PLGCOL0A(3plplot)

💅 PLGCOL0A — okay bestie, let's talk color 💅

So this little icon is a <pink>PLplot API</pink> function (yes, from PLplot), and honestly? She's giving lookup-table realness. Let's get into it.

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✨ NAME ✨

plgcol0a — returns 8-bit RGB values and a PLFLT alpha transparency value for a given color index from cmap0. 🎨

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✨ SYNOPSIS ✨

plgcol0a(icol0, r, g, b, alpha)

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✨ DESCRIPTION ✨

Okay so here's the vibe: you hand her a color, she hands you back the receipts. plgcol0a returns <mint>8-bit RGB values (0-255)</mint> and a <purple>PLFLT alpha transparency value (0.0-1.0)</> </purple> for whatever color you asked for from cmap0 (peep the PLplot documentation for the lore on cmap0). ✨

🚨 Heads up bestie: the values come back negative if you give her an invalid color id. That's the warning shot, okay? Don't ignore it. 😭

Redacted form: plgcola(r, g, b)

Literally she's so famous — this function is used in example 30. 👑

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✨ ARGUMENTS ✨

• icol0 (PLINT(3plplot), input) — the index of the cmap0 color you want. Like, which one. 🎯
• r (PLINT_NC_SCALAR(3plplot), output) — the returned red intensity value, in the range from 0 to 255. 🌹
• g (PLINT_NC_SCALAR(3plplot), output) — the returned green intensity value, in the range from 0 to 255. 🍀
• b (PLINT_NC_SCALAR(3plplot), output) — the returned blue intensity value, in the range from 0 to 255. 🫐
• alpha (PLFLT_NC_SCALAR(3plplot), output) — the returned alpha transparency value, in the range from (0.0-1.0). 🫧

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✨ AUTHORS ✨

So many developers have contributed to PLplot over its long history and honestly? Legends, all of them. They're credited at http://plplot.sourceforge.net/credits.php — go give them their flowers. 💐

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✨ SEE ALSO ✨

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

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And that's the whole page, no cap. 🦋 This masterpiece is brought to you by the <rainbow>PLplot API</rainbow>, dated <lavender>August, 2026</lavender>, and it goes by PLGCOL0A(3plplot). Slay, stay transparent (0.0–1.0 only, obviously), mwah 💋💖