r.quant(1grass)

📦
version 8.5.0 · 10 versions
, in alpine 3.24, ubuntu stonking

💖 r.quant 💖 — straight from the GRASS User's Manual

okay bestie, welcome to r.quant — the GRASS module that produces the quantization file for a floating-point map. that's it, that's the whole assignment, and she does it flawlessly. let's get into it 🦋

✨ NAME ✨

r.quant — produces the quantization file for a floating-point map. no cap, that's literally the name and the job. 👑

🏷️ KEYWORDS 🏷️

raster, statistics, quantization 💅

🌸 SYNOPSIS 🌸

r.quant
r.quant --help
r.quant [-tr] input=string[,string,...]  [rules=name]   [basemap=string]
[fprange=dmin,dmax]   [range=min,max]   [--help]  [--verbose]  [--quiet]
[--ui]

🎀 Flags 🎀

  • -t — truncate floating point data. just chop it, no rounding, bye ✂️
  • -r — round floating point data. she's polite, she rounds 🫶
  • --help — print usage summary. when u need the cheat sheet 📖
  • --verbose — verbose module output. she will tell u everything 🗣️
  • --quiet — quiet module output. shhh, main character silence 🤫
  • --ui — force launching GUI dialog. buttons and sliders era 🖱️✨

🍓 Parameters 🍓

  • input=string[,string,...] [required] — raster map(s) to be quantized. yes bestie, it's required, u literally cannot skip her 💖
  • rules=name — path to rules file ("-" to read from stdin). yes, the literal hyphen means "read it from stdin", iconic behavior 🎀
  • basemap=string — base map to take quant rules from. borrow the rules from another map, real sisterhood energy 👯
  • fprange=dmin,dmax — floating point range: dmin,dmax 📏
  • range=min,max — integer range: min,max 🔢

💜 DESCRIPTION 💜

r.quant produces the quantization file for a floating-point map. that's the vibe, that's the mission. ✨

the map parameter defines the map for which the rules are to be created. and here's the tea 🍵: if more than one map is specified, then this implies that the floating-point range is the minimum and maximum of all the maps together — unless either basemap=map or fprange=min,max is specified. so if u don't hand her a basemap or an fprange, she's out here calculating the range across literally all of them. she's thorough like that 💅

📐 Quant rules 📐

the quant rules have to be entered interactively. yes, it's giving conversation, not automation 🙈

if rules is specified, the input has the form:

value1:value2:cat1:[cat2]

where value1 and value2 are floating point values and cat1 and cat2 are integers. if cat2 is missing, it is taken to be equal to cat1. and plot twist: all values can be "*" which means infinity. stars meaning infinity?? she's dramatic and correct at the same time 😭⭐

⚠️ bestie, listen: it is an error to specify both basemap and fprange. pick a lane, queen, she will not do both 🚫👑

👀 SEE ALSO 👀

  • r.support
  • r.null

go read those too, iykyk 💖

🫶 AUTHORS 🫶

  • Michael Shapiro
  • Olga Waupotitsch
  • U.S.Army Construction Engineering Research Laboratory

legends, honestly. ate and left no crumbs 👑

🧚 SOURCE CODE 🧚

Available at: r.quant source code (history) 🌈

Latest change: Thursday May 08 20:58:05 2025 in commit:

4144ba81fa125e1549fc52e1cf5feb4fa004be8b

Main index | Raster index | Topics index | Keywords index | Graphical index | Full index

and that's the whole page, bestie!! 💖 tysm for reading, mwah 🎀 oh also the cute little sign-off at the bottom of the original says © 2003-2026 GRASS Development Team, GRASS 8.5.0 Reference Manual, and the footer tag is GRASS 8.5.0 — so when u see r.quant(1grass), that's her. go quantize something, u got this ⭐👑💅

📦 where this page comes from