UNU-W2I(1)

✨ UNU-W2I(1) — the "where does this world position live in my array" page ✨

okay bestie, welcome to the manual for unu-w2i, a lil User Command that converts from 1-D world to index position. yes it's giving "wait why do I need this", but trust, it's lowkey iconic. 💅

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🌸 NAME 🌸

unu-w2i — converts from 1-D world to index position

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✨ SYNOPSIS ✨

unu w2i <center> <minPos> <maxPos> <num> <world>

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🦋 DESCRIPTION 🦋

so here's the vibe: this converts from 1-D world to index position. you give it the centering of the data (cell vs. node, more on that in a sec), the range of positions, and the number of intervals that position has been quantized into, and it hands you back the index. 🎀

important lore though: this is a demo/utility, and it does not actually operate on any nrrds. it's just vibing. fr fr. 🙈

it was previously available as the stand-alone pos2idx binary, so if that name rings a bell for you, that's why. glow-up era. 👑

Uses NRRD_IDX macro ✨

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💖 OPTIONS 💖

• <center> — which centering applies to the quantized position. the possibilities are, and I quote the vibe:
  • "cell" for histogram bins, quantized values, and pixels-as-squares
  • "node" for non-trivially interpolated sample points
• <minPos> — smallest position associated with index 0 (double)
• <maxPos> — highest position associated with highest index (double)
• <num> — number of intervals into which position has been quantized (double)
• <world> — the input world position, to be converted to index (double)

not me reminding you that like four of these are doubles 🫶 they're literally all typed, don't come for me.

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🌈 SEE ALSO 🌈

• unu(1)

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that's the whole page bestie, no cap. go forth and index responsibly. 💜

this masterpiece of a manual page is from April 2021 and lives under the source/version tag UNU-W2I(1). mwah, slay, bye. 🎀✨