t.topology(1)

📦
version 8.4.2 · 8 versions
, in fedora 44

💅 t.topology — the GRASS GIS tea ☕

okay bestie, gather round, because this is t.topology(1) from the GRASS GIS User's Manual and it's literally here to spill the temporal topology of your space time dataset. no cap. 🫶

✨ NAME ✨

t.topology — lists temporal topology of a space time dataset. that's it, that's the whole job, and she does it flawlessly. 👑

🌸 KEYWORDS 🌸

temporal, topology, time

(three little words, three big vibes. iykyk.)

🦋 SYNOPSIS 🦋

t.topology
t.topology --help
t.topology [-ms] input=name  [type=name]   [where=sql_query]   [--help]
[--verbose]  [--quiet]  [--ui]

🎀 Flags

  • -m — print temporal topological relationships and then dip. exit stage left. ✨
  • -s — print spatio-temporal topological relationships and exit. she's doing both dimensions now, main character energy.
  • --help — print usage summary. your lil cheat sheet.
  • --verbose — verbose module output. she's chatty, we love that.
  • --quiet — quiet module output. she's mysterious, we also love that.
  • --ui — force launching GUI dialog. for when clicking > typing, no judgement. 💅

🍓 Parameters

  • input=name [required] — name of the input space time dataset. yes it's required, yes you have to give it, don't fight it.
  • type=name — type of the input space time dataset.
    • Options: strds, stvds, str3ds
    • Default: strds
  • where=sql_query — WHERE conditions of SQL statement without where keyword used in the temporal GIS framework.
    • Example: start_time > '2001-01-01 12:30:00'

💖 DESCRIPTION 💖

so the module t.topology lists temporal relations of the maps in a space time dataset. that's the vibe. it's giving "let me tell you exactly how these maps relate to each other" and honestly? obsessed.

🌈 EXAMPLE 🌈

in order to obtain information about space time dataset topology, run:

t.topology tempmean_monthly@climate_2009_2012
 +-------------------- Basic information -------------------------------------+
 | Id: ........................ tempmean_monthly@climate_2009_2012
 | Name: ...................... tempmean_monthly
 | Mapset: .................... climate_2009_2012
 | Creator: ................... lucadelu
 | Temporal type: ............. absolute
 | Creation time: ............. 2014-11-28 10:40:55.060096
 | Modification time:.......... 2014-11-28 16:08:42.166628
 | Semantic type:.............. mean
 +-------------------- Temporal topology -------------------------------------+
 | Is subset of dataset: ...... False
 | Temporal topology is: ...... valid
 | Number of intervals: ....... 48
 | Invalid time stamps: ....... 0
 | Number of points: .......... 0
 | Number of gaps: ............ 0
 | Granularity: ............... 1 month
 +-------------------- Topological relations ---------------------------------+
 | Overlaps: .................. 0
 | Overlapped: ................ 0
 | Finishes: .................. 0
 | Started: ................... 0
 | Follows: ................... 47
 | Contains: .................. 0
 | Equal:...................... 0
 | Finished: .................. 0
 | Precedes: .................. 47
 | Starts: .................... 0
 | During: .................... 0
 +----------------------------------------------------------------------------+

look at those Follows: 47 and Precedes: 47 bestie. the dataset is literally in a situationship with itself and it's valid. ✨💀

👀 SEE ALSO 👀

t.create, t.info

go read those too, they're the supporting cast and they ate. 🫶

🧚 AUTHOR 🧚

Sören Gebbert, Thünen Institute of Climate-Smart Agriculture

iconic. legend. thank you for your service. 🎀

🔥 SOURCE CODE 🔥

Available at: t.topology source code (history)

Accessed: Saturday Jan 17 05:41:53 2026

Main index | Temporal index | Topics index | Keywords index | Graphical index | Full index

© 2003-2025 GRASS Development Team, GRASS GIS 8.4.2 Reference Manual

and that's the whole page, bestie. 💜 no notes, no edits, all the details intact.

k byeee — this was t.topology(1) from GRASS 8.4.2, brought to you by the GRASS Development Team (© 2003-2025, GRASS GIS 8.4.2 Reference Manual), accessed Saturday Jan 17 05:41:53 2026. slay. 💅✨🌸

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