VMTKSURFACETRANSFORMTORAS(1)

💖 NAME 💖

vmtksurfacetransformtoras — bestie it's a vmtk script, and its whole Thing is taking a surface that was made over in XYZ image space and sliding it on over into RAS space ✨

🌸 DESCRIPTION 🌸

okay so first things first: Automatic piping. vmtksurfacetransformtoras parses its options, no cap. That's literally what it does on the setup side 💅

Then the actual glow-up, and I'm gonna say it plainly:

vmtksurfacetransformtoras : transform a surface generated in XYZ image space into RAS space 🦋

like. XYZ in. RAS out. that's the vibe. moving on bestie, because there are inputs to feed it and outputs it hands back 🎀

✨ Input arguments ✨

• -id Id (str,1); default=0 — the script id, it's how the script knows who it is 🪪
• -handle Self (self,1) — a handle to self. yes it's holding its own hand, we love that for it 🫶
• -disabled Disabled (bool,1); default=0 — turn this on and you're straight up disabling execution and piping. no running, no passing things along 🙈
• -i Surface (vtkPolyData,1) — the input surface. the star of the show 👑
• -ifile SurfaceInputFileName (str,1) — filename for the default Surface reader 📂
• -matrix XyzToRasMatrixCoefficients (float,16); default=None — the coefficients of the XYZToRAS transform matrix. sixteen floats of pure transformation energy 🔥
• -invert InvertMatrix (bool,1); default=0 — inverts the XyzToRasMatrixCoefficients matrix. here's the important part, don't skip it: additional transforms to surface in RAS space require the inverse transform reverting the surface back to an axis aligned frame. it's giving "undo so you can redo" 😭
• -ofile SurfaceOutputFileName (str,1) — filename for the default Surface writer ✍️

💜 Output arguments 💜

• -id Id (str,1); default=0 — the script id again, still the script id, always the script id 🪪
• -handle Self (self,1) — handle to self, again. consistency icon 🌈
• -o Surface (vtkPolyData,1) — the output surface. the transformation is complete, she's in RAS now and she's flawless ⭐

💀 reminder bestie: -invert is the one with the long explanation. if you're doing additional transforms to a surface in RAS space, you need the inverse transform to revert the surface back to an axis aligned frame. that's not me being dramatic, that's just the facts 🫶

and that's the whole page, periodt 💅 written by the vmtksurfacetransformtoras 1.5 girlies, dated April 2026, and yes, obviously it lives under VMTKSURFACETRANSFORMTORAS(1) in the User Commands section. iykyk 🎀🦋