---
name: "r3.out.bin"
section: "1grass"
platform: "linux"
package: "grass-doc"
version: "8.4.1-1"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/r3.out.bin"
---

# r3.out.bin(1grass)

Exports a GRASS 3D raster map to a binary array.

## NAME

**r3.out.bin**  - Exports a GRASS 3D raster map to a binary array.

## KEYWORDS

raster3d, export, voxel

## SYNOPSIS

**r3.out.bin**\
 **r3.out.bin --help**\
 **r3.out.bin** \[-**rdi**\] **input**=*name* **output**=*name*  \[**null**=*float*\]  **bytes**=*integer*  \[**order**=*string*\]   \[--**overwrite**\]  \[--**help**\]  \[--**verbose**\]  \[--**quiet**\]  \[--**ui**\]

### Flags:

- **-r**

  Switch the row order in output from north-\>south to south-\>north

- **-d**

  Switch the depth order in output from bottom-\>top to top-\>bottom

- **-i**

  Write data as integer

- **--overwrite**

  Allow output files to overwrite existing files

- **--help**

  Print usage summary

- **--verbose**

  Verbose module output

- **--quiet**

  Quiet module output

- **--ui**

  Force launching GUI dialog

### Parameters:

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

  Name of input 3D raster map

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

  Name for output file

- **null**=*float*

  Value to write out for null\
   Default: *0*

- **bytes**=*integer* **\[required\]**

  Number of bytes per cell in binary file\
   Options: *1, 2, 4, 8*

- **order**=*string*

  Output byte order\
   Options: *big, little, native, swap*\
   Default: *native*

## DESCRIPTION

The *r3.out.bin* program exports a GRASS 3D raster map to a binary array file. Optionally, output can be send to standard output (stdout) for direct input (pipe) into other applications. Data is exported according to the original GRASS 3D raster type (float, double).

## NOTES

The write order of the rows (north-\>south to south-\>north) and the write order of the depths (bottom-\>top to top-\>bottom) can be switched.

The region parameters are printed to stderr when setting the verbose flag. Export of little and big endian byte order is supported.

Have a look at r3.out.ascii manual page that describes the internal layout of the 3D raster maps and the supported row and depth switch options.

## EXAMPLES

Have a look at the examples in r3.in.bin.

## SEE ALSO

*r3.in.bin,* *r3.in.ascii*

## AUTHOR

Sören Gebbert, based on r.out.bin from Bob Covill and Glynn Clements

## SOURCE CODE

Available at: r3.out.bin source code (history)

Accessed: Monday Feb 24 17:51:08 2025

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