UNU-HISTAX(1)

💖 UNU-HISTAX(1) 💖

okay bestie, pull up a chair, because this is unu-histax — a little User Command from the unu fam, and she is so much simpler than she looks. ✨

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🌸 NAME 🌸

unu-histax — replace each scanline along an axis with its histogram 💅

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🦋 SYNOPSIS 🦋

unu histax -a,--axis <axis> -b,--bin <bins> [-t,--type <type>]
[-min,--minimum <value>] [-max,--maximum <value>] [-blind8 <bool>]
[-i,--input <nin>] [-o,--output <nout>]

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✨ DESCRIPTION ✨

So like, the whole vibe is in the name, fr fr: replace each scanline along an axis with its histogram. Every scanline? Gets turned into its own little histogram. That's it. That's the job. 👑

• it uses nrrdHistoAxis under the hood, iykyk

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🎀 OPTIONS 🎀

• -a <axis>, --axis <axis> — the axis you're histogram-ing along. like, which direction are we slicing, bestie? (unsigned int)
• -b <bins>, --bin <bins> — how many bins the histogram gets. the more bins, the more detail. (unsigned int)
• -t <type>, --type <type> — the output type. default is "uint", no cap.
• -min <value>, --minimum <value> — the value that gets mapped to zero. you can hand it a plain old regular number, OR, if you slap a "%" suffix on it, then this minimum is defined as the percentage of samples in the input that are lower. so "0%" means the lowest input value is what's used, and "1%" means the 1% of the lowest values all get mapped to zero. if you just… don't use this option at all, the default behavior is that the lowest input value is used. (string); default: "nan"
• -max <value>, --maximum <value> — the value that gets mapped to the highest unsigned integral value. same deal as -min: give it a regular number, or give it a number with a "%" suffix and it means the percentage of samples in the input that are higher. "0%" means the highest input value is used — which is ALSO the default behavior, same as not using this option at all. (string); default: "nan"
• -blind8 <bool> — whether to know the range of 8-bit data blindly. like, uchar is always [0,255] and signed char is [-128,127], so should we just assume that? (bool); default: "true"
• -i <nin>, --input <nin> — the input nrrd, obviously 🥰
• -o <nout>, --output <nout> — the output nrrd. (string); default: "-" (which is stdout, so you can pipe her straight into the next thing, slay)

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👀 SEE ALSO 👀

• unu(1)

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ok important note bestie: -a/--axis and -b/--bin are the ones you genuinely cannot skip. they're not in brackets in the synopsis for a reason. everything else is optional. periodt. 💀

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Version vibes from August 2021, and this whole page lives under the UNU-HISTAX(1) header in the User Commands section of the manual. 🫶 that's a wrap, go histogram something iconic, mwah 💖🎀✨