---
name: "makepattern"
section: "1gmt"
platform: "linux"
package: "gmt"
version: "4.5.12-1"
release: "Debian 8 (Jessie)"
platforms: ["linux"]
url: "https://new.carta.tech/makepattern"
---

# makepattern(1gmt)

make GMT color pattern from b/w pattern or icon

## NAME

makepattern - make GMT color pattern from b/w pattern or icon

## SYNOPSIS

**makepattern** *1bit.ras* \| *iconfile* **-Cf***r/g/b* **-Cb***r/g/b*

## DESCRIPTION

**makepattern** reads either a Sun 1-bit rasterfile OR a Sun icon file.  It then accepts color choices for the foreground and background pixels and colorizes the pattern, writing it as a 8-bit Sun rasterfile on stdout. These patterns may then be used in **GMT** (3.1 or later) **-Gp** settings or by **psimage**.

- *1bit.ras* \| *iconfile*

  Either a 1-bit Sun rasterfile (standard format, no RLE) or a Sun icon file (as used in **GMT** 3.0).

- **-Cf**

  Sets the color for the foreground pixels (the ones) \[black\].

- **-Cb**

  Sets the color for the background pixels (the zeros) \[white\].

## WIN32 fix

Since binary redirection under WIN32 does not work, you must specify the output file with **-G***newfile.ras*.  This option is only available under WIN32.

## EXAMPLES

To create a colorized red/blue 8-bit Sun rasterfile pattern from the old 3.0-style iconpattern stored in file custom.icon, run

**makepattern** custom.icon **-Cf** red **-Cb** blue \> custom.ras

To create a green/blue 8-bit Sun rasterfile pattern from a 1-bit Sun raster called bits.ras, run

**makepattern** bits.ras **-Cf** green **-Cb** blue \> colorbits.ras

## SEE ALSO

[*GMT*(1)](/GMT/1.md), [*psimage*(1)](/psimage/1.md)