchecked.
Ouput Road Edge?ជម្រើស	Boolean	Writes the corridor edge as a separate feature class. Checked — Output road edge feature is enabled. Unchecked — No road edge is written.
Output road edge featureជម្រើស	Feature Class	The corridor edge feature class. Required when Ouput Road Edge? is checked. The path is pre-filled from the input road layer's workspace.
Append Road Edge to Input Road Layer?ជម្រើស	Boolean	Appends the generated road edge into the input road layer.

របៀបប្រើ

Make a copy of the parcel layer if you intend to trim in place.
On the KGA Toolbox tab, in the Geoprocessing group, open the Trim Parcels gallery and click Using buffer method.
Set Input Land Parcel Layer and Input Road Center Layer.
Set Road Width Type:
- For a uniform road, keep Linear Unit and enter half the total width in Road Width (Half of total distance).
- For varying widths, choose Field and set Field contains Road Width (Full) to a field holding the full width.
Set End Type — FLAT where the road continues past the study area.
Leave Trim the input Land Parcel unchecked and set Output Trimmed Land Parcel for a first run.
To keep the corridor edge, check Ouput Road Edge? and confirm Output road edge feature.
Click Run, then check the junctions. If rounded junction geometry is unacceptable, switch to Using parallel method.

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

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