I have a matrix , how do I compare all the elements of a column , lets say I want to check if the columns contain the alphabets "S","H","A","R","A","T".
and not "X"s.
Lets say matrix looks something like this ..
SSSXSH
HHXXHA
AAXXAT
RRRXRS
AAXTAR
TTTTTA
I can hard code it where... (4 Replies)
Yet another question. I want to make something like this:
if ||&&
then
...
fi
but that apparently is not right. I want either the first condition to be true OR the second AND third conditions to be true for the "then" to be processed. How can I do this? (1 Reply)
Dears,
Can anyone advise how to log successful conditionals (unix commands) from any ksh script?
For example, the code is as follows:
if <command>
then
Block1 of statements
else
Block2 of statements
fi
What needed exactly is to log "Block1 of statements" if its conditon is met.... (4 Replies)
Hi was wonderring about the syntax for the following peice of code:
while ] ; do
This is apparently incorrect. I want the loop to continue WHILE $life is not equal to zero or $mask is not equal to $word. Should ONE of these conditions fail to be met, loop should break out. Any ideas? ... (8 Replies)
Hi there, I have a table that stores multiple records for many different servers, each of which is timestamped ... I wanted to write a query that would enable me to only output the "latest" record (based on timestamp) for each "unique" server. So for example my main table looks like this
... (3 Replies)
if i declare both but don't input any variables what values will the int array and file pointer array have on default, and if i want to reset any of the elements of both arrays to default, should i just set it to 0 or NULL or what? (1 Reply)
Hello, pro scripters, noob here,
I am complete noob in this and I have to write a program which:
Calculates the modulus of two numbers which the user enters with keyboard. Number interval 1-9. These two numbers that were entered and modulus which was calculated are stored in a separate file.... (1 Reply)
I need some help.
I use variables and conditionals to build with or without specic libraries. I set
USEAL ?= 1 # get value from cmd, defaults to 1
(see comment)
the conditional is:
ifeq ($(USEAL),1)
LIBS = <any libs>
else
LIBS =
endif
Its amazing that this works when invoked... (4 Replies)
Discussion started by: dodona
4 Replies
LEARN ABOUT REDHAT
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)