VMTKLINEARTOQUADRATIC(1)

🦋 VMTKLINEARTOQUADRATIC(1) 🦋

okay bestie, welcome to the glow-up station 💅 this is the manual page for vmtklineartoquadratic, a vmtk script, and she is literally here to take your mesh from linear to quadratic. iconic behavior, no cap.

✨ NAME ✨

vmtklineartoquadratic — vmtk script vmtklineartoquadratic

🌸 DESCRIPTION 🌸

Automatic piping vmtklineartoquadratic Parsing options vmtklineartoquadratic

so like. vmtklineartoquadratic : convert the elements of a mesh from linear to quadratic. that's the whole vibe. she takes your cute little linear elements and gives them the extra nodes they deserve. main character energy fr fr 💖

💖 Input arguments: 💖

• -id Id (str,1); default=0 — script id. it's the id. of the script. yeah.
• -handle Self (self,1) — handle to self. she's holding her own hand, as she should 🫶
• -disabled Disabled (bool,1); default=0 — disable execution and piping. flip this on and she just… doesn't. respect.
• -i Mesh (vtkUnstructuredGrid,1) — the input mesh. your baby. the thing you're about to upgrade.
• -ifile MeshInputFileName (str,1) — filename for the default Mesh reader. point her at a file instead of handing her the object.
• -r Surface (vtkPolyData,1) — the reference surface to project nodes onto. this is the surface the projected nodes get snapped to, bestie, very important ✨
• -rfile SurfaceInputFileName (str,1) — filename for the default Surface reader.
• -mode Mode (str,1) in ['volume', 'surface']; default=volume — kind of elements to work with. are we doing volume elements or surface elements? you pick.
• -biquadraticwedge UseBiquadraticWedge (bool,1); default=True — if on, convert linear wedges to 18-noded biquadratic quadratic wedges, otherwise use 15-noded quadratic wedges. 18 nodes or 15 nodes, that's the choice 😌
• -capsurface CapSurface (bool,1); default=False — if on, cap the reference surface before projecting. close that baby up first 🎀
• -entityidsarray CellEntityIdsArrayName (str,1); default=None — name of the array where entity ids relative to cells are stored.
• -jacobianrelaxation JacobianRelaxation (bool,1); default=0 — if on, relax projected nodes until Jacobians are all positive. negative Jacobians are giving red flag energy 🚩 so this one chills everyone out until the vibes are positive.
• -projectedid ProjectedCellEntityId (int,1); default=1 — id of the entity that is to be projected onto the reference surface.
• -quadratureorder QuadratureOrder (int,1); default=10 — quadrature order for checking negative Jacobians.
• -jacobiantolerance NegativeJacobianTolerance (float,1); default=0.0 — tolerance for the evaluation of negative Jacobians. how close to zero counts as a problem, basically.
• -subdivisionmethod SubdivisionMethod (str,1) in ['linear', 'butterfly']; default=linear — subdivision method for surface elements. butterfly option is lowkey so cute 🦋 but linear is the default.
• -hexahedranodes NumberOfNodesHexahedra (int,1); default=27 — Output hexahedral element type by # of nodes: 20 or 27 (see vtkQuadraticHexahedron and vtkTriQuadraticHexahedron classes in VTK documentation). yes she's citing her sources, we love a girl who reads the docs 📚
• -ofile MeshOutputFileName (str,1) — filename for the default Mesh writer. where the glow-up gets saved 💾

ngl bestie, keep your eyes on -mode, -biquadraticwedge and -hexahedranodes — those three are the ones deciding what kind of elements you actually walk away with. don't just let them default and then act surprised ✋

👑 Output arguments: 👑

• -id Id (str,1); default=0 — script id. she said the same thing twice and honestly? consistency.
• -handle Self (self,1) — handle to self. still holding her own hand 💜
• -o Mesh (vtkUnstructuredGrid,1) — the output mesh. the after picture. the quadratic serve. she ate and left no crumbs 🔥

that's the whole page bestie, every option, every default, every last (str,1) and (bool,1) accounted for. nothing skipped, nothing invented, we are honest in this group chat 💖✨

vmtklineartoquadratic version 1.5, April 2026, iykyk — go make some quadratic elements and text me when you're done 🎀🦋💅