Comparing two numbers with decimal point Post: 302373663

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

how to get rid of decimal point?

Hi, I have input with decimal point ( 9.99 ) for hours variable hrs. I need to change it to seconds. Here is my code: secs=`/usr/ucb/echo $hrs*3600 |bc` But I don't want to see the decimal point. I can use awk to trim it if there is one. I am just wondering if there is better standard...

2. Shell Programming and Scripting

Insert a decimal point

Hi all. Using /bin/sh on an HPUX system. I want to place a decimal in the field 2 charactors from the right (yes, converting to currency). The field lengths are variable. Here's what I'm doing: exec < filename while read FIELD1 FIELD2 do FIELD1="echo $FIELD1 | sed 'syntax that will...

3. Shell Programming and Scripting

Comparing Decimal Numbers

Im trying to compare two numbers with decimals but its not working as expected. a=1 b=1.1 if then echo "equal" fi When I do this it says that the numbers are equal. Ultimately Im using -le and -ge in the if statements but I tested with -eq for simplicity. Any way to make this...

4. Shell Programming and Scripting

Insert decimal point for numbers

Hi In Unix, I have a file with some numbers like : 45600 12345 I want to insert a decimal point for these numbers based on user input. If the input is 2, the numbers should be changed to 456.00 123.45 If the input is 3, the numbers should be changed to 45.600 12.345 Can...

5. Shell Programming and Scripting

Comparing decimal numbers between 0 and 1

For numbers between 0 and 1 the below logic is not working. Output of above shall be "correct" but its echoing "incorrect".Kindly suggest a=.1 if then echo correct else echo incorrect fi Video tutorial on how to use code tags in The UNIX and Linux Forums.

6. Shell Programming and Scripting

awk decimal point numbers matching

Hi All, Can some one help me in identifying the significance of character "$" ,Which is playing critical role in matching decimal point numbers as below. $ echo "01#.01"|awk '{if ($0 ~ /^+(\.*)?$/) print}' $ echo "01#.01"|awk '{if ($0 ~ /^+(\.*)?/) print}' 01#.01 $ Regards, Rmkganesh.

7. Shell Programming and Scripting

ksh Arithmetic syntax error while comparing decimal numbers

Hello, I am having a problem when i execute following script on RHEL 6.4. Same script works fine on another machine where I have same version of RHEL and KSH. Below is the rpm and RHEL version. ossvm12(0)> rpm -qa | grep ksh ksh-20100621-19.el6.x86_64 ossvm12(0)> cat...

8. Shell Programming and Scripting

Moving decimal point in a series of numbers

Hi, i need to move the decimal point from a file listing some numbers like this : 49899.50 49914.55 49894.48 49939.65 49879.44 49919.57 49934.62 49944.67 49954.72

9. UNIX for Beginners Questions & Answers

Decimal numbers and letters in the same collums: round numbers

Hi! I found and then adapt the code for my pipeline... awk -F"," -vOFS="," '{printf "%0.2f %0.f\n",$2,$4}' xxx > yyy I add -F"," -vOFS="," (for input and output as csv file) and I change the columns and the number of decimal... It works but I have also some problems... here my columns ...

10. UNIX for Advanced & Expert Users

Convert a numeric to 2 decimal point value

Hi , I have a file which contains text like A|Mau|Code|12|Detail B|Mau|Code|20|Header I want to write a command using awk which will output A|Mau|Code|12.00|Detail B|Mau|Code|20.00|Header I used a command like awk -F"|" {printf "%s|%s|%s|%.2f|%s",$1,$2,$3,$4,$5}' which does the...

LEARN ABOUT REDHAT

pnmpsnr

pnmpsnr(1)						      General Commands Manual							pnmpsnr(1)

NAME

       pnmpsnr - compute the difference between two images (the PSNR)

SYNOPSIS

       pnmpsnr [pnmfile1] [pnmfile2]

DESCRIPTION

       Reads  two  PBM,  PGM, or PPM files, or PAM equivalents, as input.  Prints the peak signal-to-noise ratio (PSNR) difference between the two
       images.	This metric is typically used in image compression papers to rate the distortion between original and decoded image.

       If the inputs are PBM or PGM, pnmpsnr prints the PSNR of the luminance only.  Otherwise, it prints the separate PSNRs of the luminance, and
       chrominance (Cb and Cr) components of the colors.

       The  PSNR  of  a  given component is the ratio of the mean square difference of the component for the two images to the maximum mean square
       difference that can exist betwee any two images.  It is expressed as a decibel value.

       The mean square difference of a component for two images is the mean square difference of the component value, comparing  each  pixel  with
       the pixel in the same position of the other image.  For the purposes of this computation, components are normalized to the scale [0..1].

       The maximum mean square difference is identically 1.

       So the higher the PSNR, the closer the images are.  A luminance PSNR of 20 means the mean square difference of the luminances of the pixels
       is 100 times less than the maximum possible difference, i.e. 0.01.

SEE ALSO

       pnm(5)

								   04 March 2001							pnmpsnr(1)

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

how to get rid of decimal point?

Discussion started by: cin2000

2. Shell Programming and Scripting

Insert a decimal point

Discussion started by: lyoncc

3. Shell Programming and Scripting

Comparing Decimal Numbers

Discussion started by: Grizzly

4. Shell Programming and Scripting

Insert decimal point for numbers

Discussion started by: yoursdivu