Summary

The GT_PLFILTER command in GeoTools provides a powerful method for filtering polylines based on their geometric and attribute properties, making it a useful tool for surveyors, GIS professionals, and CAD drafters in BricsCAD, AutoCAD, ZWCAD and ARES Commander.

GeoTool -> Selection Tools -> Selection Tools -> Polylines based on properties

Key Features Include:

• Comprehensive Polyline Filtering Options:
  • 2D or 3D Polylines
  • Open or Closed Polylines
  • Fitted, Arc Segments, Splined, Meshed, or Polyface Polylines
• Attribute-Based Filtering:
  • Z Value (Elevation-based filtering)
  • Width & Length
  • Number of Vertices
  • Area
  • Start-End Distance
  • Segment Length
• Advanced Selection Criteria:
  • Apply logical operators to refine selection:
    • < n (Less than)
    • <= n (Less than or equal to)
    • > n (Greater than)
    • >= n (Greater than or equal to)
    • = n (Equal to)
    • /= n (Not equal to)
  • Example: Selecting polylines with area ≤ 55.0 ensures only relevant objects are included.
• Practical Applications:
  • Extract specific contour polylines based on Z-values.
  • Filter polylines by length, area, or vertex count for simplified analysis.
  • Isolate closed polylines for boundary detection in GIS and land mapping.

Benefits:

This tool helps optimize selection and modification of polylines, improving workflow efficiency in CAD environments.