---
name: "pnminterp-gen"
section: "1"
platform: "linux"
package: "netpbm"
version: "2:10.0-15.4"
release: "Debian 11 (Bullseye)"
platforms: ["linux"]
url: "https://new.carta.tech/pamstretch-gen"
---

# pnminterp-gen(1)

use pamstretch and pnmscale to scale by non-integer values

Part of [pamstretch-gen(1)](/pamstretch-gen/1.md).

## NAME

pamstretch-gen - use pamstretch and pnmscale to scale by non-integer values

## SYNOPSIS

**pamstretch-gen** *N* \[*pnmfile*\]

## DESCRIPTION

**pamstretch-gen** is a program which uses [**pamstretch**(1)](/pamstretch/1.md), [**pnmfile**(1)](/pnmfile/1.md), and [**pnmscale**(1)](/pnmscale/1.md) to smoothly scale up a PNM file by any ratio; it's like a more general version of pamstretch (hence the name). But other than the \`any ratio' bit, it's much the same as pamstretch. :-)

## BUGS

Uses awk just to make some simple floating-point calculations, which is probably overkill. But using dc makes my head hurt.

## SEE ALSO

[**pamstretch**(1)](/pamstretch/1.md), [**pnmscale**(1)](/pnmscale/1.md)

## AUTHOR

Russell Marks (russell.marks@ntlworld.com).