---
name: "protate"
section: "1"
platform: "linux"
package: "radiance"
version: "4R1+20120125-1+b1"
release: "Debian 7 (Wheezy)"
platforms: ["linux"]
url: "https://new.carta.tech/protate"
---

# protate(1)

rotate a RADIANCE picture.

## NAME

protate - rotate a RADIANCE picture.

## SYNOPSIS

**protate** \[ **-c** \]\[ **-r** \] **input** \[ **output** \]

## DESCRIPTION

*Protate* rotates a RADIANCE picture 90 degrees. This is useful for output on hardcopy devices with aspect ratios opposite to the input picture. By default, the image is rotated clockwise. The *-r* option may be used to rotate the image counter-clockwise instead.

The *-c* option indicates that the action is to correct an improper original image orientation, thus the recorded scanline ordering should not be changed.

## NOTES

To rotate an image 180 degrees, use *[pflip(1)](/pflip/1.md)* with both the *-h* and *-v* options.

## AUTHOR

Greg Ward

## SEE ALSO

[getinfo(1)](/getinfo/1.md), [pcompos(1)](/pcompos/1.md), [pfilt(1)](/pfilt/1.md), [pflip(1)](/pflip/1.md), [psign(1)](/psign/1.md), [rpict(1)](/rpict/1.md)