I have a large file with fields delimited by '|', and I want to run some analysis on it. What I want to do is count how many times each field is populated, or list the frequency of population for each field.
I am in a Sun OS environment.
Thanks,
- CB (3 Replies)
Hi. I'm working with two BASH shells in order to perform two tasks. For simplicity, suppose that at Shell #1 I'm executing this program:
sleep 100
whose PID is 263. Meanwhile Shell #2 is waiting for its termination to follow with a second one.
I tried with:
wait 263
# Script for second... (4 Replies)
I have a data file that has 6 columns and I have sorted the 3rd column so that all rows are sorted according to the 3rd column (from lowest to highest number). An example is shown below:
7563 273 1 -15.81100000 25.37250000 -19.27320000
8149 294 1 -17.90540000 ... (3 Replies)
Hi guys,
Those who work with Background Oriented Schlieren (BOS) might wonder how to create image pairs suitable for a PIV image processing software.
Here is the code :
#!/bin/bash
# This is a program to read *.jpg files and save them in pairs for postprocessing
nfiles=`ls -1 bild*... (0 Replies)
I need to write a shell script "cmn" that, given an integer k, print the k most common words in descending order of frequency.
Example Usage:
user@ubuntu:/$ cmn 4 < example.txt :b: (3 Replies)
Hi, I have tab-deliminated data similar to the following:
dot is-big 2
dot is-round 3
dot is-gray 4
cat is-big 3
hot in-summer 5
I want to count the frequency of each individual "unique" value in the 1st column. Thus, the desired output would be as follows:
dot 3
cat 1
hot 1
is... (5 Replies)
Dear all,
I have an AWK script which provides frequency of words. However I am interested in getting the frequency of chunked data. This means that I have already produced valid chunks of running text, with each chunk on a line. What I need is a script to count the frequencies of each string. A... (4 Replies)
Discussion started by: gimley
4 Replies
LEARN ABOUT ULTRIX
ppmtosixel
ppmtosixel(1) General Commands Manual ppmtosixel(1)NAME
ppmtosixel - convert a portable pixmap into DEC sixel format
SYNOPSIS
ppmtosixel [-raw] [-margin] [ppmfile]
DESCRIPTION
Reads a portable pixmap as input. Produces sixel commands (SIX) as output. The output is formatted for color printing, e.g. for a DEC
LJ250 color inkjet printer.
If RGB values from the PPM file do not have maxval=100, the RGB values are rescaled. A printer control header and a color assignment table
begin the SIX file. Image data is written in a compressed format by default. A printer control footer ends the image file.
OPTIONS -raw If specified, each pixel will be explicitly described in the image file. If -raw is not specified, output will default to com-
pressed format in which identical adjacent pixels are replaced by "repeat pixel" commands. A raw file is often an order of magni-
tude larger than a compressed file and prints much slower.
-margin
If -margin is not specified, the image will be start at the left margin (of the window, paper, or whatever). If -margin is speci-
fied, a 1.5 inch left margin will offset the image.
PRINTING
Generally, sixel files must reach the printer unfiltered. Use the lpr -x option or cat filename > /dev/tty0?.
BUGS
Upon rescaling, truncation of the least significant bits of RGB values may result in poor color conversion. If the original PPM maxval was
greater than 100, rescaling also reduces the image depth. While the actual RGB values from the ppm file are more or less retained, the
color palette of the LJ250 may not match the colors on your screen. This seems to be a printer limitation.
SEE ALSO ppm(5)AUTHOR
Copyright (C) 1991 by Rick Vinci.
26 April 1991 ppmtosixel(1)