How to use the command ppmtoicr (with examples)

The ppmtoicr command is used to convert PPM (Portable Pixmap) image files to NCSA ICR (iCensus) format. This command is part of the Netpbm package and can be used for various purposes, such as image processing, data analysis, and visualization.

Use case 1: Convert a PPM image to an ICR file

Code:

ppmtoicr path/to/file.ppm > path/to/file.icr

Motivation:

The motivation behind using this example is to convert a PPM image file to the NCSA ICR format, which can be useful for various applications that require working with ICR files.

Explanation:

• ppmtoicr: The command to convert a PPM image to ICR format.
• path/to/file.ppm: The path to the input PPM image file that needs to be converted.
• path/to/file.icr: The path to the output ICR file where the converted image will be saved.

Example output:

The PPM image file at path/to/file.ppm will be converted to the NCSA ICR format and saved at path/to/file.icr.

Use case 2: Display the output in name

Code:

ppmtoicr -windowname name path/to/file.ppm > path/to/file.icr

Motivation:

The motivation behind using this example is to display the converted image with a specific window name, which can be useful when working with multiple images or processes.

Explanation:

• ppmtoicr: The command to convert a PPM image to ICR format.
• -windowname name: An optional argument to specify the window name for the output image. Replace name with the desired window name.
• path/to/file.ppm: The path to the input PPM image file that needs to be converted.
• path/to/file.icr: The path to the output ICR file where the converted image will be saved.

Example output:

The PPM image file at path/to/file.ppm will be converted to the NCSA ICR format and saved at path/to/file.icr. The converted image will be displayed with the specified window name.

Use case 3: Expand the image by the specified factor

Code:

ppmtoicr -expand factor path/to/file.ppm > path/to/file.icr

Motivation:

The motivation behind using this example is to expand the size of the converted image by a specific factor, which can be useful for zooming in or manipulating the image.

Explanation:

• ppmtoicr: The command to convert a PPM image to ICR format.
• -expand factor: An optional argument to specify the expansion factor for the image. Replace factor with the desired amount of expansion.
• path/to/file.ppm: The path to the input PPM image file that needs to be converted.
• path/to/file.icr: The path to the output ICR file where the converted image will be saved.

Example output:

The PPM image file at path/to/file.ppm will be converted to the NCSA ICR format and saved at path/to/file.icr. The size of the converted image will be expanded by the specified factor.

Use case 4: Display the output on the screen with the specified number

Code:

ppmtoicr -display number path/to/file.ppm > path/to/file.icr

Motivation:

The motivation behind using this example is to display the converted image on the screen with a specific number, which can be useful for organizing or referencing multiple displayed images.

Explanation:

• ppmtoicr: The command to convert a PPM image to ICR format.
• -display number: An optional argument to specify the display number for the output image. Replace number with the desired display number.
• path/to/file.ppm: The path to the input PPM image file that needs to be converted.
• path/to/file.icr: The path to the output ICR file where the converted image will be saved.

Example output:

The PPM image file at path/to/file.ppm will be converted to the NCSA ICR format and saved at path/to/file.icr. The converted image will be displayed on the screen with the specified number.