TEND-ANPLOT(1)

✨ NAME ✨

tend-anplot — graph anisotropy metric in barycentric coords 🎀

okay bestie, this is the one that draws your anisotropy metrics all pretty in barycentric coordinates. it's giving math but make it art 💅

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🌸 SYNOPSIS 🌸

tend anplot [-r <res>] [-w] [-hflip] [-nan] -a <aniso> [-o <nout>]

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🦋 DESCRIPTION 🦋

So like. This graphs an anisotropy metric in barycentric coordinates ✨ All the metrics go from 0.0 to 1.0, no cap, and they get sampled in the lower right half of the image. The plane they're sampled on is a surface of constant trace. Very demure, very mindful 🧚

Now here's the tea — you're probably gonna want to run this first:

unu resample -s = x0.57735 -k tent

to transform the triangle into a 30-60-90 triangle 🫶

And then:

ilk -t 1,-0.5,0,0,0.866,0 -k tent -0 u:0,1 -b pad -bg 0

(possibly followed by teem/src/limntest/triimg, iykyk) to transform the domain into an equilateral triangle ⭐

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💖 OPTIONS 💖

• -res <res> — resolution of the anisotropy plot (int); default: "256" — this is the glow-up size of your pic, bestie 📐
• -w — sample the whole triangle of constant trace, instead of just the sixth of it where the eigenvalues have the traditional sorted order. go big or go home fr fr 👑
• -hflip — flip the two bottom corners (swapping the place of linear and planar). a little chaos, as a treat 🙈
• -nan — set the pixel values outside the triangle to be NaN, instead of 0. not a number, not a problem 💀
• -a <aniso> — which anisotropy metric to plot. All the Westin metrics come in two versions, so pay attention bestie. Currently supported:
  • "cl1", "cl2": Westin's linear 🌈
  • "cp1", "cp2": Westin's planar 🍓
  • "ca1", "ca2": Westin's linear + planar ✨
  • "cs1", "cs2": Westin's spherical 🔥
  • "ct1", "ct2": GK's anisotropy type (cp/ca) 💜
  • "ra": Basser/Pierpaoli relative anisotropy/sqrt(2) 🎀
  • "fa": Basser/Pierpaoli fractional anisotropy ⭐
  • "vf": volume fraction = 1-(Basser/Pierpaoli volume ratio) 🦋
  • "tr": trace 👑
• -o <nout> — output image (floating point) (string) default: "-" — floating point output, because we're extra like that 💅

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👑 SEE ALSO 👑

tend(1), ilk(1), unu-resample(1)

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k that's the whole vibe, bestie 🫶 this page is living its April 2021 era, and yes, it's from the TEND-ANPLOT(1) manual, section one, main character energy only 💖✨