Linux command
pnmindex 命令
文本
涉及管道、覆盖或删除，执行前请先确认路径和参数。
常用示例
Create image index
pnmindex [image1.pnm] [image2.pnm] [image3.pnm] > [index.pnm]
Specify size
pnmindex -size [100] [*.pnm] > [index.pnm]
With a title
pnmindex -title ["My Gallery"] [*.pnm] > [index.pnm]
Multiple columns
pnmindex -across [4] [*.pnm] > [index.pnm]
说明
pnmindex creates a visual index (contact sheet) from multiple PNM images. Each image is scaled to a thumbnail and arranged in a grid. Useful for creating image previews and galleries.
参数
- -size _n_
- Maximum thumbnail size in pixels. Each image is scaled to fit within an N x N box while preserving aspect ratio. Default: 100.
- -across _n_
- Number of thumbnails per row. Default: 6.
- -colors _n_
- Maximum number of colors in the output image. Default: 256.
- -title _title_
- Add a title string at the top of the image.
- -black
- Use black background with white labels instead of the default white background with black labels.
- -noquant
- Disable color quantization. By default, colors are reduced for PPM input.
- -quant
- Enable color quantization (default for PPM input).
- -quiet
- Suppress informational messages.
FAQ
What is the pnmindex command used for?
pnmindex creates a visual index (contact sheet) from multiple PNM images. Each image is scaled to a thumbnail and arranged in a grid. Useful for creating image previews and galleries.
How do I run a basic pnmindex example?
Run `pnmindex [image1.pnm] [image2.pnm] [image3.pnm] > [index.pnm]` in a terminal, then adjust file names, paths, flags, or remote targets for your system.
What does -size _n_ do in pnmindex?
Maximum thumbnail size in pixels. Each image is scaled to fit within an N x N box while preserving aspect ratio. Default: 100.