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

# t.rast.out.vtk(1grass)

Exports space time raster dataset as VTK time series.

## NAME

**t.rast.out.vtk**  - Exports space time raster dataset as VTK time series.

## KEYWORDS

temporal, export, output, raster, VTK, time

## SYNOPSIS

**t.rast.out.vtk**\
 **t.rast.out.vtk --help**\
 **t.rast.out.vtk** \[-**pcg**\] **input**=*name* **directory**=*string*  \[**elevation**=*name*\]   \[**where**=*sql\_query*\]   \[**null**=*float*\]   \[--**help**\]  \[--**verbose**\]  \[--**quiet**\]  \[--**ui**\]

### Flags:

- **-p**

  Create VTK point data instead of VTK cell data (if no elevation map is given)

- **-c**

  Correct the coordinates to fit the VTK-OpenGL precision

- **-g**

  Export files using the space time dataset granularity for equidistant time between maps, where statement will be ignored

- **--help**

  Print usage summary

- **--verbose**

  Verbose module output

- **--quiet**

  Quiet module output

- **--ui**

  Force launching GUI dialog

### Parameters:

- **input**=*name* **\[required\]**

  Name of the input space time raster dataset

- **directory**=*string* **\[required\]**

  Path to the export directory

- **elevation**=*name*

  Name of input elevation raster map

- **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’

- **null**=*float*

  Value to represent no data cell\
   Default: *-99999.99*

## DESCRIPTION

*t.rast.out.vtk* exports all maps registered in a space time raster datasets as VTK legacy files using a numerical numbering scheme. The VTK files can be visualized with any VTK based visualize. Our preferred tool is ParaView. The VTK legacy files are created using **r.out.vtk**.

## EXAMPLE

In this simple example we create several raster maps with random values and one elevation map. The random value raster maps are registered in a space time raster dataset. All maps of this space time raster dataset are exported using **t.rast.out.vtk** into the directory **/tmp/export**.\

```
mkdir /tmp/export
t.rast.out.vtk input=precip_abs directory=/tmp/export/ elevation=elevation
ls -1 /tmp/export
000000_tempmean_monthly.vtk
000001_tempmean_monthly.vtk
000002_tempmean_monthly.vtk
000003_tempmean_monthly.vtk
000004_tempmean_monthly.vtk
000005_tempmean_monthly.vtk
000006_tempmean_monthly.vtk
000007_tempmean_monthly.vtk
000008_tempmean_monthly.vtk
000009_tempmean_monthly.vtk
000010_tempmean_monthly.vtk
000011_tempmean_monthly.vtk
```

## SEE ALSO

*r.out.vtk,* *ParaView*

## AUTHOR

Sören Gebbert, Thünen Institute of Climate-Smart Agriculture

## SOURCE CODE

Available at: t.rast.out.vtk source code (history)

Accessed: Monday Feb 24 17:51:47 2025

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