---
name: "plotquad"
section: "1"
platform: "linux"
package: "astrometry.net"
version: "0.97+dfsg-2"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/plotquad"
---

# plotquad(1)

Draws polygons over images.

## NAME

plotquad - Draws polygons over images.

## SYNOPSIS

**plotquad** \[*options*\] *quads*  \> output.png

## OPTIONS

- **-I** *file*

  Input image (PPM format) to plot over.

- **-p**

  Input image is PNG format, not PPM.

- **-P**

  Write PPM output instead of PNG.

- **-C** *color*

  Color to plot in (default: white): darkred, red, darkgreen, green, blue, verydarkblue, white, black, cyan, magenta, yellow, brightred, skyblue, orange, gray, darkgray

- **-b** *color*

  Draw in *color* behind each line.

- **-c**

  Also plot a circle at each vertex.

- **-W** *width*

  Width of output image.

- **-H** *height*

  Height of output image.

- **-w** *width*

  Width of lines to draw (default: 5).

- **-R**

  Read quads from stdin.

- **-o** *opacity*

  Opacity.

- **-d** *dim*

  Dimension of "quad".

- **-s** *scale*

  Scale quad coordinates before plotting.

- **-m** *file*

  Get quad from match file. OR  *x1* *y1* *x2* *y2* *x3* *y3* *x4* *y4* \[...\]

## AUTHOR

The Astrometry.net team. Principal investigators are David W. Hogg (NYU) and Dustin Lang (CMU).

## SEE ALSO

http://astrometry.net