---
name: "t.upgrade"
section: "1grass"
platform: "linux"
package: "grass-doc"
version: "8.4.1-1"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/t.upgrade"
---

# t.upgrade(1grass)

Upgrades the version of the temporal database.

## NAME

**t.upgrade**  - Upgrades the version of the temporal database.

## KEYWORDS

temporal, metadata, time

## SYNOPSIS

**t.upgrade**\
 **t.upgrade --help**\
 **t.upgrade**  \[--**help**\]  \[--**verbose**\]  \[--**quiet**\]  \[--**ui**\]

### Flags:

- **--help**

  Print usage summary

- **--verbose**

  Verbose module output

- **--quiet**

  Quiet module output

- **--ui**

  Force launching GUI dialog

## DESCRIPTION

The *t.upgrade* module upgrades the temporal database in the current mapset from version 2 (default in GRASS 7) to 3 (default in GRASS 8). The version 3 introduces a semantic label support, see *i.band.library* for details.

## EXAMPLE

```
t.upgrade
```

## SEE ALSO

*t.info*

## AUTHORS

Martin Landa and Markus Neteler

## SOURCE CODE

Available at: t.upgrade source code (history)

Accessed: Monday Feb 24 17:51:47 2025

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