---
name: "gpiv_manipiv"
section: "1"
platform: "linux"
package: "gpivtools"
version: "0.6.0-3.1"
release: "Debian 8 (Jessie)"
platforms: ["linux"]
url: "https://new.carta.tech/gpiv_manipiv"
---

# gpiv\_manipiv(1)

Simple data manipulation tool for PIV data.

## NAME

gpiv\_manipiv, gpiv\_fasty, gpiv\_flipx, gpiv\_flipy, gpiv\_revert, gpiv\_rot90,  gpiv\_rot180 - Simple data manipulation tool for PIV data.

## SYNOPSIS

**gpiv\_manipiv**  \[**-h** \| **--help**\]  \[**-p** \| **--print**\]  \[**-v** \| **--version**\]  \[**-fi** *x0 y0 x1 y1*\] \[**-no\_fi** \| **--pass** *x0 y0 x1 y1*\] \[**-fy**\] \[**-r**\] \[**--rev**\] \[**-x**\] \[**-y**\]  \[*filename*\]  \< *stdin* \> *stdout*

## DESCRIPTION

**gpiv\_manipiv** *manipulates order and positions of PIV data, mirrors* *(flips) the data in horizontal (x) or vertical (y) direction,* *rotates over 90 and 180 degrees. As rotating over 180 degrees is* *identic to flipping over x as well as over y-direction, the program* *must be called twice or must be called once by* **rot180**.

The parameters read from the configuration resources (containing the key **POST**) may be overruled by the command line options, as explained below. In case an alias name of **gpiv\_manipiv** has been used, all non-relevant parameters are disabled.

## Options

- **-fi** *x0 y0 x1 y1*

  **filters out data from a piv data stream from location (***x0***,***y0***) to**  **(***x1***,***y1***). Filtering only implies setting the peak number to -1.**

- **-no\_fi** \| **--pass** *x0 y0 x1 y1*

  filters out all data, except those from (*x0*,*y0*) to  (*x1*,*y1*). This option is the opposite of **-fi**. Filtering  only implies setting the peak number to -1.

- **-fy**

  Returns fast running y-positions of data that are originally written with fast  running x-positions. All other variables (particle displacements, snr, peak#) are at the new positions, too. Identic to **fasty**.

- **-h** \| **--help**

  On-line help.

- **-p** \| **--print**

  Prints parameters, command line options and input and output filenames to stdout. The output is identic of *filename***.par**, in case **-f** is  used.

- **-r**

  Rotates the data over 90 degrees. Identic to **rot90**.

- **--rev**

  Reverts array indexes of output data for getting reversed order.  This results into high to low running positions or vice versa. Identic to  **revert**.

- **-v** \| **--version**

  Print version information on standard output, then exits successfully.

- **-x**

  Flips the data in x-direction (vertical axis). Identic to **flipx**.

- **-y**

  Flips the data in y-direction (horizontal axis). Identic to **flipy**.

- *filename*

  Input PIV data file. Overrides stdin and stdout. Output will be written to *filename***.ma.piv**. The parameters will be written or appended to *filename***.par** and may be used for future use by including them in *./gpivrc*.

- gpivtools

  ## SEE ALSO

## AUTHOR

Gerber Van der Graaf