VMTKMESHLAMBDA2(1)

✨ VMTKMESHLAMBDA2(1) — vmtk mesh lambda2, bestie edition ✨

okay so. hi. you found the manual page for vmtkmeshlambda2, a User Commands situation in section 1, and honestly? it's giving "small script, huge main character energy." 🫶

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💖 NAME 💖

vmtkmeshlambda2 — the vmtk script that does the thing. yes that's the whole name. iconic, no notes. ✨

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🌸 DESCRIPTION 🌸

Automatic piping, babe. vmtkmeshlambda2 parses its own options, sets up the whole pipeline vibe, and then does exactly what it says on the tin:

vmtkmeshlambda2 : compute lambda2 from a velocity field

like… that's the job. that's the whole job. and it slays at it. 💅

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🎀 Input arguments 🎀

okay bestie, these are the things you feed it. feed it well. 🍓

• -id Id (str,1); default=0 — the script id. it's a string, it defaults to 0, and it's how the script knows which one it is. lowkey just an identity crisis solver. 💜
• -handle Self (self,1) — handle to self. yes it's literally holding its own hand. self-love, we love to see it. 🫶
• -disabled Disabled (bool,1); default=0 — disable execution and piping. flip this to shut the whole thing down. it's the "not me today" switch. 💀
• -i Mesh (vtkUnstructuredGrid,1) — the input mesh. this is the mesh you're giving it. the main mesh. the star of the show. 👑
• -ifile MeshInputFileName (str,1) — filename for the default Mesh reader. give it a path and the default reader will handle the reading so you don't have to. 🎀
• -velocityarray VelocityArrayName (str,1); default=None — which array holds your velocity field. by default it's None, so like… no velocity, no lambda2. choose wisely bestie. 🌈
• -lambda2array Lambda2ArrayName (str,1); default=Lambda2 — the name for the lambda2 array it makes. default is Lambda2, which is perfectly normal and cute and correct. ✨
• -tolerance ConvergenceTolerance (float,1); default=1e-06 — convergence tolerance, a float, defaults to 1e-06. tiny number, big responsibilities. ngl that's a very precise little guy. 🧚
• -quadratureorder QuadratureOrder (int,1); default=3 — quadrature order, an int, defaults to 3. it's the math dial. leave it at 3 unless you know something we don't. 💅
• -ofile MeshOutputFileName (str,1) — filename for the default Mesh writer. where the output mesh goes when it's done cooking. 🦋

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🦋 Output arguments 🦋

and here's what it hands back to you when it's finished. bestie said "here, take this." 💖

• -id Id (str,1); default=0 — the script id again. yes it appears twice. no we're not going to talk about it. it's just like that. 🙈
• -handle Self (self,1) — handle to self again. still holding its own hand. still valid. still iconic. 👑
• -o Mesh (vtkUnstructuredGrid,1) — the output mesh. the moment we've all been waiting for. the glow-up. your mesh, but now with lambda2 in it. periodt. 🔥

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⭐ reminder bestie: -velocityarray's default is None, so if you don't tell it which array to use, it has nothing to compute from. set it. i'm begging. 😭

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💜 SEE YOU 💜

that's the whole page!! go forth and compute lambda2, you absolute genius. 💅✨

this was brought to you by vmtkmeshlambda2 1.5, April 2026 — mwah, take care of her, she's doing her best 🎀🫶💖