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ppmtoicr - Online in the Cloud

Run ppmtoicr in OnWorks free hosting provider over Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator

This is the command ppmtoicr that can be run in the OnWorks free hosting provider using one of our multiple free online workstations such as Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator

PROGRAM:

NAME


ppmtoicr - convert a portable pixmap into NCSA ICR format

SYNOPSIS


ppmtoicr [-windowname name] [-expand expand] [-display display] [-rle] [ppmfile]

DESCRIPTION


Reads a portable pixmap file as input. Produces an NCSA Telnet Interactive Color Raster
graphic file as output. If ppmfile is not supplied, ppmtoicr will read from standard
input.

Interactive Color Raster (ICR) is a protocol for displaying raster graphics on workstation
screens. The protocol is implemented in NCSA Telnet for the Macintosh version 2.3. The
ICR protocol shares characteristics of the Tektronix graphics terminal emulation protocol.
For example, escape sequences are used to control the display.

ppmtoicr will output the appropriate sequences to create a window of the dimensions of the
input pixmap, create a colormap of up to 256 colors on the display, then load the picture
data into the window.

Note that there is no icrtoppm tool - this transformation is one way.

OPTIONS


-windownamename
Output will be displayed in name (Default is to use ppmfile or "untitled" if
standard input is read.)

-expandexpand Output will be expanded on display by factor expand (For example, a value of
2 will cause four pixels to be displayed for every input pixel.)

-displaydisplay
Output will be displayed on screen numbered display

-rle Use run-length encoded format for display. (This will nearly always result
in a quicker display, but may skew the colormap.)

EXAMPLES


To display a ppm file using the protocol:
ppmtoicr ppmfile
This will create a window named ppmfile on the display with the correct dimensions for
ppmfile, create and download a colormap of up to 256 colors, and download the picture into
the window. The same effect may be achieved by the following sequence:
ppmtoicr ppmfile > filename
cat filename
To display a GIF file using the protocol in a window titled after the input file, zoom the
displayed image by a factor of 2, and run-length encode the data:
giftopnm giffile | ppmtoicr -w giffile -r -e 2

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