PLRGBHLS(3plplot)

💅 PLRGBHLS 💅

okay so this is a page from the PLplot API manual, and the star of the show is PLRGBHLS(3plplot) — say hi 👋

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✨ NAME ✨

plrgbhls — convert RGB color to HLS, bestie. that's it, that's the whole vibe. 🌈

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✨ SYNOPSIS ✨

plrgbhls(r, g, b, p_h, p_l, p_s)

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✨ DESCRIPTION ✨

so basically it takes RGB color coordinates and converts them to HLS. literally just a glow-up from one color space to another, no cap. 👑

Redacted form, for the record: General: plrgbhls(r, g, b, p_h, p_l, p_s)

and fun fact — this function is used in example 2. iconic behavior honestly. ⭐

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✨ ARGUMENTS ✨

• r (PLFLT(3plplot), input) — the red intensity of the color, 0.0-1.0. 🍓
• g (PLFLT(3plplot), input) — the green intensity of the color, 0.0-1.0. 🧚
• b (PLFLT(3plplot), input) — the blue intensity of the color, 0.0-1.0. 🦋
• p_h (PLFLT_NC_SCALAR(3plplot), output) — the returned value of the hue, in degrees (0.0-360.0), on the color cylinder. 🎡
• p_l (PLFLT_NC_SCALAR(3plplot), output) — the returned value of the lightness, expressed as a fraction (0.0-1.0) of the axis of the color cylinder. 💡
• p_s (PLFLT_NC_SCALAR(3plplot), output) — the returned value of the saturation, expressed as a fraction (0.0-1.0) of the radius of the color cylinder. 💖

like yes, the color cylinder is a real thing and yes it ate. 🫶

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👑 AUTHORS 👑

Many developers (who are credited at http://plplot.sourceforge.net/credits.php) have contributed to PLplot over its long history. shoutout to the whole squad, fr fr. 😭

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🔥 SEE ALSO 🔥

PLplot documentation at http://plplot.sourceforge.net/documentation.php. go read it, iykyk. 📚

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lowkey important: p_h, p_l, and p_s are outputs, so don't come in expecting to feed them values — the function hands them back to you. mind the PLFLT_NC_SCALAR types, bestie. 💅

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okay that's the whole page!! 💜 this cutie was served up as part of the PLplot API, dated August, 2026 — periodt. 🌸